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EwULTIboard/ULTIcap evaluation system: all features of the bigger versions full set of manuals design capacity 500 pins 5Price incl. S & H, excl. VAT:

Purchase price is 100% credited when upgrading toa bigger version. Also suitable for study & hobby

)sign ideas are quickly captured using the ULTIcap schematic design Tool. ULTIcap usesTIME checks to prevent logic errors. Schematic editing is painless; simply click your start and endand ULTlcap automatically wires them for you. ULTIcap's auto snap to pin and auto junction

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li you need partial ground planes, thenwith the Dos extended board systems youcan automatically create copper polygonssimply by drawing the outline. The polygonis then filled with copper of the desired net.all correct pins are connected to thepolygon with thermal relief connectionsand user defined gaps are respectedaround all other pads and tracks.

ULTIboard's autorouter allows you tocontrol which parts of your board arautorouted, either selected nets. orcomponent, or a window of the boarthe whole board. ULTlboard's intelligentrouter uses copper sharing techniques tominimise route lengths. Automatic viaminimisation reduces the number of vias todecrease production costs. The autorouterwill handle up to 32 layers. as well assingle sided routing.

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ELECTRONICSCONTENTS

December 1994Volume 20Number 228ISSN 0268/4519

In next month's issue

Dolby surround soundQuasi analogue clockworkAudio digital -to -analogue

converterSelf -loading Integrated Code

EEPROM Type X88 C64

Debugging the 8031

Maxim voltage referencesand others for yourcontinued interest

ApologiesWe regret that owing to areprographical error page34 of the November issuewas repeated on page 35.The missing page 35 ispublished on page 107 ofthis issue. Those readerswho do not wish to buythe December issue canobtain page 35 on requestfrom our editorial office InDorchester.We also regret that in cer-tain issues incorrect gluewas used to fix the sub-scription leaflet Readerswith a damaged contentspage can obtain a newone on request from oureditorial office InDorchester.

Front coverThe photo shows the circuitof a 1 -to -3 -phase converter

and some motors whose speed

can be controlled with it. The

unit, described on pp. 26-30,

converts the single-phasemains supply to a 3 -phase

voltage which can control small

three-phase motors rated atup to 725 W, irrespective ofwhether these are synchronous

or induction types.

Copyright ©1994 Elektuur BV

A B CCONSUMER PRESS

To all our readers: thank you for your continued support during thepast year and may peace be with you in the coming year.

58 CUMULATIVE INDEX 1994

108 PRODUCT OVERVIEW

APPLICATION NOTE54 TLC247xx amplifier

AUDIO & HI-FI44 Switched tone control48 In -car audio amplifier - Part 3 (final)91 Low -frequency tone control103 Stand-alone S/PDIF copybit eliminator104 Loudness control105 Fast switch -off for power amplifier

COMPONENTS9 ispStarter kit from Lattice16 PSD3xx chips32 Gyrator33 4th order Butterworth filters45 Relay controlled potentiometer46 8th order Bessel filter91 General-purpose filters101 50 Hz band -stop filter102 Programmable divider102 Improved optoisolator104 Comparator with unilateral hysteresis106 Composite operational amplifiers

COMPUTERS & MICROPROCESSORS83 PC interface for Casio organizer93 SIP-to-SIM adaptor board96 Discrete A -D converter for 805199 Centronics input

GENERAL INTEREST26 1 -to -3 -phase converter32 Chaos34 Auto start for older fax machines34 NPN/PNP selector38 Proximity detector44 Fuse protector45 Motor speed controller46 Movement alarm47 Battery adaptor for portable CD players47 Magnetic -field detector

63 Pump for operational amplifiers63 Electric -field detector74 The Digital Solution80 Temperature protection for resistive

high -power loads82 I2C real-time clock88 Speed control for d.c. motors89 Ionisation meter90 Reversing indicator92 Soft start for motors94 Electret microphone for telephone

mouthpiece95 Presentation running lights96 H -field sensor98 Fax -PC interconnection101 Power -on delay

POWER SUPPLIES & BATTERY CHARGERS20 RF immune power supply33 Step-up NiCd battery charger62 Reflex -charging adaptor66 Electronic know-how: Batteries81 5 V regulator on 45 V88 Soft start regulator

RADIO, TELEVISON & COMMUNICATIONS35 30 m QRP CW transmitter83 Switching voltage for polarizer90 Dual-purpose LED display

TEST & MEASUREMENT5 1000 Hz sine wave generator62 Single -diode full -wave rectification92 Spike detector98 Differential probe100 Current probe

MISCELLANEOUS INFORMATION84 Components Select110 Readers' Services111 Order forms112 Terms of business113 Switchboard113 Books from Elektor Electronics114 Buyers' guide114 Index of advertisers

Elektor Electronics is published monthly, except in August, by Elektor Electronics (Publishing), P.O. Box 1414, Dorchester, Dorset DT2 SYH, England. The magazine isavailable from newsagents, bookshops and electronics retail outlets, or on subscription at an annual (1994/95) post paid price of £28.00 in the United Kingdom; airspeeded:£35.00 in Europe; £4400 in Africa, the Middle East and South America; £4600 in Australia, New Zealand and the Far East; and $59.00 in the USA and Canada.Second Class Postage paid at Rahway N.J. Postmaster: Please send address corrections to Elektor Electronics, c/o Mercury Airfreight International Ltd Inc., 2323 RandolphAvenue, Avenel, New Jersey, N.J. 07001.

ELEKTOR ELECTRONICS DECEMBER 1994

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ELEKTOR ELECTRONICS DECEMBER 1994

1000 -HZ SINE WAVE OSCILLATORLI

Oscillators exist in a bewildering number of types and variants, each with itsown, specific, features. A type known for its near -perfect sine wave output is the

Wien bridge oscillator. This well -tried design is revamped here with a specialtrick to stabilize the output signal level.

Design by T. Giesberts

ONE of the areas of electronicswhich is known for its tremendous

variety is oscillator design. You namean application and there is an oscilla-tor design to fill the bill. There existRC, LC and crystal oscillators, highand low frequency oscillators and highand low power types. The output sig-nal is either a sine wave, a rectangularwave, or a sawtooth. Furthermore,many oscillators have output level andfrequency controls. Either it exists, orit can be made.

If you want to do elementary testson audio equipment (like faultfindingand repair), you probably require asimple signal source capable of sup-plying a 'clean' sine wave. The ulti-mate, of course, is to have an oscillatorwith adjustable frequency, althoughone with a fixed frequency, say, 1 kHz,is also very useful. The classic Wienbridge type oscillator is just the thing

for this application. The design, al-though simple, is well -tried, and en-ables a good quality sine wavegenerator to be built.

The Wien bridge consists of an RCseries network and an RC parallel net-work. The two capacitors have thesame value, and the same goes for thetwo resistors. At the central frequency,the phase shift is nought because thenthe two networks introduce an equalphase shift with opposing signs. Theattenuation is then three times.Consequently, the circuit can be madeto oscillate by adding a simple ampli-fier with a gain of x3, as illustrated inFig. 1.

Filament controlRecapping the above, a sine wave os-cillator based on the Wien bridge prin-ciple has few ingredients: two RC

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SPECIFICATIONS

Frequency:Max. output voltage:Distortion (THD+noise):Supply voltage:Current consumption

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6 TEST AND MEASUREMENT

because that, as is easy to under-stand, would cause 'damage beyondrepair' to the beautiful waveshape youare after.

The first of the above points can besolved by using a good quality opampin the amplifier. Since a wide range ofexcellent opamps is available thesedays, that need not be a problem. Thesecond point, the control system,turns out to be unexpectedly simple asit can be realised by an ordinary lamp.

The circuit diagram of the oscillatoris shown in Fig. 2. Arguably, the re-semblance to Fig. 1 is striking. TheWien bridge proper consists of RI, R2,C1 and C2, and is arranged for a fre-quency of 1 kHz. Capacitors C1 and C2are Siemens 'MKT' (metal theraphte-late) types which you will have tomatch for a tolerance of 1% or better tomake sure that the circuit oscillates. Ifyou want an exact output frequency of1 kHz, these capacitors should have a(theoretical) value of 119.67 nF.

The amplifier is based on an opamptype OPA627. The required gain ofabout three times is defined by feed-back network P1 -R3 -R4 -Lai. In thisnetwork, the lamp acts as a positivetemperature coefficient (PTC) resis-tance. The PTC is provided by thelamp's filament, whose resistance istemperature dependent. When cold,the filament has a resistance of about25 Q, which doubles (roughly) whenthe normal operating temperature isreached. This characteristic is ex-ploited here by incorporating the lampin the feedback network. When thelamp is 'cold', the gain of IC1 is deter-mined mainly by the ratio R3/R4. Asthe output voltage rises, however, thecurrent through the feedback networkrises also, as does the resistance of thelamp. Consequently, the ratio of thenetwork changes, causing the feed-back to increase and the gain of ICI todecrease. As a result, the output volt-age drops, and the current through thelamp drops also, causing the gain ofICI to rise again. After a short warmingup period, the oscillator output levelwill settle at a stable value.

The electronic counterpart of thelamp in the lower branch of the feed-back network is a preset, P1, in theupper branch. This preset allows thebridge to be 'balanced' accurately. Theoperation of the output level controlsystem is further stabilized by an addi-tional current source, R5, for the lamp.This resistor may have to be changed alittle to match the type of lamp used.In the prototype of the oscillator, goodresults were achieved with a value of3.3 ka Should you find that the out-put voltage still rises a little after a fewminutes, the value of R5 must be de-creased. Likewise, a slowly decreasingoutput voltage calls for a somewhat

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Fig. 2. Modern electronics with a touch of nostalgia: a small lamp is incorporated in the os-cillator's feedback network. The PTC characteristic of the lamp filament is exploited to obtainan effective automatic gain control.

Elektor GB2FFT AMP1(dBr) vs FREQ(Hz) 13 SEP 94 08:52:09

0.0

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940069 13

Fig. 3. Spectrum analyser screendump. The THD+noise figure of the oscillator is extremelylow, approaching the noise floor of the instrument.

ELEKTOR ELECTRONICS DECEMBER 1994

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KITS AND COMPONENTS FOR ELEKTOR ELECTRONICS PROJECTS

December 1994ispLSI Starter kitOriginal Lattice kit 199.00

P&P 15.00

In -car audio amplifier (3)Many parts can be supplied. See ourmini -catalogue for prices and availability

November 1994Solid-state diskKit, incl PCB, EPROM, excl. RAMS ..215.00

P&P 15.00611024 RAM (each) 39.00

Simple capacitance meterKit, incl. DVM module and case 169.00

P&P 15.00LM358LP 2.5 3.75BAT82 0.85Polypropylene Cs 2.45 eachTLC279CP 6.75TLC274CP 2.85DVM module 39.50

October 1994TV line monitorLM1881 13.2574HCT221 1.75HD11070 5.00PCB mount RCA socket 2.45Digitast presskey w. cap 3.50

In -car audio amplifier (11Many parts can be supplied. See ourmini -catalogue for prices and availability

Se tember 1994Medium -fidelity power amplifier0.220 5W low -inductance 4.95Transistor set T1 -T7 19.50SK85/75 heatsink 29.75Ceramic washer TOPS 1.95LM1037N 14.75NE5532N 4.50T709G gold-plated socket 2.35V23042 -A2005-6101 relay 12.50

SK129/25.4 heatsink 5.35 B80C1500 4.0010,0008F 50V radial cap. 27.50 AD830AN 17.50Other parts can be supplied, AD844AN 17.50please enquire.

Anemometer and flow meterMPX1ODP 49.751kS2 multiturn cermet 2.755142 multiturn cermet 2.752500 multiturn cermet 2.75BAT85 0.854 -way PCB socket 1.55

Jul /Au ust 199480C451 controller boardSC80C451CCA68 39.5074HCT573 2.75MAX232N 5.9568 -pin PLCC socket 4.752CTL2 push-button 2.4512MHz crystal 4.10

General-purpose IR vol controlAlps 20KAX2 motor -driven stereo pot,20k.c2 log. 85.00SFH506-38 11.50SAA3049 16.75BC639/640 0.954MHz crystal 4.10BS170 1.55

June 1994800535 extension boardKit incl. PCB and disk, excl. LCD 165.00

P&P 12.50 (Europe)P&P 20.00 (outside Europe)

SAA3049 16.75PCD/F8584 18.50PCF8583 9.75

Fuel consumption meterKMZ1OB 9.85

Ma 1994Differential probe for oscilloscopes4.7pF / 400V 0.90120pF trimmer 2.75

PCB terminal blocks 1.25 eachBoole E440BB case 14.50

Mains signalling system - 2Transmitter220pF polystyrene 2.45BS170 1.533900 choke 0.8580C31BH-16 21.50CNY65 4.50ULN2803 1.95PCB terminal blocks 1.25 each9 -way sub -D socket, PCB 3.85Case Boole EG2050L 24.50Receiver parts also available!

Aril 199468HC11 controller boardMC68HC11A1 44.001L207 (SMA) 3.8574HCT4066 (SMA) 1.55PLCC 52 socket 4.75Boxheaders 1.80 eachDisk (3.5 in. MSDOS) w. 68HC11utility programs 27.50

Februar 1994800535 Single -board computerKit incl. EM0N52 monitor EPROM,800535 datasheet and 800535assembler course on disk

(described in EE March 1994).Special price' 225.00

P&P 12.50 (Europe)P&P 20.00 (outside Europe)

MAX232N 5.95SAB80C535L 32.5062256-10L 13.7512MHz cystal 4.1068 -pin PLCC socket 4.7574HC573 3.7574HC00 0.95

Februar 1994RDS decoder w. clock/alarmSAA6579T 29.75100nF SMA 1.80100pH choke 0.8568HCO5EOFN 49.004.000 MI-lz crystal 4.104.332 MHz crystal 15.00V23127 -A2 -A101 or ect 9.5012V buzzer 3.7568 -way PLCC socket 4.75Digitast press -key incl. cap 3.50LM016A 2x16 char. LCD 59.00LC850 case 29.50

P&P 10.00 (Europe)P&P 17.50 (outside Europe)

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- Faxed enquiries may be answered by moll Please always fox your complete addressEnclose one IRC with all correspondence Prices are in Dutch guilders ItilLG), sub/setchange without prior notice, and exclusive of postage and packing. No currencies other thanNLG (Netherlands Guilders) acceptedPrivate customers in EEC countries add BTW (sales tax) at 17 5%, then P&P. Companies andinstitutions: please state your Intrastat VAT number Quantity discounts on request.Goods sent by airmail, recorded delivery to non-CEPT destinations. No C.O.D. ordersP&P components: NLG 12.50 (outside Europe); NLG 8 50 (Europe) P&P kits: as advised.

VISA - MASTER - ACCESS - EUROCARD orders welcome

higher value of R5. The optimum valuecan be found by trial and error only.

Good specificationsThe use of a lamp as a PTC device de-mands that the resistors around IC Ihave relatively low values. Obviously, areasonable current has to flow throughthe lamp to make it act as a PTC de-vice, and that can only be achievedwith low value resistors.

An advantage of low -value resistorsis that their noise contribution is low.On the down side, an opamp has to beused which is capable of driving a loadof 600 Q (minimum) at a symmetricalsupply voltage of ±15 V. That is not aproblem for the OPA627 opamp usedhere, which has FET inputs, a lownoise factor (5.6 nV/ \/1-1z at 1 kHz), alow input offset (max. 100 pV) and avery low distortion. The latter specifi-cation is verified by the THD+noisecharacteristic shown in Fig. 3, pro-duced by our laboratory spectrumanalyser. The measurement was madeat an oscillator output voltage of8 Vr,, and a bandwidth of 22 Hz to22 kHz. The actual THD consists al-

most entirely of the second and thirdharmonics, which together tot up to aremarkably low 0.00014%. The totalTHD+noise specification remainsbelow 0.0003%, which is not bad forsuch a simple circuit.

Unfortunately, the OPA627 is afairly costly device. If you can live witha slightly higher distortion, theOPA627 may be replaced by the (pincompatible) NE5534.

Construction andadjustmentThe circuit is so simple that a printed -circuit board is probably not neces-sary. The introductory photographillustrates that the sine wave oscillatoris fairly simple to build on a piece ofveroboard. Since the current con-sumption of the circuit is a modest10 mA or so, a small and simple sym-metrical supply may be used. Thesmallest available mains transformerwith a 2x15 -V output, a bridge rectifierand two three -pin voltage regulatorstype 78L15 and 79L15 are perfect forthe present application.

Take your time to adjust P. In prac-

tice, good results were obtained by ad-justing the preset for the highest pos-sible output level. That setting shouldalso produce the lowest distortion,while it prevents the output voltagefrom rising to unexpected, and unde-sirably high, levels after the controlsystem has settled.

(940069)

ELEKTOR ELECTRONICS DECEMBER 1994

8

Low cost data acquisition for IBM PCs & compatiblesEasy to use data acquisition products that allow your PC to be used as a range of useful test and measurement instruments,or as an advanced data logger. Installed in seconds they simply plug into the parallel port (except the ADC -16 which connectsto the serial port). They require no power supply and take up no expansion slots. Each comes with a comprehensive manual.Software drivers are included for users who wish to write their own software. Software supplied on 3.5" disk.

PicoScope

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`Virtual instrument' software. Storagescope with trigger, timebase, rulersand offset. Real time spectrumanalysis with min/max frequency andsignal averaging. Multiple meters onscreen (digital and bargraph). Printerand file handling support.

Advanced data logging softwarepackage. Collect, store, display andprint data from 1 sample per ms to 1per day. Record average, min/max orscaled values (linear, equation, tablelook -up). Report types: monitor (withmin/max alarms), y -t graphs, x -ygraphs, tabulation

PricesADC -10 with PicoScope £49ADC -11 with PicoScope £85ADC -12 with PicoScope £85ADC -16 with PicoLog £115

V/S4

The ADC -10/11/12 are avail-able with both Picoscope andPicoLog for an additional £10.Existing ADC -10/11/12 userscan add PicoLog for £25.

Single channel of analog input8 bit resolution 22kHz sampling (ADC -10)12 bit resolution 18kHz sampling (ADC -12)(sampling speed based on 33MHz/386PC)0-5V input rangeBNC input allows use of scope probes

ADC -10/12

N EW ,42;4e /00 Virtual InstrumentDual Channel 12 -bit resolutionThe ADC 100 offers both a high samplingrate (100kHz) and a high resolution. It isideal as a general purpose test instrumenteither in the lab or in the field. A flexible inputrange (±200mV to ±20V) allows the unit toconnect directly to a wide variety of signals.

Digital Storage Scope Chart Recorder Spectrum Analyser Data Logger Frequency Meter VoltmeterADC -100 with PicoScope £199ADC -100 with PicoScope & PicoLog £209ADC -100

Pico Technology Ltd. Broadway House, 149-151 St Neots Road, Hardwick, Cambridge CB3 7QJ, UK r

TEL: 0954-211716 FAX: 0954-211880

Produced and published by ELEKTOR Subscriptions: Overseas editions NETHERLANDSELECTRONICS (Publishing) World Wide Subsci iption Service Ltd. FRANCE Elektuur BV

Unit 4, Gibbs Reed Farm Elektor sad Peter Treckpoel so aat 2-4Editor Len Seymour Pashley Road Les Trois Tilleuls 6191 VK BEEKTechnical Editor J. Bulling TICEHURST TN5 7HE B P 59, 59850 NIEPPE Editor P H M Baggen

Telephone (01580)200657 (National) Editor. GC P RaedersdorfEditorial & Administrative Offices. or +44 1580 200 657 (International) GERMANY POLANDPO Box 1414 Fax (01580) 200616 (National) Elektor Verlag GmbH Elektoi ElektromkDORCHESTER DT2 8YH or +44 1580 200 616 (International) Su4,terfeld Strage 25 02-777 Warszawa 130England 5100 AACHEN Skrytka Pocztowa 271Telephone (01305)250995 (National )or i 41 1305 250 995 (Into notional )

Head OfficeP 0, Box 75

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Fax (01305) 250 996 (National) 6190 AB BEEK GREECE PORTUGALor +44 1305 250 996 (International ) The Netherlands Elektor EPE Ferreira & Bento Lda

Telephone +31 46 38 94 44 Kariskaki 14 R D Estefani, 32- I °U.K. Advertising Office Telex 56617 (elekt n1) 16673 Voula--ATHENA 1000 LISBOA3 Crescent Terrace Fax: +31 46 37 01 61 Editor E Xanthoulis Editor: F Fen eu a de AlmeidaCHELTENHAM GL50 3PE Director. M.M J. LandmanTelephone (01242) 510 769 Editor-in-Chief/Publisher. INDIA SPAINFax' (01242) 226626 P.E L Kei semakers Elektor Electronics PVT Ltd Resistor Electronica Aplicada

Commercial Manager Chhotani Building Calle Maudes 15 Entlo CInternational Advertising Office: K van Noordenne 52C, Proctor Road, Grant Road (E) 28003 MADRIDElektuur BV BOMBAY 400 007 Editor: Agustin Gonzales BueltaP 0 Box 75 Distribution Editor C R Chandarana6190 AB BEEK SEYMOUR SWEDENThe Nethei lands 1270 London Road ISRAEL Electronic Press ABTelephone +31 46 38 94 44 LONDON SWI6 4DH Elektorcal Box 5505Fax +31 46 37 01 61 PO Box 41096 14105 HUDDINGE

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ELEKTOR ELECTRONICS DECEMBER 1994

DATA ACQUISITION WITH THE PCOSCILLOSCOPE LIUE CHOP Page 0.00

6.00 U 46.6 V

4ACu.0AC4,u0

2.00 I 4.0 psec 33.3

0.0010,0 psec

26.620.0 nsec

-2.00 50,0 nsec 20.0

-4.000,1 nsec0.2 nsec

13.3

-6.00 0.5 nsec 6.66

-8.001.0 nsec2.0 nsec

0.00

-10.0 5,0 nsec -6.66).00(psec) 12 00 10,0 nsec

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50.0 neeFREEZE ONE SHOT MODE CH1 SETCH2 S

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LOW COST: HANDYPROBEConnect the HANDYPROBE to the parallel printer portof the PC and start the software. Measuring can becarried out at once. The HANDYPROBE does not needan external power supply. Some technical parameters:0 5-400 V softwareselect input range;one input channel;8 bits resolution(overall accuracy 2%);A complete softwareprogram consisting ofa digitalstorage oscilloscope,spectrum analyzer,voltmeter and atransient recorderis provided.The HANDYPROBE iseminently suitable forservicing andeducational purposes.

£ 99

MULTIFUNCTIONAL: TP5008The TP5008 is an interface cardthat provides an analogueoutput in addition to two inputchannels. This output incombination with the twoinputs may be used for thesetting up of a completecontrol loop The outputmay also be used as afunction generator.The TP5008 has aresolution of 8 bitsand a sampling rateof 200,000 samples/sec (200 kHz) The input range may be set to 0.5-20 Vfull-scale deflection. The output range covers 1.25-2.5 V.The TP5008 is fitted with BNC connectors and isdelivered complete with a user manual and softwareSeparately available are 1 1-1 10 probesand 1 100 oscilloscope probes £ 197

TiePie engineering manufactures a completerange of computer -controlled measuring instrumentsConnecting these units to a PC (MS DOS 3 0 or higher)results in a number of compre-hensive test instruments - oscilloscope;

- voltmeter;- spectrum analyzer;- frequency meter;- transient recorder.

All measured data can be storedon disk or run off for documentation Because of themany trigger possibilities, a variety of signals can bemeasured, while the powerful software enables amultitude of measurements to be carried out in astraightforward manner Application areas includeservice, medical research, automatic test systems,research and development, and education

BEST PERFORMANCE: HANDYSCOPEThe HANDYSCOPE is connected to the parallel printerport This makes it possible to carry out measurementswith a laptop or notebook PC Because of its highresolution (12 bits), the HANDYSCOPE is a very accurateinstrument The measuring rate is 100,000 samples/secEither of the two channels can be set independentlyover a range of 0 5-20 V (with a 1 10 probe up to 200 V)The advanced software enables many measurements tobe carried out Two probes (switchable 1 1-1 10) areprovided The HANDYSCOPE is constructed as a smalltable model with two BNC connectorsThe length ofthe cablelinking thePC and theHANDYSCOPE 1jis 1 8 m,which can beextendedto 3 8 m £399

VERY HIGH SPEED: TP208The TP208 is an interface cardwith a measuring speed of2x20 Megasamples/sec(8 bits) Phenomena shorterthan one millionth of asecond can still bemeasured wellThe completely digitizedtriggering ensures verystable triggering withmany triggerpossibilitiesThe TP208 has aninput range of5 mV/div to 20 V/div in 12 steps and an auto calibrationfunction Since both channels may be sampledsimultaneously, phase differences can be measuredvery accurately Even single phenomena can bemeasured since each channel has a32 KByte memory Comprehensivesoftware is provided

Interested? Then write or fax for a FREE demo diskette to

INSTRUTEK (UK)28 Stephenson RoadIndustrial EstateSt Ives, Cambs PE17 4WJEngland

f

£ 595(All prices are exclusive of VAT and P&P)

Telephone (0480)460028Fax (0480) 460 340

10

ispSTARTER KIT FROM LATTICERecent developments in electronics allow logic components to be programmed`in -circuit'. A most interesting spin-off of this trend is that it is now possible, for

the first time, to design your own logic parts as one -offs for small-scaleapplications.

By our editorial staff.Source: Lattice Semiconductor Corporation.

LIKE so many electronic compo-nents, those that fall into the 'pro-

grammable logic' category haveadvantages as well as disadvantages.The advantage is that users of specialand 'made to measure' componentscan profit from the law of productionvolume. Because of the high produc-tion numbers these parts remain af-fordable even in small quantitities. Onthe down side, any type of programma-ble logic invariably seems to be tied upwith special programming systemsthat essentially turn a 'blank' deviceinto one tailored to the application.Apart from special hardware, program-ming also requires dedicated software.

The ispLSI series from Lattice Inc.heralds a new generation of logic com-ponents which do not have the tradi-tional drawbacks of programable logic.The great thing about ispLSI is that itoffers you all the advantages of pro-gramable logic without having to pur-chase costly programming equipment.In the case of ispLSI components, a

ispStarter Kit ContentsSoftwarepD1016

ispGAL

isPGDS

ispCODE

pDS software (pLSI/ispLSIdevelopment

system) forispLS11016download softwarecompiler and downloadsoftwareANSI -C compiler sourceprogramming software

DatasheetsispLS11016ispGAL22V10IspGDS22/18/14

Samples1spLS11016-60LJispGAL22v10B-15LJ1spGDS14-7

HardwareispDownload

cable

simple cable and some hardware fittedinto a 25 -pin sub -D plug are used tolink an MS-DOS PC to a special con-nector on the application board. Allsignals needed to program the ispLSIdevice are conveyed via this link. Noprogrammer, no special voltages.

This article describes the hardwareand software which are needed to getgoing with ispLSI (In -SystemProgrammable Large Scale Integration)logic, and in particular the ispStarterKit marketed by Lattice. A simpleispLSI programmer is described in aanother article in this issue. That arti-cle also provides a general backgroundto the exciting ispLSI technology.

Get started with ispLSIFigure 1 shows the circuit diagram of asmall development system based on anispLSI1016, IC1. The special connectorwhich is needed to program the IC ishooked to header K1. All signals on thisconnection are fed directly to the ispLSI

device. The function of the signals onthis 8 -way connector is described in the`Low-cost ispLSI programmer' article inlast month's issue. For the time being,it is sufficient to know that the signalsoriginate from a compact programmerinterface which is connected to theCentronics port of a PC. With a few ex-ceptions, all other processor pins areavailable for I/O functions. Pins 37-44(1/016 through 1/023) are connecteddirectly to the segment terminals of sixLED displays. The I/O lines on pins 3through 8 (1/024 through 1/029) areused to enable and disable each LEDdisplay via a switching transistor. Theabsence of current limiting resistorsmay strike you as odd, but bear inmind the duty factor of 1/6 (0.16) of thedisplay drive signals. This can be donewith impunity as long as four or moredisplays are used. If fewer displays areused, the multiplex ratio must still be1/6. Alternatively, connect resistors inseries with the display segments.

The non -used I/O lines of the

ELEKTOR ELECTRONICS DECEMBER 1994

ispSTARTER KIT FROM LATTICE

K315 1-0

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26

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28

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17

18

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20

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ISPLS11016

I/08

1/09

1/010

1/011

1/012

1/013

1/014

1/015

IN3

SDO/1N1

SDI/INO

ISPEN

RST/VI

MODE/IN2

SCLK/Y2

.1= .1.

1/018

I/020

1/023

1/017

1/022

1/019

1/016

I/021

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DIG2

DIG3

DIG4

11

560/I 5600

BC557B

LD13 8

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23

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a

940093 - 11

Fig. 1. Circuit diagram of the experimenting board on which ispLSl components can be programmed without additional hardware. Togetherwith the ispStarter Kit supplied by Lattice, this board forms a powerful ispLSl development system.

ispLSI1016, 1/00 through 1/015, areavailable for experiments, and broughtout to pins on connectors K3 and K4.Input IN3 is also 'free', and connectedto K4. The last part of the circuit isformed by IC2. This CMOS 4060 gener-ates the clock signal for theispLSI1016. In the present circuit, theispLSI1016 is supplied with a 16 -MHzclock. Connector K2 supplies the sig-nals derived from this clock. These sig-nals may be used to supply suitableclock signals to external logic circuitsconnected to the processor.

The 5-V power supply is conven-tional, based on a 7805 and two ca-pacitors.

ConstructionThe circuit is best built on a prototyp-ing board of which the artwork isshown in Fig. 2. This board has alarge prototyping area which hasplenty of space to build your own ex-perimental extensions. The printed cir-

cuit board is available ready-madethrough the Elektor ElectronicsReaders Services.

The construction of the board is en-tirely straightforward. Fit a socket forthe ispLSI device (IC1), taking goodcare not to fit it the wrong way around.The same goes for the other compo-nents. Connectors K1 through K4 aresingle -row pin headers. The circuit isbest powered by a mains adapter withd.c. output. The adapter is connectedto PCB terminal block K5. Do take carenot to reverse the + and - wires on thisconnector. If you do, components willbe damaged in the circuit.

Sample application: aclockThe diskette supplied with the printedcircuit board for the ispLSI develop-ment board contains an examplewhich demonstrates how a small clockcan be realised with the system.Unfortunately this clock is a little fast.

In spite of the many registers in theispLSI1016 is not possible to derive a1 -second 'tick' from the 16 -MHz deviceclock. This is, however, possible if anispLSI1032 is used. Unfortunately,that device is not supported by theispStarter Kit. However, the fact the1016 -based clock is a little fast shouldnot distract from the usefulness of theexample, which is first and foremostaimed at making you acquainted withispLSI programming.

The time is displayed on LD3-LD6. Ajumper at pin 15 allows you to selectbetween 12 -hour and 24 -hour indica-tion.

The clock is adjusted with twopress -keys. It is advanced slowly bypulling pin 17 of the ispLSI1016 toground. That is done with a press -key.Similarly, the 'fast' setting is accom-plished with the aid of the press -keyconnected to pin 16. The pulses to becounted originate from pin 3 of IC2,and are applied to pin 20 of IC1.

The example programs on disk

ELEKTOR ELECTRONICS DECEMBER 1994

COMPONENTS

clearly illustrate how to go about pro-gramming ispLSI devices. However, toactually be able to use the program,you also need software that forms partof the ispLSI Starter Kit supplied byLattice.

The softwareThe ispStarter Kit supplied by Latticecontains development software for the

ispLSI1016 (pDS software; pLSIDevelopment System), software for theispGAL22V10 (yes, a GAL in isp tech-nology), an ispGDS (isp generic switch)Compiler with downloader, and anANSI -C compiler with source codes forthe download routines. The kit alsocontains the cable needed to connectthe experimenting board to your PC.Plus there's datasheets and one sam-ple each of the ispLSI1016,

aparecanallaiooaserallaOcalaDOcsooO

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940093-1

LD1I LD

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2-1 , 2600000000000000000000) 0 250000000000000-0110 K1 940093-1 000000000

000000000C6 0 000 000 0 0

Fig. 2. Track layout and component mounting plan of the printed circuit board designed forthe ispLSI experimenting board. Board available ready-made, see page 110.

ispGAL22V10 and ispGDS22/18/14devices. A really wonderful, and afford-able, kit which allows you to getstarted straight away.

The development software can beused on any PC running Windows 3.0or 3.1. The flow diagram in Fig. 3shows the different steps that make upthe design process. To begin with, thedesired circuit is divided into logicblocks (GLBs, Generic Logic Blocks)and I/O (input/output) cells. This stepis necessary to check beforehand if thedesign can actually be fitted into, say,an ispLSI1016. The logic functions of-fered by this device are listed inTable 1 in last month's introductoryarticle on ispLSI. The standard blocksavailable are:- Generic Logic Blocks (GLBs);- Output Routeing Pools (ORPs);- I/O cells;- a clock signal distribution network;- a connection matrix.

The basic functions of these blocks arediscussed in the 'Low-cost ispLSIProgrammer' article presented in lastmonth's issue of Elektor Electronics.

Use the software to formulate thelogic relations associated with theGLBs and the I/O cells. The graphicseditor enables these functions to be

COMPONENTS LIST

Resistors:R1 -R6 = 560f2R7 = 10k0R8 = 10MS2R9 = lk,f2

Capacitors:C1,C2 = 33pFC3 = 22pF 16 V radialC4,C5 = 100nFCB = lOnF

Semiconductors:T1 -T6 = BC557BIC1 = ispLS11016 (Lattice Inc.)IC2 = 74HCT4060IC3 = 7805

Miscellaneous:K1 -K4 = 10 -way header, single -rowK5 = 2 -way PCB terminal blockX1 = 16MHz crystalLD1-LD6 = HD1105-0 (Siemens)PCB and software on disk, set ordercode 940093.PCB (separately): order code 940093-1.Software (separately): order code946204-1.Prices and ordering information onpage 110.

ELEKTOR ELECTRONICS DECEMBER 1994

ispSTARTER KIT FROM LATTICE

Design Preparation

Design Entry

4

Design Conversion(optional)

Cell Verification(optional)

Design Verification

Lattice Place and Route

Simulation(optional)

Fuse Map Generation

Download to ispLSI Deviceor pLSI & ispLSI Programmer

940093-12

Fig. 3. These are the steps you have to gothrough if you want to program an ispLSI de-vice.

entered in Boolean notation, or asmacros. Macros can be picked from alibrary which forms part of the devel-opment system, and come completewith the indispensable comment ontheir function.

Alternatively, the device can be con-figured with the aid of a Lattice designfile (*.LDF). Once you know the syntaxand conventions, such a file can beproduced using almost any word -processor capable of outputting ASCIItext. Interestingly. a design producedvia the PDS software is capable of ex-porting the PDS software in that for-mat.

A 'cell verification' utility is availableto test individual functions for designerrors. The utility is extremely usefulas it reveals any structural error con-tained in the set of logic functions. Ifpossible, logic functions are mini-mized, while the software also checksif it is at all possible to realize the de-sired logic functions on the basis of thecomponents selected. Next, the entiredesign is taken through a 'design ver-ify' operation.

Once it is for sure that the design iserror -free, the software compiles theprogramming algorithm for the rele-vant ispLSI. This algorithm is used at alater stage by the FuseMap program.Furthermore, the netlist used by theLattice Route and Map are updated.

The Router starts to work as soon

as the software has decided that thedesign meets all requirements. On thebasis of the information contained inthe input files, a division is made, andthe logic sub -components are inter-connected. The window which appearson the computer screen while this op-eration is being performed allows theuser to interact in the process. For in-stance, it is possible at this stage totell the program which pins are to sup-ply the different I/O signals. Finally,the configuration of the IC is estab-lished.

Next, FuseMap is started. This sub-program generates the JEDEC filewhich is to be sent to the ispLSI pro-grammer. During programming, all de-vice inputs may be provided with apull-up resistor. That may be neces-sary to prevent undefined logic levelsat the inputs, causing the device tolatch up. The final option which is stillopen to the user is to actuate the de-vice read-out protection. That may bedone to prevent copies of the pro-grammed device being made.

An important advantage of theispLSI environment is that it is alwayspossible to convert an IC design to an-other component. That may be usefulif it appears that an improper (toosmall or too large) IC type has been se-lected for the purpose. In such cases, amore appropriate component can beselected without problems, and the`design' copied to it. Note however thatthat is only possible with Lattice's full-blown development system which un-

File DesignPart...

1993

IspCODE" Programmer'sReference Manual

PLSI and ispLSIveicllnientsYstem

UserMAN44' arnial

Fig. 4. The ispLSI Starter Kit sold by LatticeInc. and its distributors.

fortunately is much more expensivethan the ispLSI Starter Kit.

(940093)

The ispStarter Kit mentioned in this article isavailable from Lattice distributor MicroCall Ltd..17 Thame Park Road, name. Oxon OX9 3XD,England. Tel. (0844) 261939. fax (0844) 261678.

pLSI/ispLSI Development System -1016 Version 2.20 File: 4DIGITS.LIFCell Macro Library Zoom Search Message Help

Options...

Verity

Route...

DownLoad...

10

11

12

13

14

15

ii

IL

D_MI

MIS

- Edit GLB A3 Name: CARRY Line: 5Edit CellVerify Done

CBU14_6_2(CAO_D_MIN,IDMO,DM2I,CAI_D_M

EQUATIONSCAI D_MIN=CAO min; /11 Connect carryjn toEND;

ispLSIl 016-60L

ai

.=.j Edit GLB A7 Name: MIN Line: 7Edit CellVerify Done

Edit ClearLast Modification : Wed Aug 17 15:01:54 1994Read Of 4DIGITS.LIE Completed.GLB Cell A3 User Name CARRY.Status : VerifiedEdit GLB A3.GLB Cell A7 User Name MIN.Status : VerifiedEdit GLB A7.GLB Cell A7 User Name MIN.Status : VerifiedEdit GLB A7.

CBU14d_1(IMO..M31,CAI MIN,CLK,CD_MINI; *

EQUATIONSCD MIN=imll&m1Vm2&m3; 11 connect reset iCAI_MIN=cao_div; hl connect carry in to camEND;

940093 - 13

Fig. 5. This screendump shows how the ispLSI development software communicates with theuser. Thanks to the Windows graphics user interface the software is simple to use.

ELEKTOR ELECTRONICS DECEMBER 1994

14 Please mention ELEKTOR ELECTRONICS when contacting advertisers

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5410270640.2576525,6114574627421111.251462716.11.45UPC/27256921VU6027324317MD2702560.45oP027C5121315UPD270641125

EEPROMS

26064.25211060.15 10.95

28025020 484028025615 1960218125115210 2850028164132281648.21228640,35 1220240012400224004240162130044.20

59011930069304593056

93066

MISC. MEMORI

6341.1)4142148.45D0444275281PC1211143014.10011 I10771321/410OP,6613414EMCM40274C35825090N62512604N82S153NN8200501N6065043.9N6093064P51011.1T0712903057E1724510NT862406106TC5501P1.055044P 27C151701 45TC5.5174P.210556561.15943104401.

6:0

6020

40

38

60

30

16070

9595

18

40

18°150

40

3.30

420110

4 951660584.601.605604.955.906.96495

9.80

510510

16240

9840404412

295216

S

1844

9840209580OA49800940

1453 901 74

2903 15

3404 204 20160140

r:1 ; : : 64 .

TEL 081-471 9338 TLX 929709 VICOM G FAX 081-552 0946

DIGITAL INTEGRATED CIRCUIT SPECIALIST

4017 SERIES 45130 1 20 4016137 0.43 74160 094 7415165 059 7413669107

7415670 0.7840008 0 1640001.48 0.1840014 0.164001B 0 18- - -4001U8 02240026 01640068 0394007116 0 20

4°088 0 4°40094E 0 234009118 0 2940108 029404 48 0184011U8 0 48401246 0.1640128 0.20

451413 1.1245158 1 1245168 04445178 464

45186 0.4045198 03645208 03645216 0.7245228 0.8645268 0.5046278 0.58452138 04945290 0.5745308 192453113 4.44453213 0.44

401767 078401887 0.70402087 0.95402181 065407367 0384024137 0.76402587 0.38402701 0.45402697 056402987 a86404067 0.78404297 074404687 141404767 106404987 4.06405067 0 48

741614 0.9874163 1.2874164 12 074165 4.5774166 10674174 +5374475 42374160 12974184 POA74185 1.7674191 I4174192 44474193 46574221 12374259 2 9774265 1 46

7410170 POA7410173 03974151734 0 40

.7410474 0367411475 0347410181 1827419182 2.057415183 2.057410189 2.607440490 0.497411191 0497410192 0497415193 0.017418194 0.547411,944 0 577415195A 0.57

7415673 POA7415874 47607410682 2627415683 80074156843.657411685 POA7411686 POA7410687 8047411668 1.987419593 POA7011794 POA7411795 POA7419796 POA7419797 POA74/9848 PO4

10 TER Es

74000 06874002 ° 6874006 0 6874040 0 68

2404 0 6874020 09874030 09874032 06874042 3 2074048 3.2024073 4.6074074 4 4074,74 , 44.---..' . --74005 2 2274090 1.6074093 2 407,103.5 298740150 Sao740151 3.94740150 6 80

120e 0,

741064 - --740,65 2.0874022, 299740200 2 00740204 208740373 2.08740320 2.08

. n740901 4v740902 I 00740903 804740906 1 40

740"7 1.007409013 2.44740941 4600

740912 169044 4 2474°9-

740915 2 98140522 740740923 7 40

7,4,226,. 9'984 44 -'-''.". -s,

""-",'''''..."660 MI*1,3200 120000002457600 149

3 5795453 6860004.0000004.0960004.1943004 4336194 6080004 9152005 COG000610686005 2428805.800200

60006.1440006 4000000336 55200065536007 73 26008 0000008.8672v9830400100000040 69500440000012.0000043 97500

'

44 0000014 348,8614.74566544.7456045 00006s5000000

18.43200640 66000,s20 00000.522.1,940624.00000627.84800.530.00000,5

32.00'300548 000006S- Sees

41C331.1

0,480007072001 000000

41 ,,,,,44,4843"4°

''''"'"--2 097152

2 4,44,576002 4=3 """""

MC49A1441

3.275,03 57954550308007.0243,0 000000,,,,,r4004- 050,4200000440000046.0000020 0,0024 00000

UM.1

00000000492000

00000, 1 0000042 2800015 600004777/0716.0000020 003002, 0000024.00000

CRYSTALS MISC.64..44'''''''. 1000000MINI CYLINDER0032768

WATCH0 032769

60'

16°

0 98100202

401040

10

200210

20.8002

0264402,

0.780034

2040

9040

0 92240

441 -0 85

101010

02

40,130

6892

20699

I 68

3236.99315

3 "4.65774

1'492.

114225

166I 58225140, 14

, 25-2.40I,225, .14, 52, 90

?252.022.252 252 66225260250?25225?80

6.99

089

082

CODES

46298688 1820

'Mee'2 54

4539976 655164001 0 04104002 0 04454003 004

0.00104007 004104+48 0 03164149 0.06464150 008154446 0.061047284 0.241547354 0 241047364 0 244807406 02444187434 a241947444 a241947564 0.24165226E1 0 0914152326 0.091552348 0.091553376 0.413414534913 0 491853528 0 481953578 0 481553656 0 481553668 049141537013 0481953808 0 4844/5404 0 44105402 0 4,1,44,2074 , 55

40825 275458254 27516827 114100252 0205092.21300 066

1.4050822835 044441,9 0 604.4444 0.72AA215 0 58

058802482048

BAVI 0 0.08614.745 0.98Emw62 00664216 0.06613204 a3288242 2.488134058 0228080904°6Y179 04287205000 3'"16261.200 39813W28.100 09987732.50 460078805 06005160 a40461404 +590447209 1 2004200 0100 4202 0 2004,47 0140490 0.146696364 0687696174 088RE0534 0107PI32 /V 0 06

ZENER 01021E54600.

82793C7V5 2 66412193015 266112793018R 2 6662793020 2.6662793024V 266627930338 268B21030,20 04062X6109V2 009132261024V 009ZENER DIODES

4°W°W2 4114o 75VPme 603 each

ZENER 010DES

,5°W4, 4,1.=-'' "-',..'"'

'-1KA `"' 4$411

ZENER 010DES

13 WATT27100 20079.4801017 4004

ZENER DIODES3.0 WATT

7.5V to 2707

91,2114011 940ZENER DIODES

5.0 WATT33V to 2000Pnce 420 446,

ZENER 010066STUD MOUNT

20 WATT7 5V 10 757

91400 24144 44

446,,,R4r°4,4`4,,,P"-14".^4

094,200/0/

401313 0 2045348 2 0245366 i 22

405191 0 784052BT 0 84

70773 POA74276 156

7415496 0 687415197 0 66

74 C SERIES

40148 0.4240156 04240168 02440178 0 3840188 038401961 0.2640204E 0.36402013 0 3840216 0 4°

0538E1 0.8045.3913 06245418 05245436 0 5745449 21145478 1 6845496 POA45516 16245538 2 37

4053131 0 98006081 0.84406613T 059406697 0 384069U87 0.38407081 0 38407401 0.38407587 038407797 0.30

74279 1 3874283 12674298 POA74365 0.7074367 1.0674393 2.9074403 POA74423 POA

74 .15221 0 447419224 20247441240 0.424040067415241 0 427415242 0427410243 0 427415244 0.427411245 0422415247 0 44

7441000 019749002 0.197.4003 0247464004 0

74110U04 020749005 0.20

749008 0.207441010 0297011014 020

402213 0.4040238 0 20

45548 G 0145558 048

407887 0.38408161 036

7 LS SERIES 741.02413 0 687410249 099

7414°147040104 0.34

4023U8 02340244E 02.40248 0.3240250 0 1940269 0/44°278 0.3040289 0 3840298 0.35403013 0 21

4°318 11445326 0.70

40338 0 5$40346 140403513 03940368 2 5740378 12740396 07640398 3.22

40400 04240416 044

404108 0.3200428 01240438 036

055619 049055713 1 8845586 2.18456013 1.51

45619 4 7445626 Sts45666 . 10

45689 5.174569E1 104457246 0.704573P PO4458013

6.6445816 3 8545828 3 6545838 0.8645848 05745863 0.494597CP 6 904598E1 6.9045996 5.5047206 POA4720V PO447239 PO4

409381 045409481 0 95450067 205451081 102451187 135454213T 086451487 22045,681 102451881 4.10452081 116452531 1.07452287 1.224521187 0.8845341313 PO44530131 1 OS4544137 105454387 10245556T P00455681 1 054585137 0.9540,0687 0.534024481 1 354037367 234

741500 01874150, 0 18741102 016711003 018741904 021701105 024741106 051741007 0 51741508 0.48741009 0 18744510 046741511 013741112 0 4874L043 0 19741014 0 24744115 0.38741120 018741521 0 48741522 018741524 0.58741126 0 48741S27 0.18741028 024

7410251 0327411253 a447415256 0787416257 03174152574 0467411258 0 44741S2584 0467411259 0 467411260 0227415266 0327418273 0427415275 POA7410279 0 3374112130 0 6674LS283 0 457415290 0487410292 16 867415293 0 387415294 17 827415295 1117012954 1 157411298 0987410299 1.51

701020 072744102+ 022704027 022746030 0.22701032 0227411C42 0 46704054 029749058 04274,073 0.3474,40, 0.25746075 0407441076 04002701077 0 517414085 0.487444086 0.28701093 044

0.39741'01°77400,74140109 0 3574140112 0407460113 040

7460125 0.407010126 0477060131

CC IA DCCo nvc 70 r s

TOR CE.0344 5.603948 15.15 27503WI. 0.010 23 40

1 WOO OC/DC... _,...or 46161 ...411414

01111 011 byNewport

4/MA050545V

14MA°56946V914A05124120NMA0515,45VPace: 8 8.8544.

000C Convertersby Computer

Products

8"623 24 6016.4671 26.70P18672 26.70

.48,,M,T344.00

"1"''.1 46 50

45 ,,, RI

74000 0 4474 SO2 ON74 503 05474504 0.425082.281074 508 0.4274009 0.48745,0 0 9874041 0.4870 520 0.4870532 0.7874040 02574054 0.3674064 0.3674574 09974,6 112700442 4038705424 2127 s 32- 4 - ' - 6"745133 0.777 49134 I 957451, 08874513974

0885140 078

40153 126745157 1 72740163 260745174 092740175 135700182 3.29745189 214740195 240745240 I 00745241 1 12740244 +.77740757 I 22745256 42274 0260 0 70740273 2 44745274 2427 s4 280 0 96745283 1.90745374 218745394 210749412 210745436 2.62740437 262740472 232740734 2.82

40448 0364,3456 0 94404661 0.42

472413 1104734VP 9.80177418 40 26

74 SERIES741130 018741131 153741132 0 20

7415321 3.827415322 POA74153224 POA

0527010132 0 327460133 032 32

404713 038-40088 0 82

- - -404913 0.244049U0 02840509 0.2240518 0 3440526 0.3340536 0 3440548 0.66140558 0 62--405613 0.48

40596 28640606 0.3640638 0.4240668 0.22

40678 485

40688 °2040139U6 02140708 021

40718 132°40728 02°40738 02040756 0.19

40768 0.42

40778 °2°40786 0.2140816 0.1840829 0.2040886 0.39408613 0.3840899 0.9640938 0.24

4°9484 036.4.4,,,4441395. 0.'7"4" 11000978 2-7540988 0.40

40998 04241048 . 0,41608 0 85418413 0.8544746 12141758 114419413 , 43

44°99 11 0544109 16 454041P 21 584412FP POA74,,c200441261 POA44121'9 P084416P 9044419P POA4429P6 POA4433P POA

44439 POA4447P POA44580 PO4449P POA4489P POA

44908 12044959 82744979 1316

6.244544045063 19.45450113 032

47381/P 48.504750M:128.504752VP 29.2547537P POA475478 POA40085 1 9840097 06240098 062440610 2.4840101 POA40107 12040103 0 8840105 1 8240,06 0 3040,07 0 4240108 POA40109 4.2440140 4.0440114 2.6240116 124840117 1.8040407 1.2345460 05440451 0.5440162 0.5440,63 0.5445+74 0.3440175 0 4740113, POA40192 0.6240193 0.7440194 1.8240195 2 2440240 26240244 43840245 1.3640257 05440373 I 1040374 1 10

45026 44245027 51945028 4 4945040 POA4504, POA4510045406 7 9845409 1,0445138 PIDA45,45 40 0045146 PO445454 19.5015152 21.4545156 15.8045157 11.3845158 111045159 POA45496 2.7345407 8 4745414 POA45410 1580454213 POA45433 POA05440 POA46441 POA

7400 036740' 0 307402 0 347403 0347404 0.407405 0 407406 0.6874068 0.727407 06374074 0.657408 0377409 0 6774,0 0 357412 0 47413 0887414 07274118 0/37417 0.497420 0377425 0597426 0.487427 0597430 0 357432 0457437 0597438 0.407440 0 777442 0 557445 1 207446 1.597447 0.9874474 I 677451 0.577454 0727470 0517472 0.387173 0.597474 0.537475 0.677476 0.727490 1287483 4.407485 0.587496 0.537490 5 7674904 1347491 2567492 06774924 1.127493 06874034 0.7074954 4 407497 5 2374404 0.6774107 06074110 PO474116 3407446 POA74149 PO474121 09874123 09474125 0.6774163 0 987920 4.1974432 0.86

741533 020741137 0.16741538 0.18741140 018741142 032741144 2 11741547 0.55741148 054741549 4.38741151 019741554 019741555 0 32741573 0 407415734 0 48741074 0227411744 021741575 0 28741376 0613741.0764 072741577 0 42741178 032741063 0397411834 039741585 038741186 0 27741190 0 40744094 800741192 P0*741593 0 4474 C;48

741163 0 827410107 0 2874151074 0 387410109 0 2874101094 0 327415112 0.2874151124 0347410113 0.3274491134 0 38741194 0.32.7411414A 0 367411'22 0.397415'23 0 367410'25 0 287411'254 0 317415126741.51266 0 367410132 0297413133 0 457446138 0387110137 0967411138 0 3i7415139 0 947411145 0667410147 2 867411446 083741.3151 03270.5153 0.327411154 1.607415+55 0347415,56 0 387445,57 038703158 0 307441160 0 4874151604 0 50

7410323 3247111347 2 867411348 1 9137411352 1667410353 1.687411363 2 107415364 PO47415355 0307411365A 0 347410366 0387415366A 0.427 7 029741.53674 0 34711.5368 9 .367415368A 1.727410373 0.387410374 0 447415375 6 427415377 0.667411378 087410379.098741138, 4.- 0.9874403435 3.487411386 0.967411390 (1467415393 0 47415395 0 074113954 "74 9

0.84m

11 396 -74 0399 POA407415399 0 817415423 0 987415445 POA7411450 10741546 .6614 7.1674154653.827419467 778741146874 475.7161

-1-70154694 570741.0490 2.8574114914 11 8pOI7 15502 .41741864° '18°S501 5 807419569 POA74115ri 4 34741557.4 4.347411590 4.057415592 529,7415593 6.797411195 0.857410597 4957411624 POA7411822 PO47411623 2 987445670 2107411625 5 377410626 POA7415627 POA7410628 I 787410629 4.00

7410631 POA7415639 POA7415640 0.98

7490137 0767010138 0 34744101397460444 0617460447 0 6174140148 0.5574140151 0407040153 0407460154 0.9874410165 0697411°157 a427490156 0.47

7414°160 0°47460161 04274,0,02 0647460163 0427490464 a427460165 05574440168 0.8874.04 0767460474 042

.

74110175 0 3874110401 41474,0,, 0507460190 06774,0,01 05274440,02 07774,404, 0.,7460194 0.677040195 a4774,4c2.24

74140237 0/374,402 0.047460240 0.4474410241 044

'"749,243 0 74410244 0.437460245 a447490251 03574.c2 0.,7460257 0477490208 0 737010259 0 65

47 HC266 0/674110273 0.5474140279 054

447411°283 - -7010299 ,74.03, 58,,,.701C356 06574140365 0 417441C366 0 527010367 04774410366 0 527411673 0047460374 0447460375 0 767460377 0517010386 0.2974140310 oas74110393 041

7411C SERIFS

SURFACE NOUN

7411002M 0.3704C0314 0.3

74,400461 0 37450034 0314110096 037490160 0 3141401461 0.30744102011 0382450306 030145032M 0.367441074A 0.3674,1075IA 0.34

24508566 0.6574508304 0.327010123AM 0.4224440125M 006749013214 0.13746013841 0.387414013914

0.74904546" 0 6474110157M 0.30

7450181M 0-40745016410 0.40745016533 0 5774140473M 0.4874110470A 0.3E74110221AM 065701102406M 0.50749C244WM 0.5570402454W 0.62746025444 0.4274110259M 0.69

2450.273A04 015701-14367WM 0.537460373P00 0 50241-1C374WM 0 557490390M 0 57

24503930 05370105406M 0.767411054,MM 0 7670105736M 4 097060574 0 8474140388WM 0.84741104017M 0 4a746040206 0.487460404010 0.4470404046M 4.68741-C4060M 0 18741404066W 0 8474/404538M 0.78

RESISTORS

METAL FILM025W 1%

824 86415lOR to 110 340009N.6 Msn Onr 004:5pCS RN 74104

...METAL FILMPRECISION

025 WATT 0.1%E% Series1006110 2556Price 20.54 each

6106 PRECISIONNON -INDUCTIVE

WIRE WOUND0.15 WATT 0.4%

Tomp Coed 3P4844019.500.40OR 2,50R.406.10041Price: 23 65 each

HIGH PRECISIONNON-INDUCTWE

WIRE WOUND0.33 WATT 0.1%

74,, 0,7,6 34044

1050100206110RPrice: 23.60 each

,00R.4209 2509.5001,1X,214 59.1011700Prim 23.10 each

7444C7 SERIES

7460100 0227460102 0.227480753 0.267460104 0 227040708 0 2274,0710 0.,74140111 0227460144 0.267640.20 0 267400721 0 267010727 0 767460730 0 267460132 02274410742 0467460773 0.3674110774 0 2674140175 0357414C760 0.607060186 0367490193 0.5874601107 0 40744101109 0 4274607112 042741407123 0.6476.1074, 0 5674601126 0 56741107192 05070107137 0 527010713B 0 32741101139 0.46741107147 0.6874601151 0.5270401153 0 4474607454 1 2470107157 0.44

.

744101156 0 4874,07,60 0567001.61 0 5670401462 08474601163 a5670407164 0 5270401165 0 5274607 460 0.5274,07,73 0 5274,074, 0 52,,074, 05270107101 3.2470107182 09674607163 06474607,91 0.64

2460.7192 5'94744104,93 0 6474607194 4 43741107105 4 1670407275 0.9874607237 0.9474007238 051744101240 0 557040124, 0.5574607742 076744107243 0 76744107244 0 57

VOLT FA_RE ULATnRS

7803887 ., 457905 02878054 0327905F8 0457808 0.287808 0.267809 03278,2 0 2878124 0.727812010 0.327815 0.287818 0 287824 0.2878105 020701.056 028781.05401.120 4076105402 020791,2 026781124 5.25781,2402 0.3063145 0 2678424 0 2878166 1 40784105 0.32791,1056 0.36761412 0 32761.1124 0.36760134 0 65781415 0 3279005 048

,4AC SER ESCRYSTAL

OSC. MODULES744000 038744002 04974 4C04 0.4074400E1 0.40744010 0.407.Ac,, 0.40744014 0 40744020 040744032 040744074 0087440,09 0.647440112 0817440138 0 657440139 0657440451 OK7440153 0857440157 0 817440158 0 657440163 0.807440169 1987440174 0657440175 0807440191 1387440240 0927440241 0927440244 0.927460245 1 10

MEMORIES

spin 511PlastIC 619171. Output

4 Pins spacod atcorners ol 9444,00.Rea - 1.1,64. 4 9,52. 8 50.42. 46 6 201.494

Price: 22.96 es.24.32.40450MHz6.644 8360 ea.... .. ,..

0414 Dm

Us led MetalPackage

HCMOS Output

43 29,44 1 '444440 4,cornets 0113pinDiLFree M14736964 4 8 40424620.24.32-.40650MH zPoe* 24 20 eaen

DYNAMIC RAM

4164.10 I 00164.12 20

4 20184.151

12568 ?041256-10 2 4044258.12 2 4001280.15 22441464.12 4 4541464.10 4 454064.40 260642564.70 39000025642.10 6 95

5,1000.85 8 45446484464P.15

4 6046448416AP 20 4 25655302561.560

460663041341-080

3 95

166511000.85 8 45

CAPACITORSSURF ACE MOUNT

140614 yet Ceram63 VOLT

Case Size 1206120W1254114

lOac2748 3.30 1177100,9.220eF3V4FF

47010 /00041 220003300vr 41C.Off

4000041 724C403.100008

Pr1ce: 15p sack

470040 MOW91140,1617 0088

74P SERIES

74600 02874F02 0 2674604 02074606 0.7474607 07474908 0.2074610 0 2874611 02874613 0.6274614 0.41

450213 03845036 0.3845046 11245056 4.47450613 1.14

45064 1.1445088 4.1445106 0.5445556 54445128 038

4(10C SERIFSSURFACEMOUNT74151

400 0.3240028T 032401 ,EIT 0124011U1370.32401291 032404391 0.45401581 084

74145 11674150 4.90

09074,544 0.8074153 0.9074154 2 1674155 06174157 0 7474158 1.5774,50 3.,

7411161 0467411531A 0497411162 00741.51624 1 077418163 04274111634 0.4774/5164 0 347415165 0597410166 0.5974168 075

741.0644 09874406445 1287415602 0.9874156424 POA74116437415644 POA7411645 i 4274156461 4 287415646 5 857418651 POA

7460423 06474410521 0.95

4 .47°1°533 ".'..'7460534 0.05,

7060540 0.697450541 0607490563 0,307460564 0,741.10573 0.647460573p 0 72

ELEKTOR ELECTRONICS DECEMBER 1994

Please mention ELEKTOR ELECTRONICS when contacting advertisers

MICROPROCESSOR& SUPPORT ICs

1001140E0 7.401,141,0 9.306303XP 4.76

63210 4,63485CP32/Sm 1905628537p 18.82

6502 3.88

65024 5.40

6520 4.40

7101-0165-5 10.96H0146818AP 4.20

403-6402-9 6.16903-6440.9 6.89KM -6495.9 8.899044883 9.5211046505SP 9.85H046802P 550111/53210 4.2D90634857032 32.50

11.95

R65CO2P3 6.901365002174 895

85501 0272 ass66502172 5.9476502202 4SA880C32P 50408'.55.0 3.82SAB8259AP 3.59SA8800535.5 11,8704082054-2-P 4.12540820554.2-0 4.80

40578JN P06413961JH II 9240581KOSAAMD9.974058560 31.564059205 POAAD594AD 16.80AL7595AD 15 2462648JN 3.4040707.114 3.40467711J5 2.3440712.114 3.72

01,471701PG 6.98CM7207AIPD 7.94Ck17207IPD 7.240017209106 4.95CM721IAMIPL 4.6807.77211M119. 4.68CM7212AMIPL 4.45CA47213IPD 6.980M721641J1 29.32CM7217AIPI 12.32Ch172172118 12.98

LM31365,3 1,80LM38694 2.6007.438749 5.90LIS13885-1 4.255103899 3.40LM3900140439399 2.64LM3914N 4.40LM3935 0.305143937 0.30M139405 5.98

505928 140NE592514 0.92006225469 298NE60446 8.295E6055 8.605E612AN 2.876JM45550 1.20NJM4558DX 1.209188210P 12.06070704 1600707014

71.084C5/CP 0.84TL27L2CD/SMD1.98T5497605 3.4471.507CP 4.03

TL604CP 2.90TL7702ACP 2.09717735ACP 2.04TL7705CP .TL77094CP 2.04TL7770-SC 3.822L7837KC 5.10

GRAPHIC LCDDISPLAYS

LM258X 6722LMG6380071GR 64.44LM213X6. 77.44LM313XBN 106 20

INTELLIGENTLCD MODULES

LMO8706 33.10LM09106 53.04LM09256 6982

8C192 0.08BC1824 0,06801928 008001825 0.0880182LB 008$0193 0.08007830 0.08oct 83L 0.08B0184 0.08001845 0.08EIC1845 0.08

BFWI0 1.20BFX48 0.49BFX85 0.59SFX135 0.30BFX139 1.590FY50 0.384BFY52 0.3480990 0.9280107 0.2888170 0.388S250 0.52

4.40 9268000.8 11.59 conH063603XPS060045164 1360 407245.1N/BN POA CM72771.11 12.98 inosesz 2.76 0007CP O. T41/95C15 6 03 5M09356 37-44 BC184LC 0.6522708 BSR60 04865226 5.26 5068456P 6.92 30926611:41026 335 40736J5 9.12 CM721861.11 0.68 LM399H 7.85 07076P TLC2201CP 3.74

ALPHANUMERIC 8021218 0.06 135620 0.36

6551 4.43

65514 4.,6505272

90684527 5.6090686217 4.29H13.7159-5 20.98

SC6266144(728 135PAL16R4.15C5 2.987016055215 12.58

62741414 3.69AD75236N 980AD7537,15 34.9/3

CM721841P1 8.68C6172180141 8.88CS4721801.10 14.76

LM4250J 11.8251455505 0.28LM565CN 7.48

071107 5.850717717 3.77OP27GP

TLC22745N 2.8575025107 2.541L026527P 4.92

DOT MATRIXLCD MODULES

LM0161. 156970

802124602128 81302120 0.06

55821 0.4560081 1.8581136-600 1,10

6505273 4%884 03, 7159A.5 23.40 1110700265,2 497 407537LN POA 0147224/PL 11.92LM710C1-1 2.80 0P42FZ 7.44 TL02654CP 4.84 LMS84L 34 60212L8 0.08 1307196 4.94

65010202 TOO HIN10422 14.30 76108085AP-2 598 62754264 36.554075434071E 706

0672264UL 37.20 014723011 2.514723C5

0077GP 2.07 TLC271CP 0.84 linscomm 902" 0.08602135 0.09

BUZ11 1.80802116

65C22P2 4.go 10820869 17.06'M64024100 10.20

1MS34776L 6.68TMS3700NSB 8.76 40757800 46.15

0472268105 32.52CM724910M POA

0.70

LM733C5 2.650707050.95PCM63P.K 35.60

75027207 1.30TLC27203/smd 4.10

75107671 1.027510845 1.84 50274 0.08 602474 6.906,1

65051E-2 4.38 414640217575 TMS3702ANS 8.78 4084449 970 CM7555164 1.20 047410.J-14 2.20 PM7598HP 18.20 TLC274C5 2.40 7511065 2.46 BC214L 0.11 1RFZ14 1.14680007-10 99868000P-16 18206800009 0.,

iM6409PL 10.80IMS2600P.15 4.401N582500 7.80

776338354M 7.55TMS77CCHNL 10.74TMS9900NL 24.40

ADC0804LCN 6.804008040018/M 12.104000820005 22.40

0M7555174 0.840147555170 1.8566403175 12.92

LM741CN 0.4551474705 2.40LM747CN 0.90

0044368 0.956041935 POA6041945 2.85

T0033900 1.98TLC372CP 1.40TL0551CP 3.68

75113N 3.56751745 3.16751159 2.68

50237 0.088023980307 0.00

IREZ20 1.77J113 0.39J175 0.88

68008168 7.,680100,12 P06

16852506.8 7.00M5M82C51AP 4.20

TM5990161. 1416TM59902ANL 15.94

4000834006 10.80ADC84KG10 3898

L272 2.74L272M 2.30

LI:470CP 2.40LM790CP 240

904207014 7.92604550 0.90

71_0555CP 0.6575055605 1.58

751169 8.24

751219 3.66

5032780328 0.08

4270 0.92JA101 0.48

6802P 3.40 M5M82054/6 5.40 TMS9914ANL 23.10 AD09084P 18.42 52938 564 LM833N 2.82 6045587 0.60 TLC7524CN 5.24 75122N POA 137337 0.08 M8D5071.10

6803AP p MAB80314H1218 4.56 96599286175 7.40 000AC807/ 706 7293E 4.82 LS2854B 2.40 REFO1CP 3.33 TLE20610P 2.20 75136N 3.10 e0337-25 0.06 144E13070 1.10680563E 10.98 M0080354L6P 5.98 TMS9995JDL 69.05 ADG2014KN 7.35 L297/1 8.98 LS2888 3.60 REFO1HP 3.33 TLE2062CP 340 75140P 3.76 00489 0.24 144E340 0.68

68100 poo MC10103P 1.9B 0486364CP 1.98 000007CN 2.32 L299N 7.80 LS7219 _ 4.45 REFO2CP 3.98 70625640,19 3.45 757501, 1.84 B7490 0.30 MJE350 1.10

6821P 7.52 7.1010115L 3.21 11496376. 598 A8001500 1720 L4805CV 2.89 LT1006Clat 2.72 REFO3GP 3.69 TLE2161CP 2.42 7515414 1.75 60515 0.22 MJE520 0.80

&MOP 3.46, MC1011517 1.98 04963807 1.98 671.1270 3.60 5487 3.76 17101007 REF25Z 1.12 T9193477145 5.96 75155P 87517 0.20 MP03838 0.18

6844P 1726MC146805E2P 9.18 64963907 1.98 45.5.1013 4.60 54960 3.76 571028796 7.32 025604 POA 701024065E 7.14 75172/4G 4.82 8C546 0.05 MPS.408 0.12

68457 4.86 M068000012116 POA 1.161684513 4.95 AY -5.1013A 5.98570213 3.24 57103205 4.70 0441027 6.51 TP1C2802KV 9.42 751735 4.82 805464 0.06 MP6413 0.12

6845SP 5.40 MC65010010/12 1706 UM9151 POA Ay -3-1015D 3.60 LA6250 POA LT1070CT 9.14 SA410437 7.98 1710625914 3.28 75174N 3.88 6054613 0.051470463 D.32

686007 pc, MC6802P 2.47 UM91513 POA AY -5.1250 POA LA6359 POA LT1083CP 8.82 28.530497 9.92 TP1062735 3.28 75174140 4.82 80547 0.00 14172492 0.2468609P 4.377 MC6809P 6.78 0768236 POA 47.5 -3900 -PRO 9.96 LA6510 POA LT1086CT 2,90 SAA502513 7.85 TPIC6595N 3.28 751759 2.80 8C5474 000 MPSUO5

2.21

68521P 7.977 MC68217 1.80 UP827282C 4.98846109 1.66 1.46520 POA L71134C9 706 5495002680 TS04260P4 POA 2.16 805478 0.08 MT14770708 2.80

68640P 2.56 MC68407 5.05 6163628480 4.98866208 1.90 L07132 2.96 5101052 797 SA55602 3.40 TSCSOOCPE POA 7517687 230 805470 0.08 00147

1.85

684507 2.98 MC684418 18.40 818882860 4.98 C43046 0.51 LC7522 LT01099071 14.39 6E02000568 9.60 TSC7106CPL 6.81 75177P 4.88 80548 0.08OC19 1.135

68809P age 140684518 7.38 U1807010E4.10 9.10 CA3046090) 0.89 LC7555 POA L1C4850148 2.16 510230140C 6.78 75071160170 5.80 7517137 4.88 BC5488 0.08 00715 0.85

68821P 1.077 140685012 3.35 300701080-8 8.95 CA3054 0.94 1.0111404 PoA 510490 4.40 3E0274 i DC 0.18 70071260PS 5.80 75113261 2.96 BC549 0.08 0072 0.80

681340P 2.98 MC68705R3P 25.35 070701167-10 12.90 CA3059 1.20 LF135080 18.20 M5218AL POA 5035245 4.60 7007660074 1.49 75183N 2.96 005498 0.08 0078 0.80

80804 POA M178840012 7.02 00070115043 9.20 C4307647 2.42 LF3115 10.80 M5220 POA S17660CJ 1.92 1.110960 4.92 751888 0.46 80550 0.080001 14 0.80

855549.2 598 1/C56409P 7.62 070710550 4.38 CA3079 0.80 LF3475 2.40 M52385 POA 001452 6.75 U2066B 2134 75189AN 046 005508 0.09 00812 0.92

6000 3.40 M083140 6.60 UPD72014C 11.68 CA3080E 0.70 1535114 0.98 815296PPOA 51.23647 3.97 U24006 5.50 751895 0.48 605500 0.08 063643 018

8086-2 3.50 MCM6810P 3.00 07072010 6.60 CA3081 0.86 LF35314 0.86 1470681 1.25 SL311713 706 U42240PC 1.40 7543745 6.24 00556 0.08 14010690 0.788002136-128p94 4850 140/71684107 5.35 010075540 592 043089E 1.22 L135514

1332 MAX134CPL 17 95 5L4e6DP 336 U47090P 0.85 7545065 0.84 005564 0.06 T1002060 0.61

80028691010c 2440 MM5320014 3.40 5007654C 5.42 06309446 2.16 LF3565142 MAX1232CNG POA SL4900P 2.80 UA709PC 0.55 7545114 0.48 0055613 0.08 11021060 0.24

800856 4, W58767135 10.84 0707800-1 4.76 0430964E 3.48 LF3578N 4.98 MAX1232CPA 157 SL56008P 3.00 04715110 4.50 7545207 0.80 80557 0.08 TIP115 0.558001354.2 5.64 MM513174AN 14.80 0708003967 8.42 0430960E 7.82 L035,1419M0 4.95 MA (1259000 POA 556270007 330 0072377 0.70 704529 0e0 13055713 0.08 TIP121 0.6847777.504 7.60 MM58274014 9.18 UP0815540 5.84 063097E 2.60 513579 1,20 MAX162406G POA 506700007 5.47 U473304 298 75453BP 1.14 BC558 008 747145 1.37

9308400 mg M51.156328S /35 07282514PC 4.08 043120E POA 513913N 3.98 MAX232ACPE 4114 5145281014 POA 06741907 060 7545487 2.20 505586 0.08 TIP2955 0.88AM251.32568P 268 145148003580 46 0 1. 208253G2 3.32 063130BT 19.20 5E41104 1.46 MAX232CPE 280 065545111n 2,85 0574110 0.28 75462N 1.99 6055813 74030 0.48

MA251_625697 2.68 MS748003915610 6.45 0008253C-5 332 0031306 1.10 5041275 1.98 MAX232EWE 180 00012 0.20 114748C7 0.36 754627 1.98 1305594 0.08 1173055 0.88

AM2602PC 2.30 MSM800854 3.95 00082860 POA 0431406E 1.34 LF441CN0.75 14AX2326 2.80 07164800 5.59 U4748T0 0.52 759339 3.40 505590 0.08 TIP914 0.38

AM261_331DC 2.30 1/15171/300856-2 5.98 UPC/8741AD 12.52 C437406 0.48 LF442CN0,99 1468280070 894 004534 POA 51677000UIC P06 75488N 3.53 8C5604 008 012732A 0.40

AM261.03100 1.26 MSM80C86 7.60 UPC/87494C 13.98 0631466 090 1_1444019 2.71 MAX4520126 5.38 SP47400P 4.46 0579870 3.80 75469N 3.90 005600 0.08 11047 0.60

AM273191ADC 10 20 MSMEI1C55 4.60 620.10MHz 9.10 0431600 1.25 L60002CN 78.60 M40627004 2.96 508629017 3.44 U0658056 2.40 7547055 500 00184C DM 82755610 0.92AM27S281PC 6.25 14014820516 3.58 020-8161-17 6.95 CA3240E

1.15 LH0032CG 37.40 1468660006 972 SP8660DP 4.96 U0658014 2.60 754719 3.76 BCY7I 0.22 VN0104143 0.92

AM2964BDC 12.36 1401482053.2 3.98 V30-101i1He 12.90 043240E1 2.72 LIA101414 6.86 MA/1690400A 6.58 STK414111 5.20 UDN2981A 2.00 754729 2.28 00131 1.88 07466070 1.40

0M286500 6.36 MSM82C53,5 3.58 830-81449 9.20 043260E 1,68 LMI0CI4 9.24 MAX693CPE 8.58 STK5151 POA 007129826 2.00 7847397 3.76 730135 0.44 259068 2.96

0m2966p0 3.88 MS1082054.2 4.20 0610300 7.80 06328046 5.84 LM1114 8.60 144X694074 5.70 STK417111 7.10 00661196 1.65 75474P 2.98 602414 0.88 V00104 -N3 0.92

4142982600 324 MSM82C594.2 3.98 7/00106146 8.60 CA3280E 3.42 5141360052.60 MAX697005 6.59 5764181-V 9.60 U053501/74 709 7547774 2.98 Eff02420 0.52 07010452 0.9841468507 9.02 14516820846 3.30 25800110730 16.90 0455510E 0.20 5611370014 2.60 MAX7219CNG 715 014419211 7.80 ULN2001AN 0.44 75491N 2.46 60243 0.50 VP010493 0.92447823410 5.6, MSM82C840-2 3.60 20868112PSC 3.20 047410E 0,18 LM139114 3,40 MAX8211CPA 2.213 311(427705 10.80 ULN2002A 0.44 758LS176P 4.77 60516 0.78 ZTX212 0.18

AM9050000 4.95 MSM82088 12 60 2180-MP7) POA 055503-60 POA LM139J 8.60 MA2(90113CPE POA TA72157 7.20 0(6200365 0.44 754551925 5.14 80875 0.52 2170237 anAM9050CPC 460 88002865871 24.50 280016 -CPU 11.96 007925B POA LM1459N 0.82 MC1377P 4.93 TA725612 2.60 U191200445 1.40 75AL51934 5.14 60976 0.52 730900 0.1841,19102000 282 6800286-42/0 2/54 280113008250 8,25 01690J POA LM1496N 2.95 MCI 413P 0.74 747368P P06 ULN2024A 1.40 75071545 4,55 00679 0.54 ZTX313L 0.280m, BD, 955 680528680215136.20 2506 -CPU 1.25 DAC0800LCN 4.10 LM180114 7.92 MC144117 71.30 147658P 1.20 U5520326 1,40 75014059 3.86 130680 0.56 270320 0164,45557013 g.go 582356 3.68 2805-00U/0905 2.98 DA00832LCN 10.67 LM188114 4.80 MCI 4416L 77,60 747800507 0.48 UO1280349 0.84 7507856 3.98 827430 1.90 ZT)(510 6187,97967,274c 3,5 582645 3.68 2805-010 1.98 0400807 3.48 51416895 7.40 510144927 4.82 17192094/7 UM5100 PGA 7501985 2.11 50160 1.12

IC SOCKETS65-5-8136 645 11826126AN 3.25 2804 -DART 4.98 0600857 5.06 514159414 4.15 14014540137 2.10 748410K 2.80 3145191 3.80 75018960 2,11 BOOM 2.789,5-643", 6.45 61E125181F 10.04 2806.286 3.95 0601008505 10.73 LM218/1 15.75 MC145512 0.40 148449P POA X92211CP POA 75018949 .11 00T96, 3.60 LOW PROFILECi 1646MD 4.98 5516450N 4.68 2804/10 1 25 06C1222LC8 20.40 LM2396 90 M01455P1 0.60 7486594N 0312110KP B. 75C18914 2.11 GPIS'''. 0.08C8231A 58.65 NS16550415 12.60 280461010 4.48 081700117 17.91 LM290114 1.98 14014587 0.32 7448614 POA 71112/21 4.60 75150176N 465 00199 0.22

N0 Pin Gold Tin Gold

CO253 3.60 6008009,1 10.80 2808 -CPU 1.52 00201680 3.83 51429039 1.65 MC14881. 2.40 780 7205 0.60 71436238 1548 BF200 0.16of specTurn sldr sldr

TRANSISTORSTHYR1STORSCA8008513 698

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Z808 -LTC 3.002808 -DART 5.80

DG2I 1 1.560G508ACJ 3.95

LM2904N 1.42LM2917914 6.10

MC148818 0.38MC1489AL 2.25

7862409POATBA570 POA

2910346 3,784261445 POA

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ZNA234E 1E40

OPTOELECTRONICS

'PERSONAL COMPUTER PRODUCTSMOTHER BOARDSVESA 486 37/181ots,AMI,S19256k0ache 2 85(without CPU&DRAM)ISA 38800-40 with CPU, 128k Cache 2 85(without DRAM)

IMPORTANTAll prices ere

excluding V.A.T.

P&P Charge

4825 0604626 08°4933

DM960114 2.45 4 100820541.18P8340108 6.80 CL7107C01157LCC LM330114 MCT61 TD420650VDP 4.62 4838 00..5460 CONNOR/QUANTAM HARD DISK DRIVES 2100 for orders uptoDP822814 6360082385 36

P82C54.2 4.80

1941.1052105 1.90

04704OMV169P5 7.98CL7109CPL

5.209.85

LM3342 2.20LM3352 2.48

MF1OCCN 8.9514L924 4.90

TDA2595 3.327043048N 1.85

6,38 180mv, i 4.98LPS-170AT 170MB 12msec 35" LP C165CFS-2106 210MB ,4msec 35'LP 2175

640 exc. V.A.T.and

DP8304619 4 PALI 2H6CN 1.90 QM' 8C CL7116CPL 7.84 LM3362.2.5 1.48 MM53095 5.76 1043505 POA 8,,,,,, 1.60 570.2704T 270MB 12msec 3.5" LP C185 t 5.00 for orders over00831114 6.54 PAL16R48CN 2.17

OMVI8C61 7. 057117075 8.60 LM336Z-5.0 1.48 MM53105N 4,98 TDA3810 POA BPW41N 116575-340AT 340MB 12msec 3.5" LP £249 240 exc.V.A.T.

201221:144

76520010053 436 0145180611Ob10250 B.

CL7126CPL 8.60 5M3377 1.75 M1461800959 1.44 100440 POA 085.36 0.36FLOPPY DISK DRIVES applicable 18 all

0,7237.20

051232 3.,PAL20X8CNS 3.32PALC161.80.25C0 OMV62AW1 6,90

54534-6MI 4.20

CL7135CPI 9.95057136075 8.60

LM339AN 2.98LM339N 0.80NIUX2450

MP7570JD9.

TO44510 3.380269563 3.38

06717-3 0.84CNY215 POA

TEAC ED -2356F 1.44MB 3.5' 2 32TEAC F0-55GFR 1.2MB 525" 2 38

goods under theheading of 'Personal

0534865 3206.70 057137075 8.60 LM3404712 1.90 MUX24FP 9.80 7094660 860 0,og 0.40 GRAPHIC CARDS Computer Products'.

05341375 a, PALC20L8Z-45C05 SA336931 2.95SA450250 CL7606C01 12.24 L634075 0.48 MV500DP 3.05 TDA65797 POA 1-1071.-2200 528 ISA TRIDENT TV04 890013 1MB SVGA C 48003405614 4.80

6.77