_______________________________________________________________ Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

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Quad SPST +70V Analog Switches

19-5720; Rev 0; 12/10

General DescriptionThe MAX14756/MAX14757/MAX14758 are analog switches with a low on-resistance of 10I (max) that conduct equally well in both directions. All devices have a rail-to-rail analog-signal range. They operate with a sin-gle +10V to +70V supply in unipolar applications or Q35V dual supplies in bipolar applications. The bipolar sup-plies can be offset and do not have to be symmetrical.

The MAX14756 is a quad normally closed (NC) single-pole/single-throw (SPST) switch, the MAX14757 is a quad normally open (NO) SPST switch, and the MAX14758 has two NO and two NC SPST switches. These switches have 5I (typ) on-resistances and low on-leakage currents of 0.01nA (typ). The on-resistance flatness is 0.004I (typ).

The devices are suitable for a multitude of analog signal routing and switching applications. They are specified over an extended temperature range of -40NC to +85NC, but can be operated up to +125NC with elevated leakage currents.

ApplicationsIndustrial Control Systems

Instrumentation

Battery Management

Environmental Control Systems

Medical Systems

ATE System

Audio Signal Routing/Switching

Automotive

FeaturesS Single-Supply Operation from +10V to +70V

S Bipolar-Supply Operation Up to ±35V

S On-Resistance of 10I (max)

S RON Flatness of 0.004I (typ)

S 2.5nA (max) Off-Leakage Currents at +85°C

S Overvoltage/Undervoltage Clamping Through Protection Diodes

S 500µA (typ) Supply Current

S TSSOP 16-Pin Package

S -40°C to +85°C Ambient Temperature Range

S Functionally Compatible to DG411, DG412, and DG413

S Functionally Operational Up to +125°C

Ordering Information

+Denotes a lead(Pb)-free/RoHS-compliant package.

Functional Diagrams+

TSSOP

134 VDDVSS

143 EN2EN1

152 B2B1

161 A2A1

107 B3B4

116 EN3EN4

98 A3A4

125 VLGNDMAX14756

EN_ LOGIC SWITCHES

0 CLOSED

1 OPEN

MAX14756

+

TSSOP

134 VDDVSS

143 EN2EN1

152 B2B1

161 A2A1

107 B3B4

116 EN3EN4

98 A3A4

125 VLGNDMAX14757

EN_ LOGIC SWITCHES

0 OPEN

1 CLOSED

MAX14757

+

TSSOP

134 VDDVSS

143 EN2EN1

152 B2B1

161 A2A1

107 B3B4

116 EN3EN4

98 A3A4

125 VLGNDMAX14758

EN_ LOGIC SWITCHES 1, 4

0 CLOSED

1 OPEN

SWITCHES 2, 3

OPEN

CLOSED

MAX14758

PART FUNCTIONTEMP

RANGEPIN-PACKAGE

MAX14756EUE+Quad NC

SPST-40NC to +85NC

16 TSSOP

MAX14757EUE+Quad NO

SPST-40NC to +85NC

16 TSSOP

MAX14758EUE+Dual NO + NC SPST

-40NC to +85NC

16 TSSOP

2 ______________________________________________________________________________________

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Quad SPST +70V Analog Switches

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

VDD to VSS ...........................................................-0.3V to +72VVSS to GND ..........................................................-36V to +0.3VVL, EN_ to GND ........ -0.3V to the lesser of (+12V, VDD + 0.3V)A_, B_ to VSS ..............................-0.3V to (VDD + 2V) or 100mA

(whichever occurs first)Continuous Current into A_, B_ ....................................Q100mA

Continuous Power Dissipation (TA = +70NC) TSSOP (derate 11.1mW/NC above +70NC) .................889mWOperating Temperature Range .......................... -40NC to +85NCStorage Temperature Range ............................ -65NC to +150NCJunction Temperature ................................................... +150NCLead Temperature (soldering, 10s) ................................+300NCSoldering Temperature (reflow) ......................................+260NC

TSSOP Junction-to-Ambient Thermal Resistance (BJA) ...........90NC/W Junction-to-Case Thermal Resistance (BJC) ................27NC/W

ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES(VDD = +35V, VSS = -35V, VGND = 0V, VL = +3.3V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at TA = +25NC.)

ABSOLUTE MAXIMUM RATINGS

PACKAGE THERMAL CHARACTERISTICS (Note 1)

Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

POWER SUPPLY

VDD Supply-Voltage Range VDD +10 +35 V

VSS Supply-Voltage Range VSS -10 -35 V

VL Logic Supply-Voltage Range VL +1.6 +11 V

VDD Supply CurrentIDD(OFF) VEN_ to switch off state, VA_, VB_ = +20V 200 450

FAIDD(ON) VEN_ to switch on state, VA_, VB_ = +20V 500 800

VSS Supply CurrentISS(OFF) VEN_ to switch off state, VA_, VB_ = +20V 200 450

FAISS(ON) VEN_ to switch on state, VA_, VB_ = +20V 500 800

VL Current ILVL = +11V, VEN1 = VEN2 = VEN3 = VEN4 = (0.25 x VL) or ( 0.75 x VL)

0.4 mA

SWITCH

Analog-Signal Range VA_, VB_ Figure 1 VSS VDD V

Current Through Switch IA_, IB_ VA_, VB_ = +20V -50 +50 mA

On-Resistance RON IA_, IB_ = 10mA, VA_, VB_ = Q20V, Figure 1 5 10 I

On-Resistance Matching Between Channels

DRONIA_, IB_ = 10mA, VA_, VB_ = Q20V, 0V (Note 2)

0.3 0.5 I

On-Resistance Flatness RFLAT(ON) IA_, IB_ = 10mA, VA_, VB_ = Q20V 0.004 I

On-Leakage Current IA/B_(ON)

VB_ = Q20V, VA_= unconnected, Figure 2 -5 +5

nAVB_ = Q20V, VA_ = unconnected, TA = +25NC, Figure 2

0.01

Off-Leakage Current IA/B_(OFF)

VB_ = Q20V, VA_ = -20V, Figure 3 -2.5 +2.5

nAVB_ = Q20V, VA_ = -20V, TA = +25NC, Figure 3

0.01

_______________________________________________________________________________________ 3

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Quad SPST +70V Analog Switches

ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES (continued)(VDD = +35V, VSS = -35V, VGND = 0V, VL = +3.3V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at TA = +25NC.)

DC ELECTRICAL CHARACTERISTICS—SINGLE SUPPLY(VDD = +70V, VSS = VGND = 0V, VL = +3.3V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at TA = +25NC.) (Note 2)

Note 2: Guaranteed by design; not production tested.Note 3: All parameters in single-supply operation are expected to be the same as in dual-supply operation.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

LOGIC (EN1, EN2, EN3, EN4)

Input-Voltage Low VIL0.25 x

VLV

Input-Voltage High VIH0.75 x

VLV

Input Leakage Current VEN_ = 0V or VL -1 +1 FA

DYNAMIC CHARACTERISTICS

VDD/VSS Power-On Time RL = 10kI 1 Fs

Enable Turn-On Time tON VA _, VB_= Q10V, RL = 10kI, Figure 4 35 60 Fs

Enable Turn-Off Time tOFF VA_, VB_= Q10V, RL = 10kI, Figure 4 2 3 Fs

Off-Isolation VISOVA_, VB_= 1V RMS, f = 100kHz, RL = 1kI,CL = 15pF, Figure 5

65 dB

Crosstalk VCT RS = RL = 1kI, Figure 6 96 dB

-3dB Bandwidth BW RS = 50I, RL = 1kI, Figure 7 145 MHz

Total Harmonic Distortion Plus Noise

THD+N RS = RL = 1kI, f = 20Hz to 20kHz 0.001 %

Charge Injection Q A_, B_ = GND, CL = 1nF, Figure 8 580 pC

Switch-On Capacitance CINVDD = +50V, VSS = 0V, VA_ , VB_= +4V, f = 1MHz

40 pF

Switch-Off Capacitance CINVDD = +50V, VSS = 0V, VA _, VB_= +4V, f = 1MHz

35 pF

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

POWER SUPPLY

VDD Supply-Voltage Range VDD +10 +70 V

SWITCH

On-Resistance RON IA_ = 10mA, VA_, VB_= +20V, Figure 1 5 10 I

On-Resistance Matching Between Channels

DRONIA_, IB_ = 10mA, VA_, VB_ = +70V, 0V (Note 2)

0.3 0.5 I

Off-Leakage Current IA/B_(OFF) VB_= +40V, VA_= +10V, Figure 3 -2.5 +2.5 nA

4 ______________________________________________________________________________________

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Quad SPST +70V Analog Switches

Test Circuits/Timing Diagrams

Figure 1. On-Resistance Measurement Figure 2. On-Leakage Current

Figure 3. Off-Leakage Current

VINIIN

A_ B_

EN_ SWITCHCLOSED

VDD

VDD

GND

1µF

1µF1µF

VL

VL

VSS

VSS

V

MAX14756MAX14757MAX14758

MAX14756MAX14757MAX14758

VOUT

A_ B_

EN_ SWITCHCLOSED

VDD

VDD

GND

UNCONNECTED

1µF

1µF1µF

VL

VL

VSS

VSS

A

IB_(ON)

MAX14756MAX14757MAX14758

VOUTVIN

A_ B_

EN_SWITCHOPEN

VDD

VDD

GND

1µF

1µF1µF

VL

VL

VSS

VSS

A

IB_(OFF)

A

IA_(OFF)

_______________________________________________________________________________________ 5

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Quad SPST +70V Analog Switches

Test Circuits/Timing Diagrams (continued)

Figure 4. Enable Switching Time

Figure 5. Off-Isolation Figure 6. Crosstalk

MAX14756MAX14757MAX14758

VOUTB_EN_

A_ +10V

VDD

VDD

GND

1µF

1µF1µF

VL

VL

VSS

VSS

EN_

0V

50%

tR < 20nstF < 20ns

tON tOFF

90%

10%

+5V

0V

VOUT10kΩ50Ω

MAX14756MAX14757MAX14758 VOUT

VIN

B_

A_

EN_ SWITCHOPEN

VDD

VDD

GND

1µF

1µF1µF

VL

VL

VSS

VSS

RL = 1kΩ CL = 15pF

RS = 50Ω

OFF-ISOLATION = 20logVOUTVIN

MAX14756MAX14757MAX14758

VOUTB2A2

A1 EN1SWITCH 2 CLOSED

VDD

VDD

GND

1µF

1µF1µF

VL

VL

VSS

VSS

EN2

RL = 1kΩ

50Ω

VIN

CROSSTALK = 20logVOUTVIN

6 ______________________________________________________________________________________

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Quad SPST +70V Analog Switches

Test Circuits/Timing Diagrams (continued)

Figure 7. Frequency Response

Figure 8. Charge Injection

NETWORKANALYZER

VIN

VOUT MEAS REF

MAX14756MAX14757MAX14758

B_

EN_

A_

VDD

VDD

GND

1µF

1µF1µF

VL

VL

VSS

VSS

ON-LOSS = 20logVOUTVIN

SWITCHCLOSED

MAX14756MAX14757MAX14758

VOUTB_

EN_

A_

VDD

VDD

GND

1µF

1µF1µF

VL

VL

VSS

VSS

CL = 1nF

50Ω

ON ONOFF+5V

0VVEN

VOUTVOUT

VOUT IS THE MEASURED VOLTAGE DUE TO CHARGETRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF.Q = CL × VOUT

0V

_______________________________________________________________________________________ 7

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Quad SPST +70V Analog Switches

Typical Operating Characteristics(TA = +25NC, VL = +3.3V, unless otherwise noted.)

VL INPUT CURRENT vs. VEN_M

AX14

756

toc0

9

VEN_ (V)

I L (µ

A)

4321

10

20

30

40

50

60

70

80

90

100

00 5

VDD = +35VVSS = -35V

SUPPLY CURRENT vs. TEMPERATURE

MAX

1475

6 to

c08

TEMPERATURE (C)

I DD,

I SS

(µA)

1109580655035205-10-25

500

600

700

800

900

1000

400-40 125

VDD = +35VVSS = -35VVL = +3.3V

IDD

ISS

CHARGE INJECTION vs. TEMPERATURE

MAX

1475

6 to

c07

TEMPERATURE (°C)

Q (p

C)

1109580655035205-10-25

200

400

600

800

1000

0-40 125

VDD = +35VVSS = -35V

ON-LEAKAGE vs. TEMPERATURE

MAX

1475

6 to

c06

TEMPERATURE (°C)

LEAK

AGE

CURR

ENT

(nA)

1109580655035205-10-25

0.01

0.1

1

10

100

0.001-40 125

VDD = +35VVSS = -35V

IB_(OFF)

IA_(OFF)

ON-LEAKAGE vs. TEMPERATUREM

AX14

756

toc0

5

TEMPERATURE (°C)

LEAK

AGE

CURR

ENT

(nA)

1109580655035205-10-25

0.01

0.1

1

10

100

0.001-40 125

VDD = +35VVSS = -35V

I(ON)

ON-RESISTANCE vs. VB_ AND TEMPERATURE(SINGLE SUPPLY)

MAX

1475

6 to

c04

VOUT (V)

R ON

(Ω)

6560555045403530252015105

2

4

6

8

10

00 70

VDD = +70VVSS = 0V TA = +125°C

TA = -40°C

TA = +25°C

TA = +85°C

ON-RESISTANCE vs. VB_(SINGLE SUPPLY)

MAX

1475

6 to

c03

VOUT (V)

R ON

(Ω)

605040302010

4.1

4.2

4.3

4.4

4.5

4.00 70

+70V+40V

+20V

ON-RESISTANCE vs. VB_ AND TEMPERATURE(DUAL SUPPLIES)

MAX

1475

6 to

c02

VOUT (V)

R ON

(Ω)

302520151050-5-10-15-20-25-30

2

4

6

8

10

0-35 35

VDD = +35VVSS = -35V TA = +125°C

TA = -40°C

TA = +85°C

TA = +25°C

ON-RESISTANCE vs. VB_(DUAL SUPPLIES)

MAX

1475

6 to

c01

VOUT (V)

R ON

(Ω)

302520151050-5-10-15-20-25-30

4.0

4.1

4.2

4.3

3.9-35 35

±35V

±10V±20V

±30V

8 ______________________________________________________________________________________

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Quad SPST +70V Analog Switches

Typical Operating Characteristics (continued)(TA = +25NC, VL = +3.3V, unless otherwise noted.)

TURN-OFF TIME vs. INPUT VOLTAGE

MAX

1475

6 to

c16

VA_ (V)

t OFF

(µs)

302520151050-5-10-15-20-25-30

5

10

15

20

0-35 35

VDD = +35VVSS = -35V

TURN-ON TIME vs. INPUT VOLTAGE

MAX

1475

6 to

c15

VA_ (V)

t ON

(µs)

302520151050-5-10-15-20-25-30

10

20

30

40

50

0-35 35

VDD = +35VVSS = -35V

PSRR vs. FREQUENCY

MAX

1475

6 to

c14

FREQUENCY (MHz)

PSRR

(dB)

1001010.1

-80

-60

-40

-20

0

-1000.01 1000

VDD = +35VVSS = -35V

VSS

VDD

TOTAL HARMONIC DISTORTION PLUSNOISE vs. FREQUENCY

MAX

1475

6 to

c13

FREQUENCY (kHz)

THD+

N (%

)

1010.1

0.001

0.002

0.003

0.004

0.005

00.01 100

VDD = +35VVSS = -35V

ON-LOSS vs. FREQUENCY

MAX

1475

6 to

c12

FREQUENCY (MHz)

ON-L

OSS

(dB)

1001010.1

-40

-30

-20

-10

0

-500.01 1000

VDD = +35VVSS = -35V

OFF-ISOLATION vs. FREQUENCY

MAX

1475

6 to

c11

FREQUENCY (MHz)

OFF-

ISOL

ATIO

N (d

B)

1001010.1

-100

-80

-60

-40

-20

0

-1200.01 1000

VDD = +35VVSS = -35V

CROSSTALK vs. FREQUENCY

MAX

1475

6 to

c10

FREQUENCY (MHz)

CROS

STAL

K (d

B)

1001010.1

-80

-60

-40

-20

0

-1000.01 1000

VDD = +35VVSS = -35V

_______________________________________________________________________________________ 9

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Quad SPST +70V Analog Switches

Pin Configuration

Pin Description+

TSSOP

134 VDDVSS

143 EN2EN1

TOP VIEW

152 B2B1

161 A2A1

107 B3B4

116 EN3EN4

98 A3A4

125 VLGND

MAX14756MAX14757MAX14758

PIN NAME FUNCTION

1 A1 Terminal A of Switch 1

2 B1 Terminal B of Switch 1

3 EN1Enable Input of Switch 1. When EN1 is driven high, the switch’s state (NO/NC) changes (see Tables 1, 2, and 3).

4 VSSNegative Supply Voltage. Bypass VSS to GND with a 1FF ceramic capacitor (100V rated) as close aspossible to the pin.

5 GND Ground

6 EN4Enable Input of Switch 4. When EN4 is driven high, the switch’s state (NO/NC) changes (see Tables 1, 2, and 3).

7 B4 Terminal B of Switch 4

8 A4 Terminal A of Switch 4

9 A3 Terminal A of Switch 3

10 B3 Terminal B of Switch 3

11 EN3Enable Input of Switch 3. When EN3 is driven high, the switch’s state (NO/NC) changes (see Tables 1, 2, and 3).

12 VL Logic Supply Voltage. Bypass VL to GND with a 1FF ceramic capacitor as close as possible to the pin.

13 VDDPositive Supply Voltage. Bypass VDD to GND with a 1FF ceramic capacitor (100V rated) as close aspossible to the pin.

14 EN2Enable Input of Switch 2. When EN2 is driven high, the switch’s state (NO/NC) changes (see Tables 1, 2, and 3).

15 B2 Terminal B of Switch 2

16 A2 Terminal A of Switch 2

10 _____________________________________________________________________________________

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Quad SPST +70V Analog Switches

Detailed DescriptionThe MAX14756/MAX14757/MAX14758 are analog switches with low on-resistance of 10I (max) that con-duct equally well in both directions. All devices have a rail-to-rail analog-signal range. They operate with a single +70V supply in unipolar applications or Q35V dual supplies in bipolar applications. The bipolar supplies can be offset and do not have to be symmetrical.

The MAX14756 is a quad NC SPST switch, the MAX14757 is a quad NO SPST switch, and the MAX14758 has two NO and two NC SPST switches. These switches have 5I (typ) on-resistances and low on-leakage currents of 5nA (max). The on-resistance flatness is 0.004I (typ). These devices are suitable for a multitude of analog-signal rout-ing and switching applications, and are functonally oper-ational up to +125°C with increased leakage currents.

Applications InformationLow-Distortion Audio

The MAX14756/MAX14757/MAX14758 switches, having low RON and very low RON variation with signal ampli-tude, are well suited for low-distortion audio applica-tions. The Typical Operating Characteristics show Total Harmonic Distortion (THD) vs. Frequency graphs for several signal amplitudes.

Current Through the SwitchesThe current flowing through every switch must be limited to Q50mA for normal operation. If the current exceeds this limit, an internal leakage current flows from the switch to VSS. Larger input currents do not destroy the device, as long as the Absolute Maximum Ratings are not exceeded.

Input-Voltage ClampingFor applications that require input voltages beyond the supplies rails, the internal input diodes to VDD and VSS can be used to limit the input voltages. As shown in Figure 9, series resistors can be employed at the inputs to limit the currents flowing into the diodes during under-voltage and overvoltage conditions. Choose the limit-ing resistors such that the input currents are limited to IIN_(MAX) = 100mA. The values of the current-limit resis-tors can be calculated as the larger of RLIM+ and RLIM-.

IN DDLIM

IN_

V (MAX) VR

I (MAX)+−

=

SS INLIM

IN_

V V (MIN)R

I (MAX)−−

=

During an undervoltage or overvoltage condition, the input impedance is equal to RLIM. The additional power dissipation due to the fault currents needs to be calcu-lated. During an overvoltage or undervoltage clamping condition on one switch input, the other switches of the MAX14756/MAX14757/MAX14758 operate normally.

Beyond-the-Rail InputIf input voltages are expected to go beyond the supply voltages, but within the absolute maximum supply volt-ages of the MAX14756/MAX14757/MAX14758, add two diodes in series with the supplies as shown in Figure 10.

Table 1. MAX14756 Truth Table

Table 2. MAX14757 Truth Table

Table 3. MAX14758 Truth Table

LOGIC SWITCH

EN1 0 A1/B1 Closed

EN2 0 A2/B2 Closed

EN3 0 A3/B3 Closed

EN4 0 A4/B4 Closed

EN1 1 A1/B1 Open

EN2 1 A2/B2 Open

EN3 1 A3/B3 Open

EN4 1 A4/B4 Open

LOGIC SWITCH

EN1 0 A1/B1 Open

EN2 0 A2/B2 Open

EN3 0 A3/B3 Open

EN4 0 A4/B4 Open

EN1 1 A1/B1 Closed

EN2 1 A2/B2 Closed

EN3 1 A3/B3 Closed

EN4 1 A4/B4 Closed

LOGIC SWITCH

EN1 0 A1/B1 Closed

EN2 0 A2/B2 Open

EN3 0 A3/B3 Open

EN4 0 A4/B4 Closed

EN1 1 A1/B1 Open

EN2 1 A2/B2 Closed

EN3 1 A3/B3 Closed

EN4 1 A4/B4 Open

______________________________________________________________________________________ 11

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Quad SPST +70V Analog Switches

During undervoltage and overvoltage events, the internal diodes pull VDD/VSS supplies up/down. An advantage of this scheme is that the input impedance is high and currents do not flow though the MAX14756/MAX14757/MAX14758 during overvoltage and undervoltage events. The input voltages must be limited to the voltages speci-fied in the Absolute Maximum Ratings section.

Chip InformationPROCESS: BiCMOS

Package InformationFor the latest package outline information and land patterns (footprints), go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.

Figure 9. Input Overvoltage and Undervoltage Clamping

Figure 10. Beyond-the-Rail Application

VDD

VSS

RLIMVIN

A1B1

RLIMVIN

A2B2

RLIMVIN

A3B3

RLIMVIN

A4B4

MAX14756MAX14757MAX14758

V+

R

VIN

VDD

VSS

V-

B_A_

PACKAGE TYPE

PACKAGE CODE

OUTLINE NO.

LAND PATTERN NO.

16 TSSOP U16+1 21-0066 90-0117

http://pdfserv.maxim-ic.com/package_dwgs/21-0066.PDFhttp://pdfserv.maxim-ic.com/land_patterns/90-0117.PDF

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

12 Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600© 2010 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.

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Revision History

REVISIONNUMBER

REVISIONDATE

DESCRIPTIONPAGES

CHANGED

0 12/10 Initial release —