The LTM®2889 is a robust isolated CAN transceiver that breaks ground loops by isolating the logic level interface and linetransceiver. An onboard DC/DC converter powers the transceiver and provides up to 0.75W for powering additional systemcircuitry. The ISO 11898-2 and CAN FD compliant CAN transceiver supports an extended common mode range of ±36V, is ±60V fault protected and ±25kV ESD protected, and provides uninterrupted communication during common mode transients over 30kV/μs. This ensures high system reliability under harsh operating conditions.

Features n Isolated 4Mbps CAN FD Transceiver n 2500VRMS for 1 Minute per UL1577 n Up to 150mA Isolated Power Output n No External Components Required n ±60V Fault Protection n High Common Mode Transient Immunity: 30kV/µs

n ±25kV ESD Transceiver Interface n Low Power OFF Mode: < 1µA Typical n 15mm × 11.25mm BGA Package

Isolated CAN + Power

POWERISOLATED

TXD

3.3V or 5V

5V OUT

Galvanic Isolation

CANH

CANL

CANBUSRXD

CANController

LTM2889

REG

Rugged 4Mbps μModule® CAN FD TransceiverFeatures 2500VRMS Isolation and ±25kV ESD Protection

LTM2889 Surviving 25kV ESD Zap

L, LT, LTC, LTM, Linear Technology, the Linear logo and µModule are registered trademarks and the Isolator logo is a trademark of Analog Devices, Inc. All other trademarks are the property of their respective owners.

Safety, EMI and RF/Magnetic Field ImmunityAll Linear Technology μModule isolators, including the LTM2889, pass accepted safety standards, including United States’ UL1577 and Europe’s IEC60747-5-2, which test isolation barrier performance under various environmental conditions and require 100% production screening. The EMI chart shows the LTM2889 well below the CISPR 22 Class B limit. The LTM2889 passes the RF and magnetic field immunity testing requirements per European Standard EN 55024.

Common Mode Transient ImmunityUnlike other isolated solutions, the LTM2889 provides continuous, uninterrupted communication through common mode transient events greater than 30kV/μs without introducing any priority data jitter or data corruption.

Isolated Supply Voltage Output The LTM2889 is self-powered and provides an adjustable 5V, up to 0.75W, isolated supply for powering any supporting components on the isolated bus side. This regulated power is continuously available over the operating temperature range, even while driving full CAN compliant signal levels.

DeviceNet CompatibleDeviceNet is a network standard based on the CAN bus and places requirements on the transceiver that exceed those of the ISO 11898-2 standard. The LTM2889 meets or exceeds the following ISO 11898-2 and DeviceNet requirements:

Parameter ISO-11898-2 Requirement DeviceNet Requirement LTM2889

Number of Nodes N/A 64 166Minimum Differential Input Resistance 10kΩ 20kΩ 50kΩDifferential Input Capacitance 10pF (Nom) 24pF (Max) 8.4pF (Typ)Bus Pin Voltage Range (Survivable) –3V to 16V (for 12V Battery) –25V to 18V –60V to 60VBus Pin Voltage Range (Operation) –2V to 7V –5V to 10V –36V to 36V (VCC = 5V)

–25V to 25V (VCC = 3.3V)Connector Mis-Wiring Tests, All Pin-Pin Combinations

N/A ±18V ±60V

LTM2889–3; VCC2 = 3.3V

LTM2889–3; VCC2 = 5V

LTM2889–5; VCC2 = 5V

LTM2889–5; VCC2 = 3.3V

TRANSMITTING AT 4Mbps

TEMPERATURE (°C)–50 –25 0 25 50 75 100 125

60

80

100

120

140

160

180

200

220

240

OUT

PUT

CURR

ENT

(mA)

50ns/DIV

2V/DIV

2V/DIV

MULTIPLE SWEEPSOF 45kV/µs COMMON

MODE TRANSIENTS

TXD RXD

DETECTOR = QPEAKRBW = 120kHzVBW = 300kHz

SWEEP TIME = 17s# OF POINTS = 501

CISPR 22 CLASS B LIMITDC1903A–ADC1903A–B

FREQUENCY (MHz)0 100 200 300 400 500 600 700 800 9001000

–30

–20

–10

0

10

20

30

40

50

60

EMI (

dBµV

/m)

0716

www.linear.com/2889 n 1-800-4-LINEAR