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L9669

July 2003

s

FAULT TOLERANT DIFFERENTIAL

CAN TRANSCEIVER

s

OPERATING SUPPLY VOLTAGE 6V TO 28V,

TRANSIENTS UP TO 40V

s

LOW QUIESCENT CURRENT IN STANDBY

MODE (100

s

ON CHIP DIAGNOSIS FOR ERRORS ON THE

PHYSICAL BUSLINES WITH MICRO

CONTROLLER INTERFACE

s

OPTIMIZED EMI BEHAVIOUR DUE TO LIMITED

AND SYMMETRIC SLOPES OF CAN SIGNALS

s

AUTOMATIC SWITCHING TO SINGLE WIRE

MODE UPON BUS FAILURES

s

TWO-EDGE SENSITIVE WAKE-UP PIN

s

SUPPORTS TRANSMISSION WITH GROUND

SHIFT VOLTAGES:

SINGLE WIRE: 1.5V

DIFFERENTIAL WIRE: 3v

s

AN UNPOWERED NODE OR UNSUFFICIENT

SUPPLIES DO NOT DISTURB THE BUS

LINES

DESCRIPTION

The L9669 is an integrated circuit which contains a

CAN physical line interface. It integrates all main lo-

cal functions for automotive body electronic applica-

tions connected to a CAN bus.

SO14

ORDERING NUMBER: L9669

FAULT TOLERANT CAN TRANSCEIVER

Figure 1. Block Diagram

75k

99AT0001

Wake-up

Control

12.5k

7

2

TXD

Control

CANH

Driver

CANH

Driver

Filter

Receiver

Error

Management

& Diagnosis

CANL Termination

CANH Termination

Low

Power

Control

100k

100k

5

6

14

1

Voltage

Regulator

INH

VS

+5V

3

8

9

4

RTL

NERR

RTH

RXD

11

CANH

12

CANL

R

RTH

R

RTL

CAN

BUSLINE

13

GND

WAKE

TXD

NSTB

EN

KL30

(+12V)

10

VCC

VCC

5Vint