L9669 Datasheet, PDF (1/13 Pages) STMicroelectronics – FAULT TOLERANT CAN TRANSCEIVER

L9669
FAULT TOLERANT CAN TRANSCEIVER
s FAULT TOLERANT DIFFERENTIAL
CAN TRANSCEIVER
s OPERATING SUPPLY VOLTAGE 6V TO 28V,
TRANSIENTS UP TO 40V
s LOW QUIESCENT CURRENT IN STANDBY
MODE (100µA) AND SLEEP MODE (37µA)
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
SO14
ORDERING NUMBER: L9669
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.
Figure 1. Block Diagram
KL30
(+12V)
Voltage ^+5V
Regulator
5Vint
75k
7
WAKE
VCC
12.5k
2
TXD
Wake-up
Control
VS INH
14 1
TXD
Control
CANH
Driver
CANH
Driver
VCC
10
11 CANH
12 CANL
CAN
BUSLINE
Filter
R _RTH
R _RTL
Receiver
3 _RXD
5
NSTB
6
EN
100k
July 2003
99AT0001
Low
Power
Control
100k
Error
Management
& Diagnosis
13
GND
CANH Termination
CANL Termination
8 RTH
9 RTL
4
NERR
1/13