E-L9637D Datasheet, PDF (8/15 Pages) STMicroelectronics – Monolithic bus driver with ISO 9141 interface

Electrical specification
L9637
Figure 4. ISO application circuit
VS
510 Ohm
VS
40V
R _KO
K
CK ^K
0.4 Ohm
Diagnostic
Tester
LI
L
VCC
RTX
RLO
RRX
5V
IK _OFF
-
+
1,75V
-
+
-
+
ILI
TX
VCC
I/O
RX
I/O
uP
LO
I/O
GND
VDD
ECU1
K
CK
LI
ECU2
8/15
Doc ID 1765 Rev 7