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V
S
K OUTPUT CURRENT LIMITATION, TYP I
K
=
60mA
DEFINED OFF OUTPUT STATUS IN UNDER-
VOLTAGE CONDITION AND VS OR GND IN-
TERRUPTION
CONTROLLED OUTPUT SLOPE FOR LOW
EMI
HIGH INPUT IMPEDANCE FOR OPEN V
S
OR
GND CONNECTION
BLOCK DIAGRAM
SO8
Minidip
ORDERING NUMBERS:
L9637D
L9637
DEFINED OUTPUT ON STATUS OF LO OR
RX FOR OPEN LI OR K INPUTS
DEFINED K OUTPUT OFF FOR TX INPUT
OPEN
INTEGRATED PULL UP RESISTORS FOR
TX, RX AND LO
EMI ROBUSTNESS OPTIMIZED
DESCRIPTION
The L9637 is a monolithic integrated circuit con-
taining standard ISO 9141 compatible interface
functions.
VCC
VS
RTX
RL O
RRX
K
IK
OFF
-
+
1, 75 V
TX
-
+
LI
IL I
RX
-
+
LO
GND
December 1998
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