ISO 9141 INTERFACE

DESCRIPTION
The L9637 is a monolithic integrated circuit containing standard ISO 9141 compatible interface functions.

■ OPERATING POWER SUPPLY VOLTAGE RANGE
   4.5V ≤ VS ≤ 36V (40V FOR TRAN SIENTS)
■ REVERSE SUPPLY (BATTERY)
   PROTECTED DOWN TO VS ≥ -24V
■ STANDBY MODE WITH VERY LOW CURRENT CONSUMPTION
   ISSB 1µA @ VCC 0.5V
■ LOW QUIESCENT CURRENT IN OFF CONDITION ISOFF = 120µA
■ TTL COMPATIBLE TX INPUT
■ BIDIRECTIONAL K-I/O PIN WITH SUPPLY VOLTAGE
   DEPENDENT INPUT THRESHOLD
■ OVERTEMPERATURE SHUT DOWN FUNCTION SELECTIVE
   TO K-I/O PIN
■ WIDE INPUT AND OUTPUT VOLTAGE RANGE -24V ≤ VK ≤ VS
■ K OUTPUT CURRENT LIMITATION, TYP IK = 60mA
■ DEFINED OFF OUTPUT STATUS IN UNDER VOLTAGE CONDITION
   AND VS OR GND INTERRUPTION
■ CONTROLLED OUTPUT SLOPE FOR LOW EMI
■ HIGH INPUT IMPEDANCE FOR OPEN VS OR GND CONNECTION
■ 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