Monolithic Bus Driver 8-Pin SO N T/R

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

Operating power supply voltage range 4.5 V = V_S = 36 V (40 V for transients)

Reverse supply (battery) protected down to V_S = -24 V

Standby mode with very low current consumption IS_SB = 1 mA @ V_CC = 0.5 V

Low quiescent current in off condition ISOFF = 120 µA

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 -24 V = V_K = V_S

K output current limitation, typ. I_K = 60 mA

Defined OFF output status in undervoltage condition and V_S or GND interruption

Controlled output slope for low EMI

High input impedance for open V_S 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