The ULQ2470L and ULQ2470M are bi-directional bus driver / receivers designed specifically for automotive applications. They are intended to be used as an interface between a microprocessor and a single-wire multiplex data bus operating from the A-line or battery. Each device consists of a wave-shaped open-collector driver, a pull-up resistor, and an input filter and buffer.

FEATURES AND BENEFITS
■ Over-Voltage Protection
■ Diode Isolation from both Ground and Supply
■ Reverse-Battery Protection
■ Low Supply Current
■ High Noise Immunity
■ Output Current Limiting
■ Low Standby Current—24 mA Max.
■ Open-Ground Protection
■ Under-Voltage Lockout