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2470 BUS DRIVER / RECEIVER
2470
BUS DRIVER / RECEIVER
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. Output driver protection circuitry provides output shutdown if currents in excess of 25 to 30 mA occur. Additionally, over-voltage shutdown occurs when the bus voltage exceeds approximately 22 volts.
Data Sheet 27463
ULQ2470M
VCC VS REXT BUS
Rd Rd Td GND
1 2 3 4
8 7 6 5
FUNCTIONAL BLOCK DIAGRAM
Dwg.
2470 Datasheet
