PCA8574PW,118

PCA8574PW,118 is a remote 8bit I/O expander for I²C-bus with interrupt. It consists of eight quasi-bidirectional ports, 400KHz I²C-bus interface, three hardware address inputs and interrupt output. The quasi-bidirectional port can be independently assigned as an input to monitor interrupt status or keypads, or as an output to activate indicator devices such as LEDs. The system host can read from the input port or write to the output port through a single register. Typical applications include LED signs and displays, servers, keypads, industrial control, medical equipment, PLCs, cellular telephones, mobile devices, gaming machines, instrumentation and test measurement.

• Supply voltage range from 2.3 to 5.5V
• I²C-bus to parallel port expander
• 400KHz I²C-bus interface (Fast-mode I²C-bus)
• 8bit remote I/O pins that default to inputs at power-up
• Latched outputs with 25mA sink capability for directly driving LEDs
• Total package sink capability of 200mA and low standby current (4.5µA typical)
• Active LOW open-drain interrupt output
• Eight programmable server addresses using three address pins
• 16 pin TSSOP package
• Operating temperature range from -40 to 85°C