PCF8574 Datasheet (Texas Instruments) - Remote 8-Bit I/O Expander

PCF8574, Remote 8-Bit I/O Expander

This 8-bit input/output (I/O) expander for the two-line bidirectional bus (I2C) is designed for 2.5V to 6V VCC operation.

The PCF8574 device provides general-purpose remote I/O expansion for most microcontroller families by way of the I2C interface [serial clock (SCL), serial data (SDA)].

The dev

PCF8574 Features

* Low standby-current consumption of 10μA max

* I2C to parallel-port expander

* Open-drain interrupt output

* Compatible with most microcontrollers

* Latched outputs with high-current drive capability for directly driving LEDs

* Latch-up performance ex