PCA9574 Datasheet (NXP Semiconductors)

PCA9574, low voltage GPIO

The PCA9574 is a CMOS device that provides 8 bits of General Purpose parallel Input/Output (GPIO) expansion in low voltage processor and handheld battery powered mobile applications and was developed to enhance the NXP family of I2C-bus I/O expanders.

The improvements include lower supply current, l

PCA9574 Features

* 400 kHz I2C-bus serial interface NXP Semiconductors PCA9574 8-bit I2C-bus and SMBus, level translating, low voltage GPIO with reset and interrupt

* Compliant with I2C-bus Standard-mode (100 kHz)

* Separate supply rails for core logic and I/O bank provides voltage level