TCA9554 Datasheet (Texas Instruments) - Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander

TCA9554, Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander

The TCA9554 is a 16-pin device that provides 8 bits of general purpose parallel input and output (I/O) expansion for the two-line bidirectional I2C bus (or SMBus) protocol.

The device can operate with a power supply voltage ranging from 1.65 V to 5.5 V.

The device supports both 100-kHz (Standard-mod

TCA9554 Features

* 1 I2C to Parallel Port Expander

* Open-Drain Active-Low Interrupt Output

* Operating Power-Supply Voltage Range of 1.65 V to 5.5 V

* 5-V Tolerant I/O Ports

* 400-kHz Fast I2C Bus

* Three Hardware Address Pins Allow up to Eight Devices on the I2C/SMBus