PCA9554 Datasheet - Texas Instruments

PCA9554 Remote 8-Bit I2C AND SMBus I/O Expander

This 8-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 2.3-V to 5.5-V VCC operation. It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock (SCL), serial data (SDA)]. The PCA9554 consists of one 8-bit Configura.

PCA9554 Features

* 1 I2C to Parallel Port Expander

* Open-Drain Active-Low Interrupt Output

* Operating Power-Supply Voltage Range of 2.3 V to 5.5 V

* 5-V Tolerant I/Os

* 400-kHz Fast I2C Bus

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

PCA9554-etcTI.pdf