PCA9554 Datasheet (NXP) - 8-bit I2C and SMBus I/O port

PCA9554, 8-bit I2C and SMBus I/O port

The PCA9554 and PCA9554A are 16-pin CMOS devices that provide 8 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and were developed to enhance the NXP Semiconductors family of I2C-bus I/O expanders.

The improvements include higher drive capability, 5 V I/

PCA9554 Features

* Operating power supply voltage range of 2.3 V to 5.5 V

* 5 V tolerant I/Os

* Polarity Inversion register

* Active LOW interrupt output

* Low standby current

* Noise filter on SCL/SDA inputs

* No glitch on power-up

* Internal power-on reset

* 8 I/O pins which def