PCA9554A Datasheet - NXP

PCA9554A 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/.

PCA9554A 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

PCA9554A_PhilipsSemiconductors.pdf