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PCA9554 - 8-bit I2C and SMBus I/O Port

PCA9554 Description

PCA9554 8-bit I2C and SMBus I/O Port with Interrupt .
The PCA9554 is a CMOS device that provides 8. bit parallel input/output port expansion for I2C and SMBus compatible applications.

PCA9554 Features

* an active low interrupt output which indicates to the system master that an input state has changed. The device’s extended addressing capability allows up to 8 devices to share the same bus. Features
* 400 kHz I2C Bus Compatible (Note 1)
* 2.3 V to 5.5 V Operation
* Low Stand

PCA9554 Applications

* This I/O expander provides a simple solution in applications where additional I/Os are needed: sensors, power switches, LEDs, pushbuttons, and fans. The PCA9554 consist of an input port register, an output port register, a configuration register, a polarity inversion register and an I2C/SMBus

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8-bit I2C and SMBus Port ON Semiconductor
ON Semiconductor PCA9554-like datasheet