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CAT9555 16-Bit I2C and SMBus I/O Port

CAT9555 Description

CAT9555 16-bit I2C and SMBus I/O Port with Interrupt .
The CAT9555 is a CMOS device that provides 16. bit parallel input/output port expansion for I2C and SMBus compatible applications.

CAT9555 Features

* an active low interrupt output which indicates to the system master that an input state has changed. The three address input pins provide the device’s extended addressing capability and allow up to eight devices to share the same bus. The fixed part of the I2C slave address is the same as the CAT955

CAT9555 Applications

* These I/O expanders provide a simple solution in applications where additional I/Os are needed: sensors, power switches, LEDs, pushbuttons, and fans. The CAT9555 consists of two 8
* bit Configuration ports (input or output), Input, Output and Polarity inversion registers, and an I2C/SMBus

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16-Bit I2C and SMBus Port ON Semiconductor
ON Semiconductor CAT9555-like datasheet