CAT9555 Datasheet - ON Semiconductor

CAT9555 16-Bit I2C and SMBus I/O Port

The CAT9555 is a CMOS device that provides 16 *bit parallel input/output port expansion for I2C and SMBus compatible 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 .

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-ONSemiconductor.pdf