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CAT9554 8-bit I2C and SMBus I/O Port

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Description

CAT9554, CAT9554A 8-bit I2C and SMBus I/O Port with Interrupt .
The CAT9554 and CAT9554A are CMOS devices that provide 8. bit parallel input/output port expansion for I2C and SMBus compatible applications.

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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. The CAT9554A is identical to the CAT9554 except the fixed part of the I2C slave address is different. This al

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 CAT9554/9554A consist of an input port register, an output port register, a configuration register, a polarity inversion register and an I2C/SMBu

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8-bit I2C and SMBus Port ON Semiconductor
ON Semiconductor CAT9554-like datasheet