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CAT9554A Datasheet 8-bit I2c And Smbus I/o Port

Manufacturer: onsemi

Overview: CAT9554, CAT9554A 8-bit I2C and SMBus I/O Port with Interrupt.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

The CAT9554 and CAT9554A are CMOS devices that provide 8−bit parallel input/output port expansion for I2C and SMBus patible 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/SMBus−patible serial interface.

Key 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 allows up to 16 of devices (eight CAT9554 and eight CAT9554A) to be connected on the same bus. Features.
  • 400 kHz I2C Bus Compatible (Note 1).
  • 2.3 V to 5.5 V Operation.
  • Low Sta.

Similar Datasheet

Brand Logo Part Number Description Manufacturer
Catalyst Semiconductor Logo CAT9554A 8-Bit I2C and SMBus I/O Port Catalyst Semiconductor
Catalyst Semiconductor Logo CAT9554 8-Bit I2C and SMBus I/O Port Catalyst Semiconductor

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