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CAT9554A - 8-Bit I2C and SMBus I/O Port

Download the CAT9554A datasheet PDF. This datasheet also covers the CAT9554 variant, as both devices belong to the same 8-bit i2c and smbus i/o port family and are provided as variant models within a single manufacturer datasheet.

General Description

The CAT9554 and CAT9554A are CMOS devices that provide 8-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.

Key Features

  • I 400kHz I2C bus compatible.
  • I 2.3V to 5.5V operation I Low stand-by current I 5V tolerant I/Os I 8 I/O pins that default to inputs at power-up I High drive capability I Individual I/O configuration I Polarity inversion register I Active low interrupt output I Internal power-on reset I No glitch on power-up I Noise filter on SDA/SCL inputs I Cascadable up to 8 devices I Industrial temperature range I RoHS-compliant 16-lead SOIC and TSSOP, and.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (CAT9554_CatalystSemiconductor.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number CAT9554A
Manufacturer Catalyst Semiconductor
File Size 305.02 KB
Description 8-Bit I2C and SMBus I/O Port
Datasheet download datasheet CAT9554A Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
www.DataSheet4U.com CAT9554, CAT9554A 8-bit I2C and SMBus I/O Port with Interrupt FEATURES I 400kHz I2C bus compatible* I 2.3V to 5.5V operation I Low stand-by current I 5V tolerant I/Os I 8 I/O pins that default to inputs at power-up I High drive capability I Individual I/O configuration I Polarity inversion register I Active low interrupt output I Internal power-on reset I No glitch on power-up I Noise filter on SDA/SCL inputs I Cascadable up to 8 devices I Industrial temperature range I RoHS-compliant 16-lead SOIC and TSSOP, and DESCRIPTION The CAT9554 and CAT9554A are CMOS devices that provide 8-bit parallel input/output port expansion for I2C and SMBus compatible applications.