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CAT9554

Catalyst Semiconductor
Part Number CAT9554
Manufacturer Catalyst Semiconductor
Description 8-Bit I2C and SMBus I/O Port
Published Nov 21, 2006
Detailed Description www.DataSheet4U.com CAT9554, CAT9554A 8-bit I2C and SMBus I/O Port with Interrupt FEATURES I 400kHz I2C bus compatible*...
Datasheet PDF File CAT9554 PDF File

CAT9554
CAT9554

Overview
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.
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-compat...


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