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PCA9554

Part Number	PCA9554
Manufacturer	NXP
Description	8-bit I2C and SMBus I/O port
Published	Mar 22, 2005
Detailed Description	PCA9554; PCA9554A 8-bit I2C-bus and SMBus I/O port with interrupt Rev. 10 — 8 November 2017 Product data sheet 1. Ge...
Datasheet	PCA9554 PDF File

Overview

PCA9554; PCA9554A 8-bit I2C-bus and SMBus I/O port with interrupt Rev.
10 — 8 November 2017 Product data sheet 1.
General description The PCA9554 and PCA9554A are 16-pin CMOS devices that provide 8 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and were developed to enhance the NXP Semiconductors family of I2C-bus I/O expanders.
The improvements include higher drive capability, 5 V I/O tolerance, lower supply current, individual I/O configuration, 400 kHz clock frequency, and smaller packaging.
I/O expanders provide a simple solution when additional I/O is needed for ACPI power switches, sensors, push buttons, LEDs, fans, and so on.
The PCA9...

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