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PCA9554A - 8-bit I2C and SMBus I/O port

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.

Key Features

  • Operating power supply voltage range of 2.3 V to 5.5 V.
  • 5 V tolerant I/Os.
  • Polarity Inversion register.
  • Active LOW interrupt output.
  • Low standby current.
  • Noise filter on SCL/SDA inputs.
  • No glitch on power-up.
  • Internal power-on reset.
  • 8 I/O pins which default to 8 inputs.
  • 0 Hz to 400 kHz clock frequency NXP Semiconductors PCA9554; PCA9554A 8-bit I2C-bus and SMBus I/O port with interrupt.
  • ESD protection exceeds 2000 V HBM per JESD22-A114 a.

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Other Datasheets by NXP Semiconductors

Part Number Description
PCA9554 8-bit I2C and SMBus I/O port
PCA9550 2-bit I2C LED driver
PCA9551 8-bit I2C LED driver
PCA9552 16-bit I2C LED driver
PCA9553 4-bit I2C LED driver

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.

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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.