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PCA9539 - 16-bit I2C and SMBus low power I/O port

General Description

The PCA9539; PCA9539R is a 24-pin CMOS device that provides 16 bits of General Purpose parallel Input/Output (GPIO) expansion with interrupt and reset for I2C-bus/SMBus applications and was developed to enhance the NXP Semiconductors family of I2C-bus I/O expanders.

Key Features

  • 16-bit I2C-bus GPIO with interrupt and reset.
  • Operating power supply voltage range of 2.3 V to 5.5 V (3.0 V to 5.5 V for PCA9539PW/Q900 and PCA9539RPW/Q900).
  • 5 V tolerant I/Os NXP Semiconductors PCA9539; PCA9539R 16-bit I2C-bus and SMBus low power I/O port with interrupt and reset.
  • Polarity inversion register.
  • Active LOW interrupt output.
  • Active LOW reset input.
  • Low standby current.
  • Noise filter on SCL/SDA inputs.
  • No glitch on power-up.
  • Inter.

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Other Datasheets by NXP Semiconductors

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PCA9539R 16-bit I2C and SMBus low power I/O port
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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.

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PCA9539; PCA9539R 16-bit I2C-bus and SMBus low power I/O port with interrupt and reset Rev. 9 — 8 November 2017 Product data sheet 1. General description The PCA9539; PCA9539R is a 24-pin CMOS device that provides 16 bits of General Purpose parallel Input/Output (GPIO) expansion with interrupt and reset for I2C-bus/SMBus applications and was developed to enhance the NXP Semiconductors family of I2C-bus I/O expanders. I/O expanders provide a simple solution when additional I/O is needed for ACPI power switches, sensors, push buttons, LEDs, fans, etc. The PCA9539; PCA9539R consists of two 8-bit configuration (input or output selection), input, output and polarity inversion (active HIGH or active LOW operation) registers.