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PCA9537 - 4-bit I2C and SMBus low power I/O port

General Description

The PCA9537 is a 10-pin CMOS device that provides 4 bits of General Purpose parallel Input/Output (GPIO) expansion with interrupt and reset for I2C-bus/SMBus applications.

It was developed to enhance the NXP Semiconductors family of I2C-bus I/O expanders.

Key Features

  • 4-bit I2C-bus GPIO with interrupt and reset.
  • 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.
  • Active LOW reset input.
  • Low standby current.
  • Noise filter on SCL/SDA inputs.
  • No glitch on power-up.
  • Internal power-on reset.
  • 4 I/O pins that default to 4 inputs.
  • 0 Hz to 400 kHz clock frequency.
  • ESD prote.

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📁 Similar Datasheet

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Other Datasheets by NXP Semiconductors

Part Number Description
PCA9531 8-bit I2C LED dimmer
PCA9532 16-bit I2C LED dimmer
PCA9533 4-bit I2C LED dimmer
PCA9534 8-bit I2C and SMBus/ low power I/O port
PCA9535 16-bit SMBus

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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PCA9537 4-bit I2C-bus and SMBus low power I/O port with interrupt and reset Rev. 7 — 8 September 2021 Product data sheet COMPANY PUBLIC 1 General description The PCA9537 is a 10-pin CMOS device that provides 4 bits of General Purpose parallel Input/Output (GPIO) expansion with interrupt and reset for I2C-bus/SMBus applications. It 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 PCA9537 consists of a 4-bit Configuration register (input or output selection), 4-bit Input Port register, 4-bit Output Port register and a 4-bit Polarity Inversion register (active HIGH or active LOW operation).