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PCA9574 - low voltage GPIO

General Description

The PCA9574 is a CMOS device that provides 8 bits of General Purpose parallel Input/Output (GPIO) expansion in low voltage processor and handheld battery powered mobile applications and was developed to enhance the NXP family of I2C-bus I/O expanders.

Key Features

  • 400 kHz I2C-bus serial interface NXP Semiconductors PCA9574 8-bit I2C-bus and SMBus, level translating, low voltage GPIO with reset and interrupt.
  • Compliant with I2C-bus Standard-mode (100 kHz).
  • Separate supply rails for core logic and I/O bank provides voltage level shifting.
  • 1.1 V to 3.6 V operation with level shifting feature.
  • Very low standby current: < 1 μA.
  • 8 configurable I/O pins that default to inputs at power-up.
  • Output.

📥 Download Datasheet

More Datasheets from NXP Semiconductors

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Full PDF Text Transcription for PCA9574 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for PCA9574. For precise diagrams, tables, and layout, please refer to the original PDF.

PCA9574 8-bit I2C-bus and SMBus, level translating, low voltage GPIO with reset and interrupt Rev. 6.0 — 31 May 2023 Product data sheet 1 General description The PCA9574 ...

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.0 — 31 May 2023 Product data sheet 1 General description The PCA9574 is a CMOS device that provides 8 bits of General Purpose parallel Input/Output (GPIO) expansion in low voltage processor and handheld battery powered mobile applications and was developed to enhance the NXP family of I2C-bus I/O expanders. The improvements include lower supply current, lower operating voltage of 1.1 V to 3.6 V, dual and separate supply rails to allow voltage level translation anywhere between 1.1 V and 3.6 V, 400 kHz clock frequency, and smaller packaging. Any of the eight I/O ports can be configured as an input or output independent of