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PCF8574A - Remote 8-Bit I/O Expander

General Description

This 8-bit input/output (I/O) expander for the two-line bidirectional bus (I2C) is designed for 2.5-V to 6-V VCC operation.

The PCF8574A device provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock (SCL), serial data (SDA)].

Key Features

  • Low Standby-Current Consumption of 10 μA Max.
  • I2C to Parallel-Port Expander.
  • Open-Drain Interrupt Output.
  • Compatible With Most Microcontrollers.
  • Latched Outputs With High-Current Drive Capability for Directly Driving LEDs.
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II 2.

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Full PDF Text Transcription for PCF8574A (Reference)

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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community PCF8574A SCPS069F – JULY 2001 – REVISED NOVEMBER 2015 PCF8574A Remote 8-Bit I/O Expan...

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9F – JULY 2001 – REVISED NOVEMBER 2015 PCF8574A Remote 8-Bit I/O Expander for I2C Bus 1 Features • Low Standby-Current Consumption of 10 μA Max • I2C to Parallel-Port Expander • Open-Drain Interrupt Output • Compatible With Most Microcontrollers • Latched Outputs With High-Current Drive Capability for Directly Driving LEDs • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II 2 Applications • Telecom Shelters: Filter Units • Servers • Routers (Telecom Switching Equipment) • Personal Computers • Personal Electronics • Industrial Automation • Products with GPIO-Limited Processors 1 3 Description This 8-bit input/output

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