Datasheet4U Logo Datasheet4U.com

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.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
PCF8574A Remote 8-bit I/O expander NXP
PCF8574 Remote 8-bit I/O expander NXP
PCF8570 256 x 8-bit static low-voltage RAM NXP
PCF8570C 128 x 8 Bit / 256 x 8 Bit Static Ram Philips
PCF8571 128 x 8 Bit / 256 x 8 Bit Static Ram Philips

Other Datasheets by Texas Instruments

Part Number Description
PCF8574 Remote 8-Bit I/O Expander
PCF8574N Remote 8-Bit I/O Expander
PCF8575 Remote16-BIT I2C AND SMBus I/O Expander
PCF8575C Remote 16-Bit I2C AND SMBus Low-Power I/O Expander

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.

View original datasheet text
Product Folder Sample & Buy Technical Documents Tools & Software Support & Community PCF8574A SCPS069F – 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 (I/O) expander for the two-line bidirectional bus (I2C) is de