PCF8574A I2C Port Expander

PCF8574A I2C Port Expander IC chip is an 8-bit input/output (I/O) port expander which will allow you to add another 8-bit bi-directional port to your microcontroller. Very useful when you are running out of ports. Can be used to drive leds, LCD screens etc.

The PCF8574A provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock (SCL), serial data (SDA)] and is designed for 2.5-V to 6-V VCC operation.

The device features an 8-bit quasi-bidirectional I/O port (P0–P7), including latched outputs with high-current drive capability for directly driving LEDs.

PCF8574AN Pinout

  • IC Function:8-bit I/O Expander
  • Supply Voltage Range:2.5V to 6V
  • Operating Temperature Range:-40°C to +85°C
  • Digital IC Case Style:DIP
  • No. of Pins:16


PCF8574AN Datasheet

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PCF8574A I2C Port Expander

  • £1.62

  • Ex Tax: £1.35

Texas Instruments

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Tags: PCF8574, I2C, Port, Expander, input, output, i2c, bi-directional, PCF8574AN, ic, chip, DIP, 16, pins, DIP-16, Texas Instruments