PCF8574P I2C I/O Expander IC – Add More Inputs & Outputs Easily

Expand Your Microcontroller with the PCF8574P I2C I/O Expander

The PCF8574P I2C I/O Expander IC from NXP is the perfect solution for anyone looking to add more digital inputs or outputs to their Arduino, Raspberry Pi, or other microcontroller board. With its easy-to-use I2C interface, this 8-bit remote I/O expander makes it simple to control LEDs, read switches, or connect sensors, all while saving microcontroller pins.

Key Features of the PCF8574P

• Provides 8 additional digital I/O pins per IC
• Uses standard I2C bus (SCL, SDA) for simple two-wire communication
• Multiple PCF8574P chips can be connected on the same I2C bus for even more inputs and outputs
• 3 address pins allow you to connect up to 8 devices for a total of 64 extra I/O pins
• Interrupt output function for efficient detection of input pin changes
• Compatible with breadboards and protoboards (16-pin DIP package)
• Low power consumption – ideal for battery-powered projects

Technical Data

• Operating Voltage: 2.5V – 6V
• Maximum I2C Clock Frequency: 100kHz
• Package: 16-pin Dual In-Line (DIP), easy for prototyping
• Manufacturer: NXP
• Manufacturer Part Number: PCF8574P

Easy Integration for Everyday Projects

Great for home automation, classroom projects, or DIY electronics, the PCF8574P makes expanding your project easy. Address each IC for hassle-free scaling and use with Arduino libraries or similar platforms.

For step-by-step setup, refer to the official PCF8574P datasheet and start coding right away with the convenient Arduino library.

What’s Included

• 1 x PCF8574P I2C I/O Expander IC (16-pin DIP)