PCF8574T I2C I/O Extension Board Module
Description:
PCF8574T I2C I/O Extension Board Module is a versatile and efficient I/O expander designed to extend the number of digital inputs and outputs in a system, using the I2C communication protocol. Based on the PCF8574T chip, this module provides an easy and cost-effective way to add more GPIO pins to a microcontroller or development board like Arduino, Raspberry Pi, or other I2C-compatible systems.Module is an excellent solution for applications where there is a need for additional inputs and outputs, such as when you're working with devices like sensors, LEDs, buttons, or relays, but have limited GPIO pins available on your primary controller. The PCF8574T enables you to interface with up to 8 digital I/O pins through only two I2C wires (SCL and SDA), making it ideal for simplifying the wiring in complex projects with many components.
Features:
1. I2C Communication Interface
2. 8 Digital I/O Pins
3. I/O Pin Expander for Microcontrollers
4. Low Power Consumption
5. Built-In Pull-up Resistors
6. Wide Voltage Range
7. Flexible I/O Configuration
8. Compact and Easy to Integrate
9. Multiple Module Support
10. Interrupt Capabilities (Optional)
Diagram:
Specifications:
| IC Type | PCF8574T |
| Communication Protocol | I2C (Inter-Integrated Circuit) |
| Number of I/O Pins | 8 Digital I/O Pins |
| Input Voltage Range | 2.5V to 6V |
| I2C Address | Default 0x20 |
| Operating Voltage | 3.3V or 5V |
| Maximum Clock Speed (I2C) | 400kHz |
| Operating Temperature | -40°C to +85°C |
| Dimensions | ~25mm x 20mm |
| Pin Header Type | 2.54mm pitch |
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