Product details
The PCF8574T I2C I/O Expansion Board Module is an 8-bit remote I/O expander that allows microcontrollers to expand their digital input/output pins using the I2C communication interface. It is based on the PCF8574T chip and is compatible with popular development boards such as Arduino, ESP32, ESP8266, and Raspberry Pi.
Using only two I2C pins (SDA and SCL), the module provides 8 additional GPIO pins. Up to 8 modules can be connected on the same I2C bus, allowing expansion up to 64 digital I/O pins.
Features
- Based on the PCF8574T 8-bit I2C I/O expander IC
- Adds 8 digital input/output pins using I2C communication
- Operates with only two signal lines: SDA and SCL
- Supports cascading of up to 8 modules on the same I2C bus
- Compatible with Arduino, ESP32, ESP8266, Raspberry Pi, and other microcontrollers
- On-board I2C connector and pin header for easy interfacing
- Low power consumption
- Compact and lightweight design
Specifications
- Product Name: PCF8574T I2C I/O Expansion Board Module
- IC Used: PCF8574T 8-bit I/O Expander
- Communication Interface: I2C (SDA, SCL)
- Operating Voltage: 3V – 5V DC
- Number of GPIO Pins: 8 Digital I/O Pins
- Maximum Expandable Modules: Up to 8 modules on a single I2C bus
- Total Expandable I/O: Up to 64 GPIO pins
- Logic Level Compatibility: 3.3V and 5V systems
- I2C Addressing: Configurable via address pins (A0, A1, A2)
- Communication Speed: Standard I2C bus speed
- On-board Connectors: I2C pin header and I2C cascading connector
- Compatible Boards: Arduino, ESP32, ESP8266, Raspberry Pi, STM32, and other I2C-enabled controllers
- Operating Temperature: -40°C to +85°C (IC specification)
- Dimensions (L × W × H): 48 mm × 16 mm × 15 mm
- Weight: Approximately 5 grams
- Package Includes: 1 × PCF8574T I2C I/O Expansion Board Module.
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