6-Piece PCF8574T I2C IO Expander Module Red Board For Arduino Ideal For Home Automation And Sensor Networks 8-Bit Bidirectional GPIO With I2C Bus 100kHz To 400kHz And Cascade Support Up To 64 IO
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Six-Piece PCF8574T I2C GPIO Expander Board for Arduino Red
✔️ 8-Bit bidirectional GPIO, I2C 100kHz to 400kHz, up to 64 IO
✅ 2.5V-6V supply range and -40°C to +85°C operating temperature
✅ Up to 64 IO achievable with 8-module cascade
✅ 3-bit hardware address (A0-A2); 8 distinct addresses 0x20-0x27
✅ INT pin outputs active low on input change; sleep current ≤ 1.8µA
✅ Includes 4×2.54mm pin header for direct connections
✔️ 8-Bit bidirectional GPIO, I2C 100kHz to 400kHz, up to 64 IO
The PCF8574T 8-Bit I/O Expander module adds extra GPIO pins via I2C, ideal for home automation and sensor networks. It supports cascade up to 64 IO and works with popular platforms like Arduino, Raspberry Pi, and STM32.
✅ 8-Bit bidirectional GPIO expansion via I2C interface (100kHz-400kHz)✅ 2.5V-6V supply range and -40°C to +85°C operating temperature
✅ Up to 64 IO achievable with 8-module cascade
✅ 3-bit hardware address (A0-A2); 8 distinct addresses 0x20-0x27
✅ INT pin outputs active low on input change; sleep current ≤ 1.8µA
✅ Includes 4×2.54mm pin header for direct connections
💡 What is a PCF8574T I2C IO expander used for in hobby electronics?
This handy module adds extra GPIO via I2C and scales IO count for bigger projects. - expands 8-bit GPIO via I2C interface - cascade up to 64 IO with multiple modules - compatible with Arduino, Raspberry Pi, STM32 - handy for home automation and sensor networks ✝️