TCA9548A I2c Multiplexer

🔹 TCA9548A I2C Multiplexer CJMCU-9548 – 1-to-8 I²C Bus Splitter Module

The TCA9548A I2C Multiplexer Module (CJMCU-9548) allows one microcontroller (like Arduino, ESP32, or Raspberry Pi) to communicate with up to 8 I²C devices with the same address by multiplexing the I²C bus. This makes it ideal for setups that use multiple identical sensors or displays.

✅ Features:

• I²C multiplexer – 1 master to 8 selectable slave channels

• Compatible with 3.3V and 5V logic levels

• Select channels using I²C commands (no need for extra GPIO pins)

• Breakout board design – easy to use with Arduino or other microcontrollers

• Allows use of multiple same-address I²C devices (e.g., multiple OLEDs or sensors)

• Power indicator LED

⚙️ Specifications:

• Chipset: TCA9548A

• Operating Voltage: 1.8V to 5V

• I²C Address Range: 0x70 to 0x77 (configurable via address pins A0–A2)

• Communication Interface: I²C

• Number of Channels: 8

• Mounting Holes: 4 for easy installation

• Module Size: Approx. 25mm × 25mm

• PCB Color: Purple (CJMCU type)

📦 Package Includes:

• 1 × TCA9548A I2C Multiplexer Module (CJMCU-9548)

💡 Applications:
✔️ Multiple I²C devices with the same address
✔️ Sensor array systems
✔️ Multi-display projects (OLED/LCD)
✔️ Robotics and automation systems
✔️ Advanced IoT devices