PCA9548A I2C 8 Channel Mux Module

The PCA9548A I2C 8 Channel Multiplexer Module is an I2C bus expansion board that allows a single microcontroller to communicate with up to eight separate I2C devices or buses. It is especially useful when multiple I2C devices share the same address and cannot operate together on a single bus. The module uses the PCA9548A/TCA9548A multiplexer IC to selectively route communication between the master controller and connected sensors or peripherals. It supports voltage translation, multiple address configurations, and high-speed I2C communication, making it ideal for sensor networks, embedded systems, robotics, and automation projects.

Technical Specifications:

• IC Used: PCA9548A / TCA9548A I2C Multiplexer
• Number of Channels: 8 I2C channels
• Operating Voltage: 2.3V to 5.5V
• I2C Speed Support: Up to 400 kHz
• Selectable I2C Address Range: 0x70 to 0x77 using A0, A1, A2 pins

Features:

• Expands one I2C bus into 8 separate channels
• Allows connection of multiple same-address I2C devices
• Supports 3.3V and 5V systems
• Built-in reset pin for reliable operation
• Compact PCB with clearly labeled pins

Applications:

• Multi-sensor I2C projects
• Robotics and automation systems
• Arduino, ESP32, and Raspberry Pi interfacing
• OLED and LCD display expansion
• Industrial and embedded communication systems