CJMCU-9548 TCA9548A I2C Multiplexer Breakout Board

CJMCU-9548 TCA9548A I2C Multiplexer Breakout Board

The CJMCU-9548 is a compact breakout board based on the TCA9548A I2C multiplexer IC. It allows you to connect up to 8 I2C devices with the same address on a single I2C bus — solving address conflicts in complex embedded projects.

Key Features

• Based on TCA9548A I2C multiplexer IC
• Expands 1 I2C bus into 8 independent channels
• Solves I2C address conflicts for identical sensors
• Compatible with 3.3V and 5V systems
• Compact purple PCB — easy to integrate
• Standard 2.54mm pin spacing

Specifications

• IC: TCA9548A (Texas Instruments)
• I2C Channels: 8
• Supply Voltage: 1.65V – 5.5V
• I2C Address: 0x70 – 0x77 (configurable)
• PCB Color: Purple

Applications

• Multiple OLED displays on one bus
• Multiple identical sensors (BME280, MPU6050, etc.)
• Arduino, ESP32, Raspberry Pi projects
• Complex I2C device management