Adafruit PCA9546 4-Channel STEMMA QT / Qwiic I2C Multiplexer - TCA9546A Compatible

The Adafruit PCA9546 4-Channel I2C Multiplexer is a handy solution for managing multiple I2C devices with the same address, allowing up to 4 devices to be connected to a single microcontroller.

• Multiplexer functionality: Routes I2C commands to selected ports, enabling control of multiple devices with the same I2C address.
• PCA9546 chip: Works as a 4-channel I2C multiplexer, ideal for up to 4 same-addressed I2C devices (for 8 devices, check the 8-channel PCA9548 version).
• Addressable range: Default I2C address is 0x70, adjustable to 0x77 via jumpers.
• Connectivity: Features 1 input and 4 output JST SH 1mm connectors, plus breadboard breakout pins for additional flexibility.
• Onboard 3.3V 500mA regulator: Allows level shifting for 5V microcontrollers, enabling compatibility with 3V logic on all connected devices.
• Mounting holes included for easy integration into systems.
• Power indicator LED: Lets you know when the hub board is powered and operational.
• Compatible with Qwiic/STEMMA QT: Integrates seamlessly with other Adafruit Qwiic and STEMMA QT devices.
• Simple setup: Connect to your I2C bus, write a byte to select the output port, and start communicating with your devices.
• No cables or sensors included (available separately in the Adafruit shop).

This multiplexer simplifies the process of adding and managing multiple I2C devices, perfect for expanding your project with minimal wiring complexity.