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    PCA9546 4-Channel I2C Multiplexer Module – STEMMA QT / Qwiic Compatible (TCA9546A Compatible) Robotics Bangladesh
    • PCA9546 4-Channel I2C Multiplexer Module – STEMMA QT / Qwiic Compatible (TCA9546A Compatible) Robotics Bangladesh
    • PCA9546 4-Channel I2C Multiplexer Module – STEMMA QT / Qwiic Compatible (TCA9546A Compatible) Robotics Bangladesh

    PCA9546 4-Channel I2C Multiplexer Module – STEMMA QT / Qwiic Compatible (TCA9546A Compatible)

    RBD-4079

    This 4-channel I2C multiplexer module allows multiple I2C devices with the same fixed address to be connected to a single microcontroller. It selectively routes I2C communication to one of four downstream channels, making it suitable for sensor expansion in embedded systems, robotics, and prototyping projects.

    BDT 1,250
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    Description

    Short Description

    This 4-channel I2C multiplexer module allows multiple I2C devices with the same fixed address to be connected to a single microcontroller. It selectively routes I2C communication to one of four downstream channels, making it suitable for sensor expansion in embedded systems, robotics, and prototyping projects.

    Key Features

    • 4-channel I2C bus multiplexing

    • Compatible with PCA9546 and TCA9546A devices

    • Supports multiple same-address I2C devices

    • True I2C control with simple channel selection

    • STEMMA QT / Qwiic connector available and compatible

    • Adafruit library compatible

    Technical Specifications

    • IC Type: PCA9546 (TCA9546A compatible)

    • Function: I2C multiplexer / switch

    • Number of Channels: 4

    • Communication Interface: I2C

    • Default I2C Address: 0x70

    • Selectable I2C Address Range: 0x70 to 0x77 (via onboard jumpers)

    • Operating Voltage: 3.3V to 5V

    • Logic Level: 3.3V or 5V compatible

    • Onboard Regulator: 3.3V output, up to 500 mA

    • Connectors:

      • 1 x I2C input (JST-SH 4-pin)

      • 4 x I2C output ports (JST-SH 4-pin)

    • Additional Interface: 0.1 inch pin breakout

    • Mounting: PCB mounting holes

    Applications / Use Cases

    • Connecting multiple I2C sensors with identical addresses

    • Sensor expansion for microcontrollers and SBCs

    • Robotics and automation projects

    • Embedded system prototyping

    • Educational and laboratory setups

    Package Includes

    • 1 x PCA9546 4-channel I2C multiplexer module

    Notes / Warnings

    • QT cables are not included

    • Channel selection is controlled by writing a single byte over I2C

    • Ensure all connected devices operate within supported voltage levels

    • Address jumpers must be configured carefully to avoid bus conflicts

    This PCA9546-based I2C multiplexer module provides a clean and reliable solution for expanding I2C buses with multiple same-address devices. With STEMMA QT / Qwiic compatibility and broad library support, it integrates easily into a wide range of electronics and embedded projects.

    Product Details
    RBD-4079
    1 Item

    Specific References

    EAN13
    4079
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