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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
    BDT 1,250 BDT 1,250 BDT 1,250 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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