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    PCA9306 Bidirectional I2C Bus/SMBus Voltage Level Converter Robotics Bangladesh
    • PCA9306 Bidirectional I2C Bus/SMBus Voltage Level Converter Robotics Bangladesh

    PCA9306 Bidirectional I2C Bus/SMBus Voltage Level Converter

    RBD-3540

    The PCA9306 Bidirectional I2C Bus/SMBus Voltage Level Converter is a versatile and compact dual-channel translator designed to bridge communication between devices operating at different voltage levels. It supports seamless bidirectional voltage translation between I2C or SMBus systems without the need for a direction control pin. Ideal for mixed-voltage applications, this module enables reliable communication across a wide voltage range—from 1.2V up to 5.5V—with minimal delay and high signal integrity.

    BDT 390
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    Description

    The PCA9306 Bidirectional I2C Bus/SMBus Voltage Level Converter is a versatile and compact dual-channel translator designed to bridge communication between devices operating at different voltage levels. It supports seamless bidirectional voltage translation between I2C or SMBus systems without the need for a direction control pin. Ideal for mixed-voltage applications, this module enables reliable communication across a wide voltage range—from 1.2V up to 5.5V—with minimal delay and high signal integrity.

    Whether you’re interfacing a 1.8V microcontroller with a 3.3V or 5V sensor, or isolating a slower I2C bus from a faster one, the CJMCU-9306 (PCA9306) is your go-to solution for hassle-free voltage level conversion in I2C and SMBus protocols.


    Key Features

    • Dual bidirectional channels for I2C (SCL/SDA) and SMBus lines

    • Wide voltage compatibility:

      • VREF1: 1.2V to 3.3V

      • VREF2: 1.8V to 5.5V

    • No direction pin needed – automatic bidirectional translation

    • Low ON-state resistance (RON): ~3.5Ω for minimal signal loss

    • Supports standard-mode, fast-mode, and fast-mode plus I2C devices

    • Supports hot-swapping and isolation by toggling the EN (Enable) pin

    • 5V tolerant I/O ports

    • Ultra-fast propagation delay: <1.5ns

    • High-impedance state when disabled (EN = LOW)

    • Flow-through pinout for easy PCB routing

    • Robust ESD protection:

      • 2000V HBM (Human Body Model)

      • 1000V CDM (Charged Device Model)


    Technical Specifications

    ParameterValue
    Input Voltage (VREF1)1.2V to 3.3V
    Output Voltage (VREF2)1.8V to 5.5V
    Supported ProtocolsI2C, SMBus
    Operating ModesStandard, Fast, Fast-mode Plus
    Propagation Delay<1.5ns
    ON-State Resistance (RON)~3.5Ω
    I/O Tolerance5V tolerant on all ports
    Enable Pin (EN)Controls connection between channels
    ProtectionESD >2000V HBM, >1000V CDM
    DimensionsCompact form factor for easy integration

    Applications

    • Voltage level translation between mixed-voltage I2C devices

    • Communication between 1.8V MCUs and 5V peripherals

    • Sensor interfaces in robotics and embedded systems

    • I2C/SMBus protocol level shifting for laptops, mobile devices, and industrial electronics

    • Isolating slow and fast I2C buses for robust communication


    Package Includes

    • 1 x PCA9306 Bidirectional I2C Level Converter Module (CJMCU-9306)


    Why Choose the PCA9306?

    With automatic direction sensing, excellent signal integrity, and support for a wide voltage range, the PCA9306 is the perfect choice for interfacing modern low-voltage microcontrollers with legacy or high-voltage I2C devices. Its plug-and-play simplicity and robust ESD protection make it an essential component for safe and reliable voltage translation in both hobbyist and professional electronics projects.


    Upgrade your voltage compatibility today—integrate the PCA9306 module into your I2C projects for efficient, safe, and automatic bidirectional level shifting!

    Product Details
    RBD-3540
    17 Items

    Specific References

    EAN13
    3540
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