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5pcs 2 Channel IIC I2C Logic Level Converter Module 5V to 3.3V Arduino

The 2 Channel IIC I2C Level Converter bridges 5V and 3.3V systems, enabling efficient and stable communication between different voltage devices, perfect for a range of serial applications

5pcs 2 Channel IIC I2C Logic Level Converter Module 5V to 3.3V Arduino - Main image
$2.99 $4.9 In stock

Category: DC to DC Converters

2 Channel IIC I2C Level Converter Module Key Features:

  • Versatile Conversion: Two-channel bidirectional conversion between high-voltage (5V) and low-voltage (3.3V) logic.
  • One-Way Conversion Support: Facilitates 2 channels of high-voltage logic to low-voltage logic conversion.
  • Breadboard Compatibility: Can be directly plugged into a breadboard for easy use.
  • Serial Port Communication: Enables direct communication between 5V and 3.3V levels on the serial port.
  • High Baud Rate: Supports stable communication at up to 28800bps.
  • Broad Compatibility: Suitable for bidirectional conversion of UART, IIC, 1-wire, SPI, and other bus signals between 3V and 5V levels.

Compatibility Connections of 2 Channel IIC I2C:

  • AVCC: Connects to 5V system power.
  • ASCL/ASDA: Connects to 5V system SCL/SDA.
  • AGND: Connects to 5V system GND.
  • BVCC: Connects to 3V system power.
  • BSCL/BSDA: Connects to 3V system SCL/SDA.
  • BGND: Connects to 3V system GND.

Application Range:

  • Ideal for serial communication between 5V and 3.3V microcontrollers.
  • Useful for 3.3V serial downloaders communicating with 5V MCU serial ports.
  • Facilitates communication between 5V MCUs and 3.3V application modules.

Common applications for I2C include:

  • Reading Hardware Monitors: Ideal for interfacing with system hardware to monitor various parameters like temperature, voltage, and fan speeds.
  • Sensor Communication: Facilitates data transfer between microcontrollers and a wide range of sensors, ensuring compatibility between different voltage levels.
  • Real-Time Clock Interfaces: Essential for interfacing with real-time clock modules that require level shifting for accurate timekeeping and data logging.
  • Actuator Control: Useful in robotic applications or systems where actuators need to be controlled by a microcontroller operating at a different voltage.
  • DACs and ADCs Interaction: Enables communication with digital-to-analog converters (DACs) and analog-to-digital converters (ADCs) in audio applications, signal processing, and more.
  • Serial Data Transfer to/from Sensors: Streamlines data transfer processes in complex systems involving multiple sensors, ensuring data integrity and system reliability.
  • EEPROM Programming: Supports programming of EEPROMs in various electronics, allowing for efficient data storage and retrieval.
  • Polling/Receiving Sensor Data: Enhances capabilities in systems that require regular polling of sensors or need to receive data from multiple sensors, maintaining stable operation across different voltage levels.

Wiring Instructions:

  • HV: Connect to 5V power supply.
  • LV: Connect to 3.3V power supply.
  • GND: Common ground for both power supplies.
  • RXI/RXO: Input 5V TTL, output 3.3V TTL.
  • TXI/TXO: Two-way conversion between 3.3V TTL input/output and 5V TTL input/output.
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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Thomas ★★★★★

These little boards work perfectly for connecting a 5V Arduino to 3.3V sensors. The two-channel bidirectional conversion is exactly what I needed, and they’re compact enough to fit into tight breadboard setups.

Eli ★★★★★

Finally found a proper logic level shifter that actually works both ways without glitching my sensor array. The two-channel design let me connect both my GPS and display at the same time with a single module. Solderless jumper wires made testing connections incredibly quick.

Emily ★★★★★

The bidirectional conversion is the real selling point here—I can shift signals both ways without rewiring anything, and the two channels handled my I2C clock and data lines cleanly. Five modules in the pack means I’ve got spares for future projects, which is a nice bonus.