The 2 Channel Logic Level Converter for I2C and UART is a compact bi-directional voltage converter that translates signals between 3.3V TTL and 5V TTL logic levels across two independent channels, designed for projects that need to safely connect a 5V microcontroller such as an Arduino Uno to a 3.3V sensor, module, or display using either I2C or UART communication. This 2 channel logic level converter matches the signal count of the two most common two-wire protocols exactly — I2C uses SDA and SCL (two wires), and UART uses TX and RX (two wires) — so this module provides exactly the number of channels needed for either protocol without unused channels taking up board space.
The i2c bi directional logic level converter’s more compact footprint compared to the 4-channel variant makes it a better fit for tight breadboard builds and small project enclosures where every millimeter of space matters. The logic level converter’s bi-directional operation translates signals in both directions on each channel simultaneously — needed because I2C SDA and UART lines alternate between sending and receiving, and a one-way converter would only work in one direction, breaking communication from the lower-voltage device back to the higher-voltage device.
The i2c logic level converter’s 3.3V to 5V operating range covers both sides of the conversion without an external power supply needed for each voltage — simply connect the 3.3V rail and 5V rail already present in the project to the appropriate sides of the bi directional converter board. StemVolt offers quality electronics modules for makers and students.
Related Product:
Features:
- 2 channels match I2C exactly (SDA+SCL) or UART (TX+RX)
- More compact than 4-channel for tight breadboard and enclosure builds
- Bi-directional on each channel — translates both send and receive directions
- 3.3V and 5V TTL support — no external voltage source needed
Technical Specifications:
Applications:
- I2C connection between 5V Arduino and 3.3V OLED display
- Maker connects Arduino Uno UART to 3.3V GPS module safely
- 2 channel logic level converter with ESP32 sensor
- Compact breadboard build with Raspberry Pi 3.3V to 5V Arduino UART
Package Includes:
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1 x 2 Channel Logic Level Converter for I2C & UART
Ashish Tiwari –
Original product received from trusted STEM store.
Manish Pandey –
Impressed with the quality
Sanjay Chauhan –
Protective packaging, COD availability, and responsive customer support made the purchase worry-free.
Arjun Khanna –
Compact design and reliable voltage translation made it perfect for college and embedded projects.
Vikas Mishra –
2 Channel logic level converter worked flawlessly for I2C and UART communication between devices.
Sandeep Nair –
Hassle-free delivery experience