8-Channel 3.3V↔5V I2C UART SPI TTL Bidirectional Logic Level Converter

8-Channel Bidirectional Logic Level Converter Module (3.3V ↔ 5V, I2C/UART/SPI/TTL)

This module allows safe and reliable voltage level conversion between different logic systems, such as 3.3V and 5V devices. It supports multiple communication protocols including I2C, UART, SPI, and TTL, making it ideal for Arduino, Raspberry Pi, ESP32, STM32, and other microcontroller projects.

Important: This is a logic level converter, not a power converter. You must connect both 3.3V and 5V power sources.

Features:

• 8-channel bi-directional logic level shifting between high and low voltage logic.
• Supports voltage ranges from 1.8V to 6V.
• Enables two-way communication between 3.3V and 5V systems.
• Compact size: 28mm x 27.5mm.
• Compatible with IIC, UART, SPI, and TTL interfaces.

Connection Guide (example for 3.3V ↔ 5V conversion):

• Connect VCCA to 3.3V power supply.
• Connect VCCB to 5V power supply.
• Connect GND to ground.
• When 3.3V signal enters Ax, corresponding Bx outputs 5V logic.
• When 5V signal enters Bx, corresponding Ax outputs 3.3V logic.

Perfect for communication between 5V Arduino boards and 3.3V devices such as sensors, displays, and logic circuits.