CH341T 2-in-1 USB to I2C / UART TTL Serial Port Module

The CH341T USB Serial Module is a compact, versatile 2-in-1 interface board that converts USB to I2C/IIC and UART TTL signals simultaneously. Supporting both 3.3V and 5V logic levels, it's an essential tool for embedded developers, electronics enthusiasts, and makers who need reliable communication between a PC and microcontrollers, sensors, or single-chip systems.

Key Features

Dual-protocol support: USB to I2C/IIC and USB to UART TTL in a single compact module
Dual voltage compatibility: Operates at 3.3V and 5V logic levels — works with a wide range of microcontrollers and peripherals
CH341T chipset: Industry-proven USB bridge chip for stable, high-performance serial communication
SMD components: Surface-mount design for a clean, professional build
Compact form factor: Measures just 18.2 × 34.9 mm and weighs 8.72 g — fits easily into any project enclosure
Plug-and-play USB connectivity: Simple USB interface, no external power supply required
Available in multiple quantities: Choose from 1 pc, 5 pcs, or 10 pcs to suit your project needs

Specifications

Chipset: CH341T
Interface: USB to I2C/IIC + UART TTL
Logic Voltage: 3.3V / 5V selectable
Dimensions: 18.2 × 34.9 mm
Weight: 8.72 g
Components: SMD
Quantity Options: 1 pc, 5 pcs, 10 pcs

Who Is This For?

This module is ideal for:

Arduino, Raspberry Pi, and ESP32/ESP8266 developers
Firmware engineers needing fast USB-to-serial bridging
Electronics students and hobbyists exploring I2C and UART communication
Anyone who needs a reliable single-chip serial downloader/programmer

Related Products You May Like

Learn more: EPA guidance on lithium-ion battery handling

Frequently Asked Questions

Q: What does the CH341T USB to I2C UART TTL module do?

A: The CH341T module acts as a USB bridge that converts USB signals from your computer into I2C/IIC and UART TTL serial protocols. This allows your PC to communicate directly with microcontrollers, sensors, EEPROM chips, and other embedded devices that use I2C or UART serial interfaces — making it a must-have tool for embedded development and firmware programming.

Q: Is this module compatible with both 3.3V and 5V devices?

A: Yes. The CH341T module supports both 3.3V and 5V logic levels, making it compatible with a wide range of microcontrollers and peripherals including Arduino (5V), Raspberry Pi (3.3V), ESP8266, ESP32, STM32, and many more. Simply select the appropriate voltage for your target device.

Q: Do I need special drivers to use this USB serial module?

A: The CH341T chip is widely supported and drivers are freely available for Windows, macOS, and Linux. In many cases, modern operating systems will recognize the device automatically. For guaranteed compatibility, downloading the latest CH341 driver from your OS's driver repository or the chipset manufacturer's site is recommended.

Q: What quantity options are available for this module?

A: This listing offers three quantity options to suit different needs: 1 pc for individual projects, 5 pcs for small-batch development, or 10 pcs for team use or prototyping at scale. Each unit includes SMD components and is ready to use.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.