USB to TTL Converter CH340

The USB to TTL Converter CH340 is a compact and reliable serial communication module that allows easy interfacing between a computer’s USB port and TTL-level serial devices. Powered by the popular CH340 USB-to-Serial chip, this module is widely used for programming, debugging, and communicating with microcontrollers such as Arduino, ESP8266, ESP32, STM32, and other TTL-based devices.

It provides stable data transmission and supports multiple baud rates, making it an essential tool for electronics development, prototyping, and embedded system projects.

Key Features

• Uses CH340 USB-to-TTL conversion chip

• Supports 3.3V and 5V TTL logic levels

• Easy plug-and-play USB interface

• Supports standard baud rates (up to 115200 and higher)

• RX and TX LEDs for communication status

• Compact, lightweight, and durable design

• Compatible with Windows, Linux, and macOS (driver required)

Technical Specifications

• Chipset: CH340

• Interface: USB to TTL (UART)

• Logic Voltage: 3.3V / 5V (model dependent)

• Pins: TXD, RXD, VCC, GND

• USB Type: USB-A or Micro USB (varies by model)

• Baud Rate: Up to 2 Mbps

• Operating System Support: Windows / Linux / macOS

Applications

• Programming ESP8266, ESP32, Arduino Pro Mini, and other MCUs

• USB to serial communication debugging

• Embedded system development

• IoT and automation projects

• Serial data logging and monitoring

• Educational and DIY electronics projects

Package Includes

• 1 × USB to TTL Converter CH340 Module