The CH340G is a highly popular and cost-effective USB to Serial (TTL UART) interface chip. It enables microcontrollers and other serial-based devices to easily communicate with a computer via USB. Widely used in Arduino boards, development kits, and embedded systems, the CH340G offers stable, fast, and easy USB connectivity.

Key Features:

• USB to Serial UART full-duplex communication
• Compatible with Windows, macOS, and Linux operating systems
• Easy integration with Arduino, ESP8266, ESP32, STM32, and more
• High-speed data transfer with built-in buffering and flow control
• Minimal external components required for implementation

Specifications:

• Chip Model: CH340G
• Function: USB to TTL UART Converter
• Data Rate: Up to 12 Mbps (maximum)
• Supported Baud Rates: 50 bps to 2 Mbps (typical use cases)
• Operating Voltage: 3.3V to 5V (with onboard regulator)
• USB Interface: USB 2.0 Full-Speed (12 Mbps)
• UART Signals: TXD, RXD, RTS, CTS
• Driver Support: Windows XP/7/8/10/11, macOS, Linux
• Package Type: SOP-16 (Small Outline Package)
• Current Consumption: ~10mA typical during operation

Applications:

• Arduino programming and debugging
• Serial communication with microcontrollers
• USB interface for embedded systems
• Prototyping and hardware development

Datasheet