Converter USB-UART CH343 - USB type A plug - Waveshare 21442

The converter is based on the CH343 chip . It enables communication between USB and UART interfaces. It is used to exchange data between a computer and a microcontroller. It ensures stable information transfer and is compatible with many operating systems. It is powered with the voltage of 5 V or 3.3 V (selection with a jumper). The version is equipped with a USB type A connector.

Converter USB-UART CH343 - USB type A plug - Waveshare 21442 .

Converter pins .

• VCC - output voltage 5 V or 3.3 V (jumper selection)
• GND - ground
• TXD - UART transmitter pin (connected to MCU.RDX)
• RDX - UART receiver pin (connected to MCU.TXD)
• RTS # - Request to Send signal of UART interface (connects to MCU.CTS)
• CTS # - Clear to Send signal of UART interface (connects to MCU.RTS)

• Based on CH343 chip: Supports higher data rate (up to 6Mbps).
• Compatible with operating systems: Mac, Linux, Android, Windows 7/8 / 8.1 / 10/11.
• Built-in resettable fuse, transient voltage choke. The module has overcurrent, anti-overvoltage and antistatic protections, improving shock resistance. Provides stable and secure communication.
• Built-in 3.3V and 5V TTL level switch to select TTL communication level.
• Support for 3.3V / 5V output (the module is powered by USB, and the jumper on the board should be properly shorted to 3.3V or 5V).

USB-UART converter CH343 - Waveshare 21442 .

Detailed dimensions of the module .

• Developer: Waveshare
• Manufacturer's model number: 21442
• Product type: USB-UART converter
• Control system: CH343
• Data transfer rate: 50 bps to 6 Mbps
• USB: type A
• Built-in diodes indicating: PWR power supply, and work in RXD and TXD modes

• USB-UART CH343 converter - USB type A plug - Waveshare 21442: 1 pc.
• 6-pin cable: 1 pc.

• Manufacturer's website
• Product Wiki page
• Catalog note for the CH343 chip
• CH343 driver for Windows
• CH343 driver for MacOS