CH344Q USB to Quad TTL Serial Module 4-way serial UART multi

Date:2024-11-21 Views:

a) About

The LC USB to four TTL serial port module is developed based on the CH344Q chip, which can convert one USB interface into four UART serial ports. It has a Type-C 5V DC input, built-in LED indicator light, a 500mA fuse on the input board, and supports overcurrent protection. It uses PH2.0 horizontal patch terminals and has the characteristics of overcurrent protection, high performance, low power consumption, and low cost.

b) View

①Front view

②Side view

③Reverse image

c) Functional Features

Supports USB to four-way UART conversion
The output terminal adopts PH2.0 horizontal patch terminal
Equipped with power indicator light and four-way UART signal indicator light
Input end board mounted 500mA fuse, supporting overcurrent protection

d) Introduction and Explanation

Board size：45*60mm/12 g

Interface Introduction

①　USB port
②　500mA fuse
③　Serial port
④　Power indicator light
⑤　Chip: CH344Q
⑥　Serial port indicator light

Parameter：

Input voltage: 5V DC
Input interface type: USB Type-C
Output type: TTL UART serial port, a total of four channels
Output terminal specification: PH2.0 horizontal patch terminal
Overcurrent protection: 500mA fuse
Chip model: CH344Q
Indicator lights: power indicator light, four-way UART signal indicator light

e) Instructions for use

1. Install USB drivers on the computer;
（Official driver download website ：https://www.wch.cn/downloads/USBMSER_exe.html）
2. Connect the input end to the computer USB port, and connect the TX and RX of the output end with jumper caps. At this time, the LED power indicator light will light up;

3. At this point, open the USB device viewer or the built-in device manager on the computer, which will display information about the USB device and four COM ports

4. Open the serial debugger, select one of the serial port numbers, choose the appropriate baud rate, open the serial port and send the data. The window will receive the data without packet loss, as shown in the following figure:

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