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CH334-USB interface expansion module

Overview

CH344 is a USB bus adapter chip that realizes the function of converting USB to four asynchronous serial ports UART0/1/2/3. It is used to expand asynchronous serial ports for computers, or directly upgrade ordinary serial device or MCU to USB bus.

This project is based on the CH334R chip. The actual picture is as follows

in use. The module is connected to the computer USB port through the Type-C port. The four USB 2.0 ports on the module are used as expansion ports to connect peripherals such as mice.
Please note that this module uses bus power supply, and its maximum total current is 1A, that is, the total current of the four expansion ports cannot exceed 1A.
It has been verified and can be used immediately after power-on.

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2024-11-22 14:02:33

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