CH341A USB Multi-Protocol Converter IC, SOP-28 Package
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Prices updated: 12 Oct 2026
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About this product
The CH341A is a USB bus converter chip that provides UART serial, parallel printer-port and synchronous serial (2-wire or 4-wire) interfaces over USB. It lets designers add USB connectivity to serial, parallel or synchronous devices. This SOP-28 version is the bare IC for building custom USB interface boards.
Specifications
- Host interface
- USB
- Supported modes
- UART, parallel/printer port, synchronous serial (2-wire or 4-wire)
- Package
- SOP-28
- Type
- Bare IC
Frequently asked questions
Does the PC need a driver to use it?
Yes. The host computer needs the WCH CH341 driver so that the device appears as a serial or parallel port.
Can I use the chip without building a PCB?
No. It is a bare IC and needs a PCB with a USB connector and the supporting components described in the WCH datasheet.
