| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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1,068 pcs
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1068 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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| SVHC Present |
The WCH CH343P is a versatile USB to serial converter IC designed to bridge USB buses with high-speed asynchronous serial ports. It is fully compatible with USB V2.0 and emulates standard serial ports, making it ideal for upgrading existing serial peripheral devices or adding extra serial ports via USB. The chip ensures full compatibility with serial port applications on Windows operating systems without requiring modifications.
Key features include hardware full-duplex serial communication with independent transmit and receive buffers, supporting baud rates from 50bps up to 6Mbps. It offers flexible data bit configurations (5, 6, 7, or 8 bits) and supports various parity options including even, odd, blank, mark, and none. The CH343P also supports common modem contact signals such as RTS, DTR, DCD, RI, DSR, and CTS, with hardware automatic flow control for CTS and RTS.
This chip supports half-duplex communication and provides a transmit status indication (TNOW) for RS485 switching. It can support RS232 interfaces through external level conversion components. The CH343P operates with USB-side voltages of 5V or 3.3V and offers independent I/O power supply options from 1.8V to 5V, with anti-backflow protection. It integrates power-on reset and a clock, eliminating the need for an external crystal oscillator. Available in SOP16, ESSOP10, and QFN16 lead-free packages, it is RoHS compliant.
The CH343P is suitable for applications requiring reliable USB to serial communication, such as industrial control, embedded systems, and data acquisition where legacy serial devices need to interface with modern USB-equipped computers.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
USB 2.0.
From 50bps to 6Mbps.
Yes, it supports CTS/RTS hardware flow control.
1.8V, 2.5V, 3.3V, and 5V.
QFN16_3X3, SOP16, and ESSOP10.
Yes, it has an internal clock source, eliminating the need for an external crystal.
Yes, it has a built-in unique ID used as a USB serial number.