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CH342F, in 3D

CH342F

WCH (Nanjing Qinheng Microelectronics)

-40℃~+85℃ 15mA 160uA 2 3.3V、5V 3Mbps USB 2.0 USB to serial QFN-24-EP(4x4) USB Converters ROHS

Extended
DatasheetJLCPCBLCSCwch/CH342F
Category
USB Converters
Package
QFN-24-EP(4x4)
Pins
25

Overview

The CH342F is a USB Converter made by WCH (Nanjing Qinheng Microelectronics) in a QFN-24-EP(4x4) package with 25 pins. -40℃~+85℃ 15mA 160uA 2 3.3V、5V 3Mbps USB 2.0 USB to serial QFN-24-EP(4x4) USB Converters ROHS.

PCBKit's library has its KiCad symbol (SparkFun-IC-Comm:CH342F, from Sparkfun-kicad) and its footprint (SparkFun-Semiconductor-Standard:QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm, from Sparkfun-kicad), ready for a KiCad board. 6,953 are in stock at JLCPCB (part C2841530). 3 open-source boards in 3 repositories on GitHub use it.

Symbol

RI01GND2UD+3UD-4VIO5V36VDD57VBUS8RST9CTS110RTS111RXD112TXD113DSR114DTR115DCD116RI117CTS018RTS019RXD020TXD021DSR022DTR023DCD024
SparkFun-IC-Comm:CH342FFrom Sparkfun-kicad

Footprint

25
SparkFun-Semiconductor-Standard:QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mmFrom Sparkfun-kicad

Parameters

9
Applications Function
USB to serial
Current - Supply
15mA
Data Rate
3Mbps
Features
Programmable baud rate；Wake-up function；Built-in clock generator；Hardware flow control support；Low-power mode；Power-on reset
Number of Channels
2
Operating Temperature
-40℃~+85℃
Quiescent Supply Current
160uA
USB Protocol
USB 2.0
Voltage - Supply
3.3V

Order codes

1

Pinout

25
The pins of the CH342F
PinNameType
1RI0Input
2GNDPower in
3UD+Input/output
4UD-Input/output
5VIOInput
6V3Power out
7VDD5Power in
8VBUSPower in
9RSTInput
10CTS1Input
11RTS1Output
12RXD1Input
13TXD1Output
14DSR1Input
15DTR1Output
16DCD1Input
17RI1Input
18CTS0Input
19RTS0Output
20RXD0Input
21TXD0Output
22DSR0Input
23DTR0Output
24DCD0Input
25GNDPower in

Open-source boards using it

All 3
  • 4 layers196.5 × 100 mmDonkeyDrift MUS4, the printed circuit board in 3D

    DonkeyDrift MUS4

    DonkeyDrift/Hardware

    Hardware for DonkeyDrifter

    263 partsApache-2.0
  • 2 layers41 × 32.2 mmUsb uart, the printed circuit board in 3D

    Usb uart

    absmach/synth

    Open-source circuit compiler for engineers and AI agents

    36 parts29Apache-2.0

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A live frame, for any web page
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A picture
<img src="https://pcbkit.io/embed/parts/wch/CH342F.jpg" alt="CH342F" width="1200" height="900">
A picture that opens the part, for a README
[![CH342F](https://pcbkit.io/embed/parts/wch/CH342F.jpg?size=s)](https://pcbkit.io/parts/wch/CH342F)

Questions

Is there a KiCad symbol and footprint for the CH342F?

Yes. The symbol is SparkFun-IC-Comm:CH342F and the footprint SparkFun-Semiconductor-Standard:QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the CH342F?

QFN-24-EP(4x4), with 25 pins. Its footprint is drawn on this page.

Where is the CH342F datasheet?

WCH (Nanjing Qinheng Microelectronics) publishes it: the Datasheet link on this page opens it.

Where can I order the CH342F?

JLCPCB lists it as part C2841530, with 6,953 in stock; the sellers' links on this page open their listings.

What can replace the CH342F?

Parts like it in the library: the CP2105-F01-GMR by Silicon Labs, the STUSB4500Q by STMicroelectronics, the AP33771DKZ by Diodes Incorporated and the CP2105-F01-GM by Silicon Labs. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the CH342F?

3 boards in 3 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

4