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CH340S, in 3D

CH340S

WCH (Nanjing Qinheng Microelectronics)

100uA 3.3V、5V 7mA USB 2.0 USB to printer port SOP-28-300mil USB Converters ROHS

Extended
DatasheetJLCPCBLCSCwch/CH340S
Category
USB Converters
Package
SOP-28-300mil
Pins
28

Overview

The CH340S is a USB Converter made by WCH (Nanjing Qinheng Microelectronics) in a SOP-28-300mil package with 28 pins. 100uA 3.3V、5V 7mA USB 2.0 USB to printer port SOP-28-300mil USB Converters ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:CH340S, from EasyEDA) and its footprint (Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. 7 are in stock at JLCPCB (part C109467).

Symbol

NOS#1RSTI2SIN#3AFD#4ERR#5PEMP6ACK#7SLCT8V39UD+10UD-11GND12XI13XO14D015D116D217D318D419D520D621D722PRT#23C34124STB#25INI#26BUSY27VCC28
EasyEDA_Cloud:CH340SFrom EasyEDA

Footprint

12345678910111213141516171819202122232425262728
Package_SO:SOIC-28W_7.5x17.9mm_P1.27mmFrom KiCad's library

Parameters

7
Applications Function
USB to printer port
Current - Supply
7mA
Features
Low-power mode；Power-on reset
Operating Temperature
-40℃~+85℃
Quiescent Supply Current
100uA
USB Protocol
USB 2.0
Voltage - Supply
3.3V

Order codes

1

Pinout

28
The pins of the CH340S
PinNameType
1NOS#Unspecified
2RSTIUnspecified
3SIN#Unspecified
4AFD#Unspecified
5ERR#Unspecified
6PEMPUnspecified
7ACK#Unspecified
8SLCTUnspecified
9V3Unspecified
10UD+Unspecified
11UD-Unspecified
12GNDUnspecified
13XIUnspecified
14XOUnspecified
15D0Unspecified
16D1Unspecified
17D2Unspecified
18D3Unspecified
19D4Unspecified
20D5Unspecified
21D6Unspecified
22D7Unspecified
23PRT#Unspecified
24C341Unspecified
25STB#Unspecified
26INI#Unspecified
27BUSYUnspecified
28VCCUnspecified

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A live frame, for any web page
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A picture
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A picture that opens the part, for a README
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Questions

Is there a KiCad symbol and footprint for the CH340S?

Yes. The symbol is EasyEDA_Cloud:CH340S and the footprint Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the CH340S?

SOP-28-300mil, with 28 pins. Its footprint is drawn on this page.

Where is the CH340S datasheet?

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

Where can I order the CH340S?

JLCPCB lists it as part C109467, with 7 in stock; the sellers' links on this page open their listings.

What can replace the CH340S?

Parts like it in the library: the CH376S by WCH (Nanjing Qinheng Microelectronics), the CH341A by WCH (Nanjing Qinheng Microelectronics), the CH375B by WCH (Nanjing Qinheng Microelectronics) and the CH341B by WCH (Nanjing Qinheng Microelectronics). Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

8