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CH334U, in 3D

CH334U

WCH (Nanjing Qinheng Microelectronics)

-40℃~+85℃ 0.4mA 3.3V、5V 4 480Mbps 85mA Hub USB 2.0 QSOP-28-150mil USB HUB Controllers ROHS

Extended
DatasheetJLCPCBLCSCwch/CH334U
Category
USB HUB Controllers
Package
QSOP-28-150mil
Pins
28

Overview

The CH334U is a USB HUB Controller made by WCH (Nanjing Qinheng Microelectronics) in a QSOP-28-150mil package with 28 pins. -40℃~+85℃ 0.4mA 3.3V、5V 4 480Mbps 85mA Hub USB 2.0 QSOP-28-150mil USB HUB Controllers ROHS.

PCBKit's library has its KiCad symbol (Interface_USB:CH334U, from KiCad's library) and its footprint (Package_SO:QSOP-28_3.9x9.9mm_P0.635mm, from KiCad's library), ready for a KiCad board. 1,697 are in stock at JLCPCB (part C5187524). 8 open-source boards in 7 repositories on GitHub use it.

Symbol

GND1XO2XI3DM4-4DP4+5DM3-6DP3+7DM2-8DP2+9DM1-10DP1+11LED3/SCL14DMU-15DPU+16PSELF19V520LED4/SDA22LED123LED224VDD3313RESET/CDP17VDD33_{LDO}21PWREN25OVCUR26
Interface_USB:CH334UFrom KiCad's library

Footprint

12345678910111213141516171819202122232425262728
Package_SO:QSOP-28_3.9x9.9mm_P0.635mmFrom KiCad's library

Parameters

10
Current - Supply
85mA
Data Rate
480Mbps
Features
ESD Protection
Memory Interface
I2C
Number of Channels
4
Operating Temperature
-40℃~+85℃
Quiescent Supply Current
0.4mA
USB Protocol
USB 2.0
Voltage - Supply
3.3V
type
Hub

Order codes

1

Pinout

28
The pins of the CH334U
PinNameType
1GNDPower in
2XOPassive
3XIPassive
4DM4-Input/output
5DP4+Input/output
6DM3-Input/output
7DP3+Input/output
8DM2-Input/output
9DP2+Input/output
10DM1-Input/output
11DP1+Input/output
12GNDPassive
13VDD33Power in
14LED3/SCLInput/output
15DMU-Input/output
16DPU+Input/output
17RESET/CDPInput
18NCNot connected
19PSELFInput
20V5Power in
21VDD33_{LDO}Power out
22LED4/SDAInput/output
23LED1Output
24LED2Output
25PWRENOutput
26OVCURInput
27NCNot connected
28GNDPassive

Open-source boards using it

All 8
  • 2 layers80 × 50 mmHUB CH334U PCB, the printed circuit board in 3D

    HUB CH334U PCB

    openwch/ch334

    Share the schematic and layout (KiCad) for DIY USB2.0 4-PORTS HUB with CH334U

    36 parts14
  • 2 layers119.4 × 67.3 mmAdapter, the printed circuit board in 3D

    Adapter

    liyuxuan3003/PrismGC

    基于ARM处理器的智能游戏机

    34 parts6
  • 2 layers40.6 × 27.9 mmCH334, the printed circuit board in 3D

    CH334

    nicola-strappazzon/CH334

    Basic projects of CH334U (HUB USB 2.0)

    16 parts1
  • 4 layers102 × 16.5 mmMoonHub, the printed circuit board in 3D

    MoonHub

    certainly1182/MoonHub

    37 partsGPL-3.0
  • 4 layers49.5 × 21.6 mmUSB Replug Dongle RevC1, the printed circuit board in 3D

    USB Replug Dongle RevC1

    gslee-dev/portpulse

    USB replug test dongle with KiCad hardware, CH552 firmware, and native C host

    38 partsMIT

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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
[![CH334U](https://pcbkit.io/embed/parts/wch/CH334U.jpg?size=s)](https://pcbkit.io/parts/wch/CH334U)

Questions

Is there a KiCad symbol and footprint for the CH334U?

Yes. The symbol is Interface_USB:CH334U and the footprint Package_SO:QSOP-28_3.9x9.9mm_P0.635mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the CH334U?

QSOP-28-150mil, with 28 pins. Its footprint is drawn on this page.

Where is the CH334U datasheet?

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

Where can I order the CH334U?

JLCPCB lists it as part C5187524, with 1,697 in stock; the sellers' links on this page open their listings.

Which open-source boards use the CH334U?

8 boards in 7 repositories on GitHub; the most starred are listed on this page, with their KiCad files.