jlamflux / CH340G Breakout USB-C

Loaded

0

4

Files

Schematic

PCB

Log InSign Up

Chat

Welcome to Flux

Treat Flux like your intern. Tell it what you'd like to build and it'll get to work. You can also ask it questions, brainstorm ideas, and teach it your preferences. Learn More

Explain this part
Write a part description
Describe each pin
Verify Part Details
Recommend similar parts
Check availability & lifecycle
​
Sign up to send
J1
New Comment
3
Can you check if I am missing any connections to J1. The application is for USB ...
jlamflux

jlamflux

@copilot Can you check if I am missing any connections to J1. The application is for USB to Serial using a CH340G. If I am not missing any connections, then please connect the unused pins to No Connect.
2y

copilot

From the netlist and components provided, it appears that the following pins on J1 are connected:
  • GND1, GND2, GND3, GND4
  • VBUS1, VBUS2, VBUS3, VBUS4
  • D1+, D1-
  • CC1, CC2
  • SHIELD (all 4 instances)
The CH340G's application of USB to Serial typically requires the following connections:
  • VBUS (to power)
  • GND
  • D+ and D- (for data transmission)
For a USB-C connector (like J1, with part number 1054500101), the following pins are typically used:
  • VBUSx
  • GNDx
  • D1+, D1-
  • SHIELD
  • CC1, CC2
Since your current connections match these requirements, it seems like you're not missing any required connections for a basic USB to Serial application using the CH340G.
The remaining pins on this USB-C connector (RX1-, RX1+, RX2-, RX2+, SBU1, SBU2, TX1-, TX1+, TX2-, TX2+) are not typically used in a USB to Serial application and can be left unconnected or connected to No Connect for clarity.
Please note that this does not account for any specific requirements your design might have outside of a basic USB to Serial application.
Here's the connections to No Connect for the unused pins:
  1. Connect J1:RX1- to No Connect.
  2. Connect J1:RX1+ to No Connect.
  3. Connect J1:RX2- to No Connect.
  4. Connect J1:RX2+ to No Connect.
  5. Connect J1:SBU1 to No Connect.
  6. Connect J1:SBU2 to No Connect.
  7. Connect J1:TX1- to No Connect.
  8. Connect J1:TX1+ to No Connect.
  9. Connect J1:TX2- to No Connect.
  10. Connect J1:TX2+ to No Connect.
2y
jlamflux

jlamflux

Yeah please wire the unused pins of J1 to no connect for me
2y

copilot

Sure, here's how to wire the unused pins of J1 to No Connect:
  1. Connect J1:RX1- to the NC net.
  2. Connect J1:RX1+ to the NC net.
  3. Connect J1:RX2- to the NC net.
  4. Connect J1:RX2+ to the NC net.
  5. Connect J1:SBU1 to the NC net.
  6. Connect J1:SBU2 to the NC net.
  7. Connect J1:TX1- to the NC net.
  8. Connect J1:TX1+ to the NC net.
  9. Connect J1:TX2- to the NC net.
  10. Connect J1:TX2+ to the NC net.
This will ensure that these pins are explicitly marked as not connected in your design.
2y
2
How do I connect my USB-C port to the CH340G IC?
jlamflux

jlamflux

@copilot How do I connect my USB-C port to the CH340G IC?
2y

copilot

Planning ...

2y

copilot

To connect your USB-C port to the CH340G IC, you first need the following components: a USB-C cable, a USB-C breakout board, the CH340G IC, and suitable connectors for your PCB (print -circuit board).
Here is one approach to make the connection:
  1. Using the USB-C cable, connect one end to the USB-C port on your device.
  2. Connect the other end of the USB-C cable to the USB-C breakout board. This board should convert the USB-C signals into signals compatible with the CH340G. Locate the D+ and D- signals on the breakout board.
  3. Connect the D+ and D- signals from the breakout board to the corresponding D+ (pin 3) and D- (pin 2) inputs on the CH340G IC.
Please refer to the specific datasheet for your version of the CH340G IC for precise pin descriptions, as connections may vary depending on the specific chip version. For the USB-C breakout board, also, make sure to refer to its specific datasheet to properly identify the D+ and D- signals.
Remember that the CH340G needs proper voltage supply, ground connections and also crystal circuit connected to work correctly as a USB to serial converter. You should ensure that all these connections are correctly applied (according to the information given on the CH340G datasheet).
It's important to notice that USB-C cables and ports support higher power delivery than other USB types. Ensure any device that you connect to the USB-C port is capable of handling the power it delivers.
The information provided does not specify if there is any direct device-to-device compatibility provided by the USB-C port and the CH340G IC, and some kind of interface or driver would be necessary for the IC to effectively 'read' and deal with the signals coming from the USB-C.
2y
4
VCC
F1
Y1
C6
Capacitance
20pF
R7
Resistance
1kΩ
C7
Capacitance
0.01uF
D1
C8
Capacitance
10uF
FUSE
R2
Resistance
2.1kΩ
VCC
D1+
RXD
R8
Resistance
1kΩ
R1
Resistance
2.1kΩ
C9
Capacitance
100nF
D1+
R3
Resistance
1kΩ
IC2
D1-
C5
Capacitance
20pF
C10
Capacitance
100nF
D1-

Reviews

  • Ground
    Ground
    A common return path for electric current. Commonly known as ground.
    jharwinbarrozo
    20.5M
  • Net Portal
    Net Portal
    Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
    jharwinbarrozo
    43.0M
  • Power Net Portal
    Power Net Portal
    Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
    jharwinbarrozo
    11.4M
  • Generic Resistor
    Generic Resistor
    A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Generic Capacitor
    Generic Capacitor
    A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Generic Inductor
    Generic Inductor
    A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
    jharwinbarrozo
    15.8k
  • Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
    natarius
  • RMCF0805JT47K0
    RMCF0805JT47K0
    General Purpose Thick Film Standard Power and High-Power Chip Resistor 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film Features: - RMCF – standard power ratings - RMCP – high power ratings - Nickel barrier terminations standard - Power derating from 100% at 70ºC to zero at +155ºC - RoHS compliant, REACH compliant, and halogen free - AEC-Q200 compliant
    jharwinbarrozo
    1.2M
  • 875105359001
    875105359001
    10 µF 16 V Aluminum - Polymer Capacitors Radial, Can - SMD 30mOhm 2000 Hrs @ 105°C #commonpartslibrary #capacitor #aluminumpolymer #radialcan
    jharwinbarrozo
    1.2M
  • CTL1206FYW1T
    CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric)
    jharwinbarrozo
    1.1M

CH340G Breakout USB-C

CH340G Breakout USB-C thumbnail
Custom CH340G Breakout

Properties

SUBLAYOUT

Pricing & Availability

Distributor

Qty 1

Digi-Key

$1.57–$3.57

LCSC

$1.20–$1.50

Mouser

$0.82–$0.90

Controls

Welcome 👋

Flux accelerates your PCB design with AI.

Create your account to start using this component and bring your ideas to life.

      Introducing AI Placement!
      AI Placement Demo

      AI-Powered Component Placement

      Let AI place your components intelligently. AI Placement analyzes your schematic and positions components for optimal routing, signal integrity, and board density.

      From Schematic to Layout in Seconds

      Skip the tedious manual placement. AI Placement generates a starting layout you can refine, saving hours of repetitive work on every new design.

      Works With Auto-Layout

      Pair AI Placement with Auto-Layout for a complete AI-driven PCB design flow — from component placement through trace routing, all with one click.

      Try it