

Overview
The USB3740B-AI9-TR is an analog Switches Special Purpose made by Microchip Technology in a QFN-10(1.6x2.1) package with 10 pins. -40℃~+85℃ 1 1.1GHz 3V~5.5V 5pF 5Ω SPDT USB QFN-10(1.6x2.1) Analog Switches - Special Purpose ROHS.
PCBKit's library has its KiCad symbol (Interface_USB:USB3740B-AI9, from KiCad's library) and its footprint (EasyEDA_Cloud:QFN-10_L2.1-W1.6-P0.50-TL, from EasyEDA), ready for a KiCad board. 19 are in stock at JLCPCB (part C626691). 1 open-source board in 1 repository on GitHub use it.
Symbol
Footprint
Parameters
9- -3dB Bandwidth
- 1.1GHz
- Applications
- USB
- Con
- 5pF
- Features
- ESD Protection
- Number of Channels
- 1
- Operating Temperature
- -40℃~+85℃
- Ron
- 5Ω
- Switch Circuit
- SPDT
- Voltage - Supply
- 3V~5.5V
Order codes
1- USB3740B-AI9-TRLCSC C626691
Pinout
10| Pin | Name | Type |
|---|---|---|
| 1 | DM_1 | Input/output |
| 2 | DP_1 | Input/output |
| 3 | OE_N | Input |
| 4 | S | Input |
| 5 | VDD | Power in |
| 6 | DP_2 | Input/output |
| 7 | DM_2 | Input/output |
| 8 | GND | Power in |
| 9 | DM | Input/output |
| 10 | DP | Input/output |
Open-source boards using it
All 1- 2 layers77.6 × 26.6 mm

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Is there a KiCad symbol and footprint for the USB3740B-AI9-TR?
Yes. The symbol is Interface_USB:USB3740B-AI9 and the footprint EasyEDA_Cloud:QFN-10_L2.1-W1.6-P0.50-TL, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the USB3740B-AI9-TR?
QFN-10(1.6x2.1), with 10 pins. Its footprint is drawn on this page.
Where is the USB3740B-AI9-TR datasheet?
Microchip Technology publishes it: the Datasheet link on this page opens it.
Where can I order the USB3740B-AI9-TR?
JLCPCB lists it as part C626691, with 19 in stock; the sellers' links on this page open their listings.
Which open-source boards use the USB3740B-AI9-TR?
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.