Overview
The CH445P is an analog Switches, Multiplexer made by WCH (Nanjing Qinheng Microelectronics) in a QFN-16(3x3) package with 17 pins. -40℃~+85℃ 1.5V~2.8V、2.9V~3.7V 1.8ns 2.5ns 2:1 3.5Ω 500MHz 9pF QFN-16(3x3) Analog Switches, Multiplexers ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:CH445P, from EasyEDA) and its footprint (EasyEDA_Cloud:QFN-16_L3.0-W3.0-P0.50-TL-EP1.7, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C2683595).
Symbol
Footprint
Parameters
10- Bandwidth
- 500MHz
- Con
- 9pF
- Features
- Bidirectional analog channel；Control interface integration
- Number of Channels
- 4
- Operating Temperature
- -40℃~+85℃
- Ron
- 3.5Ω
- Switch Circuit
- 2:1
- Turn-off time
- 1.8ns
- Turn-on time
- 2.5ns
- Voltage - Supply
- 2.9V~3.7V；1.5V~2.8V
Order codes
1- CH445PLCSC C2683595
Pinout
17| Pin | Name | Type |
|---|---|---|
| 1 | S2A | Unspecified |
| 2 | DA | Unspecified |
| 3 | S1B | Unspecified |
| 4 | S2B | Unspecified |
| 5 | DB | Unspecified |
| 6 | GND | Unspecified |
| 7 | DC | Unspecified |
| 8 | S2C | Unspecified |
| 9 | S1C | Unspecified |
| 10 | DD | Unspecified |
| 11 | S2D | Unspecified |
| 12 | S1D | Unspecified |
| 13 | EN# | Unspecified |
| 14 | VCC | Unspecified |
| 15 | IN | Unspecified |
| 16 | S1A | Unspecified |
| 17 | GND | Unspecified |
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<iframe src="https://pcbkit.io/embed/parts/wch/CH445P" title="CH445P in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/wch/CH445P.jpg" alt="CH445P" width="1200" height="900">[](https://pcbkit.io/parts/wch/CH445P)Questions
Is there a KiCad symbol and footprint for the CH445P?
Yes. The symbol is EasyEDA_Cloud:CH445P and the footprint EasyEDA_Cloud:QFN-16_L3.0-W3.0-P0.50-TL-EP1.7, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the CH445P?
QFN-16(3x3), with 17 pins. Its footprint is drawn on this page.
Where is the CH445P datasheet?
WCH (Nanjing Qinheng Microelectronics) publishes it: the Datasheet link on this page opens it.
Where can I order the CH445P?
JLCPCB lists it as part C2683595, with 0 in stock; the sellers' links on this page open their listings.
What can replace the CH445P?
Parts like it in the library: the CH444P by WCH (Nanjing Qinheng Microelectronics). Check their datasheets: a part that fits the footprint may still differ in its ratings.
