CH422G
WCH (Nanjing Qinheng Microelectronics)Extended
-40℃~+85℃ 1MHz 300mV 3V~5V 400uA 8 No Interrupt Output Push-Pull、Open-drain Reset function、Built-in LED driver SPI、I2C SOP-16 I/O Expanders ROHS
- Part id
- wch/CH422G
- Category
- I, O Expanders
- Package
- SOP-16
- Pins
- 16
- In stock
- 2,712 at JLCPCB (C57543)
Overview
The CH422G is an i, O Expander made by WCH (Nanjing Qinheng Microelectronics) in a SOP-16 package with 16 pins. -40℃~+85℃ 1MHz 300mV 3V~5V 400uA 8 No Interrupt Output Push-Pull、Open-drain Reset function、Built-in LED driver SPI、I2C SOP-16 I/O Expanders ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:CH422G, from EasyEDA) and its footprint (Package_SO:SOIC-16_3.9x9.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. 2,712 are in stock at JLCPCB (part C57543).
Symbol
Footprint
Pinout
16| Pin | Name | Type |
|---|---|---|
| 1 | IO4 | Unspecified |
| 2 | IO5 | Unspecified |
| 3 | IO6 | Unspecified |
| 4 | IO7 | Unspecified |
| 5 | SCL | Unspecified |
| 6 | SDA | Unspecified |
| 7 | GND | Unspecified |
| 8 | OC0 | Unspecified |
| 9 | OC1 | Unspecified |
| 10 | OC2 | Unspecified |
| 11 | OC3 | Unspecified |
| 12 | IO0 | Unspecified |
| 13 | IO1 | Unspecified |
| 14 | VCC | Unspecified |
| 15 | IO2 | Unspecified |
| 16 | IO3 | Unspecified |
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Questions
Is there a KiCad symbol and footprint for the CH422G?
Yes. The symbol is EasyEDA_Cloud:CH422G and the footprint Package_SO:SOIC-16_3.9x9.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the CH422G?
SOP-16, with 16 pins. Its footprint is drawn on this page.
Where is the CH422G datasheet?
WCH (Nanjing Qinheng Microelectronics) publishes it: the Datasheet link on this page opens it.
Where can I order the CH422G?
JLCPCB lists it as part C57543, with 2,712 in stock; the sellers' links on this page open their listings.
What can replace the CH422G?
Parts like it in the library: the TCA8418RTW by Texas Instruments, the TCAL6416RTW by Texas Instruments, the TCA9536DGKR by Texas Instruments and the CH423S by WCH (Nanjing Qinheng Microelectronics). Check their datasheets: a part that fits the footprint may still differ in its ratings.