CH423S
WCH (Nanjing Qinheng Microelectronics)Extended
-40℃~+85℃ 15mA 1MHz 30mA 3V~5V 400uA 8 Built-in LED driver I2C Interrupt Output Push-Pull、Open-drain SOP-28-300mil I/O Expanders ROHS
- Part id
- wch/CH423S
- Category
- I, O Expanders
- Package
- SOP-28-300mil
- Pins
- 28
- In stock
- 542 at JLCPCB (C111663)
Overview
The CH423S is an i, O Expander made by WCH (Nanjing Qinheng Microelectronics) in a SOP-28-300mil package with 28 pins. -40℃~+85℃ 15mA 1MHz 30mA 3V~5V 400uA 8 Built-in LED driver I2C Interrupt Output Push-Pull、Open-drain SOP-28-300mil I/O Expanders ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Pro:CH423S, from EasyEDA Pro) and its footprint (Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. 542 are in stock at JLCPCB (part C111663).
Symbol
Footprint
Pinout
28| Pin | Name | Type |
|---|---|---|
| 1 | IO5 | Unspecified |
| 2 | IO6 | Unspecified |
| 3 | IO7 | Unspecified |
| 4 | OC0 | Unspecified |
| 5 | OC1 | Unspecified |
| 6 | OC2 | Unspecified |
| 7 | OC3 | Unspecified |
| 8 | OC4 | Unspecified |
| 9 | SCL | Unspecified |
| 10 | SDA | Unspecified |
| 11 | GND | Unspecified |
| 12 | OC5 | Unspecified |
| 13 | OC6 | Unspecified |
| 14 | OC7 | Unspecified |
| 15 | OC8 | Unspecified |
| 16 | OC9 | Unspecified |
| 17 | OC10 | Unspecified |
| 18 | OC11 | Unspecified |
| 19 | OC12 | Unspecified |
| 20 | OC13 | Unspecified |
| 21 | OC14 | Unspecified |
| 22 | OC15 | Unspecified |
| 23 | IO0 | Unspecified |
| 24 | IO1 | Unspecified |
| 25 | VCC | Unspecified |
| 26 | IO2 | Unspecified |
| 27 | IO3 | Unspecified |
| 28 | IO4 | Unspecified |
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Questions
Is there a KiCad symbol and footprint for the CH423S?
Yes. The symbol is EasyEDA_Pro:CH423S and the footprint Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the CH423S?
SOP-28-300mil, with 28 pins. Its footprint is drawn on this page.
Where is the CH423S datasheet?
WCH (Nanjing Qinheng Microelectronics) publishes it: the Datasheet link on this page opens it.
Where can I order the CH423S?
JLCPCB lists it as part C111663, with 542 in stock; the sellers' links on this page open their listings.
What can replace the CH423S?
Parts like it in the library: the TCA8418RTW by Texas Instruments, the TCAL6416RTW by Texas Instruments, the CH422G by WCH (Nanjing Qinheng Microelectronics) and the TCA9536DGKR by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.