CH340C
WCH
Needs validationmedium risk
CH340C is a same-series SOP-16 USB-serial candidate, but pinout, clock network, and temp range need review.
Best Alternatives to CH340G
CH340G alternatives should be reviewed as interface IC substitutions, not simple passive swaps. Same-series CH340C and CH340B are candidates, but pinout and clocking must be checked.
AI replacement insight
Electrical riskmedium
Voltage matches, temp may not.
Package riskmedium
SOP-16 matches, pinout unknown.
Firmware riskmedium
USB ID/driver behavior needs check.
Sourcing risklow
Kept WCH parts are Active.
Can it be replaced directly?
Direct replacement for CH340G should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Start with CH340C, then verify pinout, clock circuit, driver behavior, and temperature range.
Main risk
Pinout and clock-source differences can break a CH340G board.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | CH340G | CH340C | CH340B | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOP-16 | SOP-16 | SOP-16 | SOP-16 — same package text; CH340B: same package text | |
| Pinout | 16 pins, G pinout | 16 pins, C pinout unknown | 16 pins, B pinout unknown | 16 pins, C pinout unknown / 16 pins, B pinout unknown — must verify pins; CH340B: must verify pins | |
| Interface | USB 2.0 UART | USB 2.0 serial | USB 2.0 Full-Speed UART | USB 2.0 serial / USB 2.0 Full-Speed UART — same role; CH340B: same listed role | |
| Voltage | 3.3V / 5V | 3.3V / 5V | 3.3V / 5V | 3.3V / 5V — same listed range; CH340B: same listed range | |
| Temperature | -40C to 85C | -20C to 70C | -20C to 70C | -20C to 70C — lower temp range; CH340B: lower temp range |
Application & sourcing insights
Questions & answers
Verified drop-in options for CH340G are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.