CH340N vs CH340C Comparison
Detailed side-by-side comparison of CH340N by WCH and CH340C by NI. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Specification Comparison
| Parameter | CH340N | CH340C |
|---|---|---|
| Brand | WCH | NI |
| Category | Interface ICs | Interface ICs |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $0.37 | $0.34 |
| Manufacturer | WCH (Nanjing Qinheng Microelectronics Co., Ltd.) | Nanjing Qinheng Microelectronics Co., Ltd. (WCH) |
| Function | USB 2.0 to UART serial bridge | — |
| USB Standard | USB 2.0 Full-Speed (12 Mbps) | USB 2.0 Full-Speed (12 Mbps) |
| Supply Voltage (VCC) | 3.3 V or 5 V | — |
| Internal 3.3 V LDO Output (V3) | ~50 mA available for external load | — |
| UART Logic Levels | 3.3 V or 5 V (matches VCC) | — |
| Maximum Baud Rate | 2 Mbps | 2 Mbps |
| Supported Baud Rates | 50 bps to 2 Mbps | — |
| MODEM Signals | RTS, CTS supported | — |
| External Crystal | 12 MHz | — |
| Operating Temperature | -20 °C to +70 °C | -20 C to +70 C |
| Package | SOP-8 | SOP-16 |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | Compliant | Compliant |
| Driver Support | Windows, macOS, Linux (CDC-ACM or vendor INF) | Windows 7/8/10/11, Linux (kernel CDC-ACM), macOS |
| Product Type | — | USB to UART Bridge Controller IC |
| Supply Voltage | — | 3.3 V or 5 V (mode selected by V3 pin) |
| Suspend Current | — | 50 uA (typical) |
| Active Supply Current | — | 7 mA (typical, full-speed traffic) |
| On-Chip Oscillator | — | Yes - 12 MHz internal (no external crystal required) |
| UART Signals | — | TXD, RXD, RTS, CTS, DTR, DSR, DCD, RI |
| MSL Level | — | [DATA_NEEDED: MSL moisture sensitivity level] |