CH340C vs CH340N Comparison
Detailed side-by-side comparison of CH340C by NI and CH340N by WCH. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Specification Comparison
| Parameter | CH340C | CH340N |
|---|---|---|
| Brand | NI | WCH |
| Category | Interface ICs | Interface ICs |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $0.34 | $0.37 |
| Product Type | USB to UART Bridge Controller IC | — |
| USB Standard | USB 2.0 Full-Speed (12 Mbps) | USB 2.0 Full-Speed (12 Mbps) |
| Supply Voltage | 3.3 V or 5 V (mode selected by V3 pin) | — |
| Operating Temperature | -20 C to +70 C | -20 °C to +70 °C |
| Maximum Baud Rate | 2 Mbps | 2 Mbps |
| 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 | — |
| Package | SOP-16 | SOP-8 |
| Mounting Type | Surface Mount | Surface Mount |
| MSL Level | [DATA_NEEDED: MSL moisture sensitivity level] | — |
| RoHS Status | Compliant | Compliant |
| Driver Support | Windows 7/8/10/11, Linux (kernel CDC-ACM), macOS | Windows, macOS, Linux (CDC-ACM or vendor INF) |
| Manufacturer | Nanjing Qinheng Microelectronics Co., Ltd. (WCH) | WCH (Nanjing Qinheng Microelectronics Co., Ltd.) |
| Function | — | USB 2.0 to UART serial bridge |
| 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) |
| Supported Baud Rates | — | 50 bps to 2 Mbps |
| MODEM Signals | — | RTS, CTS supported |
| External Crystal | — | 12 MHz |