CH340C vs CH340G Comparison
Detailed side-by-side comparison of CH340C by NI and CH340G 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 | CH340G |
|---|---|---|
| Brand | NI | WCH |
| Category | Interface ICs | Interface ICs |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $0.34 | $0.31 |
| Product Type | USB to UART Bridge Controller IC | USB to UART Bridge Controller |
| USB Standard | 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 | -40 C to +85 C |
| Maximum Baud Rate | 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 | TXD, RXD, CTS, RTS, DTR, DSR, DCD, RI |
| Package | SOP-16 | SOP-16 (SOIC-16, 150 mil) |
| 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 | — |
| Manufacturer | Nanjing Qinheng Microelectronics Co., Ltd. (WCH) | WCH (Nanjing Qinheng Microelectronics) |
| USB Specification | — | USB 2.0 Full-Speed (12 Mbps) |
| Supply Voltage (VCC) | — | 3.3 V to 5 V |
| IO Logic Level | — | 3.3 V or 5 V (matches VCC) |
| Operating Baud Rate | — | 50 bps to 2 Mbps |
| Clock Source | — | External 12 MHz crystal required |
| Storage Temperature | — | -40 C to +125 C |
| Maximum VCC | — | 6.5 V (absolute max) |
| IO Pin Voltage Range | — | -0.5 V to VCC + 0.5 V |
| RS-232 Assistant Mode | — | Yes (R232 pin enables internal inverter) |