CH340G vs CH340C 对比
详细并排对比 CH340G 出自 WCH 和 CH340C 出自 NI。对比关键规格、电气参数、封装、生命周期状态、价格和供货情况，以确定最适合您设计需求的元器件。
规格对比
| 参数 | CH340G | CH340C |
|---|---|---|
| 品牌 | WCH | NI |
| 分类 | Interface ICs | Interface ICs |
| 生命周期状态 | 有效 | 有效 |
| 库存状态 | 有库存 | 有库存 |
| 单价（USD） | $0.31 | $0.34 |
| Product Type | USB to UART Bridge Controller | USB to UART Bridge Controller IC |
| Manufacturer | WCH (Nanjing Qinheng Microelectronics) | Nanjing Qinheng Microelectronics Co., Ltd. (WCH) |
| 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 | — |
| UART Signals | TXD, RXD, CTS, RTS, DTR, DSR, DCD, RI | TXD, RXD, RTS, CTS, DTR, DSR, DCD, RI |
| Clock Source | External 12 MHz crystal required | — |
| 工作温度 | -40 C to +85 C | -20 C to +70 C |
| 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 | — |
| 封装 | SOP-16 (SOIC-16, 150 mil) | SOP-16 |
| 安装类型 | Surface Mount | Surface Mount |
| RS-232 Assistant Mode | Yes (R232 pin enables internal inverter) | — |
| RoHS 状态 | Compliant | Compliant |
| USB Standard | — | USB 2.0 Full-Speed (12 Mbps) |
| 电源电压 | — | 3.3 V or 5 V (mode selected by V3 pin) |
| 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) |
| MSL 等级 | — | [DATA_NEEDED: MSL moisture sensitivity level] |
| Driver Support | — | Windows 7/8/10/11, Linux (kernel CDC-ACM), macOS |