CH340N vs CH340G 对比
详细并排对比 CH340N 出自 WCH 和 CH340G 出自 WCH。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 | CH340N | CH340G |
|---|---|---|
| 品牌 | WCH | WCH |
| 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） | $0.37 | $0.31 |
| Manufacturer | WCH (Nanjing Qinheng Microelectronics Co., Ltd.) | WCH (Nanjing Qinheng Microelectronics) |
| 功能 | USB 2.0 to UART serial bridge | — |
| USB Standard | USB 2.0 Full-Speed (12 Mbps) | — |
| Supply Voltage (VCC) | 3.3 V or 5 V | 3.3 V to 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 | — |
| Supported Baud Rates | 50 bps to 2 Mbps | — |
| MODEM Signals | RTS, CTS supported | — |
| External Crystal | 12 MHz | — |
| 工作温度 | -20 °C to +70 °C | -40 C to +85 C |
| 封装 | SOP-8 | SOP-16 (SOIC-16, 150 mil) |
| 安装类型 | Surface Mount | Surface Mount |
| RoHS 状态 | Compliant | Compliant |
| Driver Support | Windows, macOS, Linux (CDC-ACM or vendor INF) | — |
| Product Type | — | USB to UART Bridge Controller |
| USB Specification | — | USB 2.0 Full-Speed (12 Mbps) |
| 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 |
| 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) |