CH340G vs CH340N 比較
詳細並排比較 CH340G 由 WCH 與 CH340N 由 WCH. 比較關鍵規格、電氣參數、封裝、生命週期狀態、價格與供貨情況，以找出最符合您設計需求的元件。
規格比較
| 參數 | CH340G | CH340N |
|---|---|---|
| 品牌 | WCH | WCH |
| 類別 | Interface ICs | Interface ICs |
| 生命週期狀態 | 啟用中 | 啟用中 |
| Product Type | USB to UART Bridge Controller | — |
| Manufacturer | WCH (Nanjing Qinheng Microelectronics) | WCH (Nanjing Qinheng Microelectronics Co., Ltd.) |
| USB Specification | USB 2.0 Full-Speed (12 Mbps) | — |
| Supply Voltage (VCC) | 3.3 V to 5 V | 3.3 V or 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 | — |
| Clock Source | External 12 MHz crystal required | — |
| 工作溫度 | -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 | — |
| 封裝 | SOP-16 (SOIC-16, 150 mil) | SOP-8 |
| 安裝類型 | Surface Mount | Surface Mount |
| RS-232 Assistant Mode | Yes (R232 pin enables internal inverter) | — |
| RoHS 狀態 | Compliant | Compliant |
| 功能 | — | USB 2.0 to UART serial bridge |
| USB Standard | — | USB 2.0 Full-Speed (12 Mbps) |
| 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 |
| Driver Support | — | Windows, macOS, Linux (CDC-ACM or vendor INF) |