CH340N vs CH340G Comparison
Detailed side-by-side comparison of CH340N by WCH 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 | CH340N | CH340G |
|---|---|---|
| Brand | WCH | WCH |
| Category | Interface ICs | Interface ICs |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $0.37 | $0.31 |
| Manufacturer | WCH (Nanjing Qinheng Microelectronics Co., Ltd.) | WCH (Nanjing Qinheng Microelectronics) |
| Function | 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 | — |
| Operating Temperature | -20 °C to +70 °C | -40 C to +85 C |
| Package | SOP-8 | SOP-16 (SOIC-16, 150 mil) |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | 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) |