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Crystal-less USB-UART bridge
| Part number | CH340C USB to Serial |
|---|---|
| Category | Integrated Circuits › I/O Expander & Bus ICs |
| Package | DIP-16 |
| Pins | 16 |
CH340C USB to Serial pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | GND | ground | |
| 2 | TXD | output | |
| 3 | RXD | input | |
| 4 | V3 | passive | |
| 5 | UD+ | bidirectional | |
| 6 | UD- | bidirectional | |
| 7 | NC | nc | |
| 8 | NC | nc | |
| 9 | ~CTS | input | |
| 10 | ~DSR | input | |
| 11 | ~RI | input | |
| 12 | ~DCD | input | |
| 13 | ~DTR | output | |
| 14 | ~RTS | output | |
| 15 | R232 | input | |
| 16 | VCC | power |
Schematic symbol and footprint
Schematic symbol
Footprint: DIP-16 — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.