CH340N

@@ -0,0 +1,55 @@+# CH340N++**Unknown** · USB Converters · SOP-8++CH340N from Unknown, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | UD+ | bidirectional | USB D+ data line. Connect directly to the USB bus D+; do not add a series resistor. Internal pull-up and full USB 2.0 full-speed transceiver are integrated. |+| 2 | UD- | bidirectional | USB D- data line. Connect directly to the USB bus D-; do not add a series resistor. |+| 3 | GND | power_in | Common ground. Connect directly to the USB bus ground. |+| 4 | RTS# | output | MODEM Request-To-Send output, active low (software-controllable polarity). Only MODEM handshake line brought out on the SOP-8 CH340N. |+| 5 | VCC | power_in | Positive supply input. Supports 5V (4.0-5.3V) or 3.3V (3.1-3.6V) operation. Requires a 0.1uF decoupling capacitor. In 3.3V mode, tie VCC to V3 (pin 8). |+| 6 | TXD | output | UART serial data output. Idle-high in normal (non-IrDA) mode. Baud rates 50 bps to 2 Mbps; transmit baud error <1.8% on CH340N (internal oscillator). |+| 7 | RXD | input | UART serial data input. Has software-controllable internal pull-up and pull-down resistors. Should idle high. |+| 8 | V3 | power_out | Internal 3.3V regulator node. In 5V operation, connect a 0.1uF decoupling capacitor to GND. In 3.3V operation, tie directly to VCC (pin 5) and feed 3.3V externally. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Unknown |+| Package | SOP-8 |+| Category | Interface |+| Pins | 8 |++## Ordering variants++- `CH340N`+- `CH340NCH340G`+- `CH340NCH340C`+- `CH340NCH340B`+- `CH340NCH340K`+- `CH340NCH340E`+- `CH340NCH340X`+- `CH340NCH340T`+- `CH340NCH340R`++## CAD (KiCad official)++- Symbol: `CH340N`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Unknown datasheet](docs/ch340n-datasheet.pdf) (10 pp, sha256 `6a6922d3c4de2d4f`, retrieved 2026-08-17, tier: lcsc)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/ch340n-datasheet.pdf)

@@ -0,0 +1,34 @@+{+  "slug": "ch340n",+  "version": "0.1.0",+  "type": "component",+  "description": "Unknown USB Converters, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "interface",+    "ch340n"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "ch340n.kicad_sym",+    "ch340n.kicad_mod",+    "ch340n.glb",+    "ch340n.step",+    "ch340n.lbr",+    "docs/hero.png",+    "docs/ch340n-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file