CH340G

{
  "schema_version": 1,
  "type": "component",
  "slug": "ch340g",
  "title": "CH340G",
  "brief": "WCH Jiangsu Qin Heng USB Converters, SOP-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "ch340g"
  ],
  "component": {
    "mpn": "CH340G",
    "manufacturer": "WCH Jiangsu Qin Heng",
    "package": "SOP-16",
    "pin_count": 16,
    "category": "Interface",
    "subcategory": "USB Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/a3b2ca2c7638da2635df3f5b1d90bcc0.pdf",
    "parts": {
      "symbol": "ch340g.kicad_sym",
      "footprint": "ch340g.kicad_mod",
      "model_3d": "ch340g-etched.glb",
      "model_3d_plain": "ch340g.glb",
      "model_3d_step": "ch340g-etched.step",
      "model_3d_step_plain": "ch340g.step",
      "lbr": "ch340g.lbr"
    },
    "distributor_links": {
      "lcsc": "C14267"
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Common ground. Connect directly to the USB bus ground."
      },
      {
        "number": "2",
        "name": "TXD",
        "type": "output",
        "description": "Serial data output. Idle-high in normal UART mode. Drives external MCU RXD or an RS232/RS485 level shifter."
      },
      {
        "number": "3",
        "name": "RXD",
        "type": "input",
        "description": "Serial data input with controllable internal pull-up/pull-down. Should be high when idle. If R232 pin is high, an internal inverter is inserted (default low)."
      },
      {
        "number": "4",
        "name": "V3",
        "type": "power_in",
        "description": "Internal 3.3 V regulator node. At 5 V operation, connect a 0.1 uF decoupling capacitor to GND. At 3.3 V operation, tie V3 to VCC (both fed by external 3.3 V rail)."
      },
      {
        "number": "5",
        "name": "UD+",
        "type": "bidirectional",
        "description": "USB D+ data line. Connect directly to the USB bus D+; do NOT add a series resistor. Internal USB pull-up is built in."
      },
      {
        "number": "6",
        "name": "UD-",
        "type": "bidirectional",
        "description": "USB D- data line. Connect directly to the USB bus D-; do NOT add a series resistor."
      },
      {
        "number": "7",
        "name": "XI",
        "type": "input",
        "description": "Crystal oscillator input. Requires an external 12 MHz crystal between XI and XO with load capacitors (typ. 33 pF) to GND on each side."
      },
      {
        "number": "8",
        "name": "XO",
        "type": "output",
        "description": "Crystal oscillator output. Pairs with XI for the 12 MHz crystal reference."
      },
      {
        "number": "9",
        "name": "CTS#",
        "type": "input",
        "description": "MODEM handshake input: Clear To Send. Active low (or high if R232 auxiliary RS232 mode is enabled)."
      },
      {
        "number": "10",
        "name": "DSR#",
        "type": "input",
        "description": "MODEM handshake input: Data Set Ready. Active low (or high in auxiliary RS232 mode)."
      },
      {
        "number": "11",
        "name": "RI#",
        "type": "input",
        "description": "MODEM handshake input: Ring Indicator. Active low (or high in auxiliary RS232 mode)."
      },
      {
        "number": "12",
        "name": "DCD#",
        "type": "input",
        "description": "MODEM handshake input: Data Carrier Detect. Active low (or high in auxiliary RS232 mode)."
      },
      {
        "number": "13",
        "name": "DTR#",
        "type": "output",
        "description": "MODEM handshake output: Data Terminal Ready. Active low (or high in auxiliary RS232 mode). Doubles as a configuration input before USB enumeration (external 4.7 kΩ pull-down requests higher bus current in descriptor)."
      },
      {
        "number": "14",
        "name": "RTS#",
        "type": "output",
        "description": "MODEM handshake output: Request To Send. Active low (or high in auxiliary RS232 mode)."
      },
      {
        "number": "15",
        "name": "R232",
        "type": "input",
        "description": "Auxiliary RS232 mode enable. High enables auxiliary RS232 (inverts RXD input automatically and allows discrete-transistor RS232 conversion). Internal pull-down; sampled only once after power-on reset."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply input. Accepts 5 V (typ. 4.0-5.3 V) with V3 decoupled to GND via 0.1 uF, or 3.3 V (typ. 2.9-3.6 V) with V3 shorted to VCC. Requires a 0.1 uF decoupling capacitor."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/a3b2ca2c7638da2635df3f5b1d90bcc0.pdf",
        "pages": 10,
        "sha256": "6a6922d3c4de2d4f",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -4.445
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-16_3.9x9.9mm_P1.27mm@sha256:f9b5075740f7816c",
      "mark": "drawn"
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "WCH Jiangsu Qin Heng",
      "Package": "SOP-16",
      "Category": "Interface",
      "Pins": "16"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ch340g"
  ],
  "discovery_pitch": "CH340G (WCH Jiangsu Qin Heng) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ch340g.kicad_sym",
    "ch340g.kicad_mod",
    "ch340g.glb",
    "ch340g.step",
    "ch340g-etched.step",
    "ch340g.lbr",
    "docs/hero.png",
    "docs/ch340g-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "CH340GG",
      "kind": "packaging"
    },
    {
      "mpn": "CH340GC",
      "kind": "packaging"
    },
    {
      "mpn": "CH340GB",
      "kind": "packaging"
    },
    {
      "mpn": "CH340GN",
      "kind": "packaging"
    },
    {
      "mpn": "CH340GK",
      "kind": "packaging"
    },
    {
      "mpn": "CH340GE",
      "kind": "packaging"
    },
    {
      "mpn": "CH340GX",
      "kind": "packaging"
    },
    {
      "mpn": "CH340GT",
      "kind": "packaging"
    },
    {
      "mpn": "CH340GR",
      "kind": "packaging"
    }
  ]
}