CH446X

{
  "slug": "ch446x",
  "version": "0.1.0",
  "type": "component",
  "description": "WCH(南京沁恒) Analog Switches, Multiplexers, LQFP-44(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface",
    "ch446x",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ch446x.kicad_sym",
    "ch446x.kicad_mod",
    "ch446x.glb",
    "ch446x.step",
    "ch446x.lbr",
    "docs/hero.png",
    "docs/ch446x-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ch446x-hero.glb",
    "ch446x-hero.overlay.json",
    "ch446x-etched.glb"
  ],
  "component": {
    "mpn": "CH446X",
    "manufacturer": "WCH(南京沁恒)",
    "package": "LQFP-44(10x10)",
    "pin_count": 44,
    "category": "Interface",
    "subcategory": "Analog Switches, Multiplexers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589040402330894336",
    "parts": {
      "symbol": "ch446x.kicad_sym",
      "footprint": "ch446x.kicad_mod",
      "model_3d": "ch446x-hero.glb",
      "model_3d_plain": "ch446x-etched.glb",
      "model_3d_step": "ch446x-etched.step",
      "model_3d_step_plain": "ch446x.step",
      "lbr": "ch446x.lbr"
    },
    "distributor_links": {
      "lcsc": "C3018882"
    },
    "distributor_check": {
      "checked_at": "2026-10-20T21:27:35Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "38",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply; voltage must be greater than or equal to GND."
      },
      {
        "number": "12",
        "name": "GND",
        "type": "power_in",
        "description": "Common ground and digital signal reference, 0 V."
      },
      {
        "number": "16",
        "name": "VEE",
        "type": "power_in",
        "description": "Negative supply; voltage must be less than or equal to GND."
      },
      {
        "number": "41",
        "name": "RST",
        "type": "input",
        "description": "External manual reset input, active high; a high level clears all latches to 0 so all analog switches are open."
      },
      {
        "number": "36",
        "name": "DAT",
        "type": "input",
        "description": "Serial data input and switch data input; when used as switch data, high turns the switch on and low turns it off."
      },
      {
        "number": "14",
        "name": "STB",
        "type": "input",
        "description": "Strobe input, active high; its high pulse generates the ACT pulse that writes DAT into the latch selected by the address."
      },
      {
        "number": "34",
        "name": "CS/CK",
        "type": "input",
        "description": "Serial clock input, active on the rising edge; seven rising edges shift in the 7-bit address."
      },
      {
        "number": "31",
        "name": "X0",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "30",
        "name": "X1",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "29",
        "name": "X2",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "28",
        "name": "X3",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "27",
        "name": "X4",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "26",
        "name": "X5",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "3",
        "name": "X6",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "4",
        "name": "X7",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "5",
        "name": "X8",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "6",
        "name": "X9",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "7",
        "name": "X10",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "8",
        "name": "X11",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "25",
        "name": "X12",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "24",
        "name": "X13",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "1",
        "name": "X14",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "2",
        "name": "X15",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "33",
        "name": "X16",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "35",
        "name": "X17",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "37",
        "name": "X18",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "39",
        "name": "X19",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "17",
        "name": "X20",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "15",
        "name": "X21",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "13",
        "name": "X22",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "11",
        "name": "X23",
        "type": "passive",
        "description": "Analog signal input/output, X port of the 5x24 switch matrix."
      },
      {
        "number": "43",
        "name": "Y0",
        "type": "passive",
        "description": "Analog signal input/output, Y port of the 5x24 switch matrix."
      },
      {
        "number": "18",
        "name": "Y1",
        "type": "passive",
        "description": "Analog signal input/output, Y port of the 5x24 switch matrix."
      },
      {
        "number": "19",
        "name": "Y2",
        "type": "passive",
        "description": "Analog signal input/output, Y port of the 5x24 switch matrix."
      },
      {
        "number": "42",
        "name": "Y3",
        "type": "passive",
        "description": "Analog signal input/output, Y port of the 5x24 switch matrix."
      },
      {
        "number": "20",
        "name": "Y4",
        "type": "passive",
        "description": "Analog signal input/output, Y port of the 5x24 switch matrix."
      },
      {
        "number": "9",
        "name": "NC",
        "type": "unconnected",
        "description": "Unused pin; must not be connected."
      },
      {
        "number": "10",
        "name": "NC",
        "type": "unconnected",
        "description": "Unused pin; must not be connected."
      },
      {
        "number": "21",
        "name": "NC",
        "type": "unconnected",
        "description": "Unused pin; must not be connected."
      },
      {
        "number": "40",
        "name": "NC",
        "type": "unconnected",
        "description": "Unused pin; must not be connected."
      },
      {
        "number": "22",
        "name": "NC",
        "type": "unconnected",
        "description": "Unused pin; must not be connected."
      },
      {
        "number": "23",
        "name": "NC",
        "type": "unconnected",
        "description": "Unused pin; must not be connected."
      },
      {
        "number": "32",
        "name": "NC",
        "type": "unconnected",
        "description": "Unused pin; must not be connected."
      },
      {
        "number": "44",
        "name": "NC",
        "type": "unconnected",
        "description": "Unused pin; must not be connected."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet lists the X0～X23 pin numbers as a grouped list without an explicit per-pin mapping. Th; The datasheet lists the Y0～Y4 pin numbers as a grouped list without an explicit per-pin mapping. The; The datasheet does not give a KiCad electrical type for VDD and VEE; power_in was assigned because t"
        ],
        "pages_sent": 9,
        "cost_usd": 0.0733,
        "at": "2026-10-20T21:23:43"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589040402330894336",
        "pages": 9,
        "sha256": "a9328434d05a6080",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 44,
        "described": 44,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ch446x.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          12.0,
          12.0,
          1.5
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "81aae6270b5c742bed79a8a35e9adf7fbed97c42e341e6b25ab20c1783b93b5d",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ch446x-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          12.0,
          12.0,
          1.5
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "a8089d5f24180771207d48aa672a00ed12b9940b01dc091385275bba2d242233",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}