74HC4051BQ

{
  "slug": "74hc4051bq",
  "version": "0.1.0",
  "type": "component",
  "description": "NXP Semicon Analog Switches, Multiplexers, DHVQFN-16-EP(2.5x3.5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface",
    "74hc4051bq",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "74hc4051bq.kicad_sym",
    "74hc4051bq.kicad_mod",
    "74hc4051bq.glb",
    "74hc4051bq.step",
    "74hc4051bq.lbr",
    "docs/hero.png",
    "docs/74hc4051bq-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "74hc4051bq-hero.glb",
    "74hc4051bq-hero.overlay.json",
    "74hc4051bq-etched.glb"
  ],
  "component": {
    "mpn": "74HC4051BQ",
    "manufacturer": "NXP Semicon",
    "package": "DHVQFN-16-EP(2.5x3.5)",
    "pin_count": 17,
    "category": "Interface",
    "subcategory": "Analog Switches, Multiplexers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/272fb4689d1f86ee15feb05277595113.pdf",
    "parts": {
      "symbol": "74hc4051bq.kicad_sym",
      "footprint": "74hc4051bq.kicad_mod",
      "model_3d": "74hc4051bq-hero.glb",
      "model_3d_plain": "74hc4051bq-etched.glb",
      "model_3d_step": "74hc4051bq-etched.step",
      "model_3d_step_plain": "74hc4051bq.step",
      "lbr": "74hc4051bq.lbr"
    },
    "distributor_links": {
      "lcsc": "C128429"
    },
    "distributor_check": {
      "checked_at": "2026-10-16T21:26:14Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Y4",
        "type": "bidirectional",
        "description": "Independent input/output of channel 4, connected to Z when E is LOW and S2 S1 S0 = H L L."
      },
      {
        "number": "2",
        "name": "Y6",
        "type": "bidirectional",
        "description": "Independent input/output of channel 6, connected to Z when E is LOW and S2 S1 S0 = H H L."
      },
      {
        "number": "3",
        "name": "Z",
        "type": "bidirectional",
        "description": "Common input/output that connects to the selected Yn channel; all switches are off when E is HIGH."
      },
      {
        "number": "4",
        "name": "Y7",
        "type": "bidirectional",
        "description": "Independent input/output of channel 7, connected to Z when E is LOW and S2 S1 S0 = H H H."
      },
      {
        "number": "5",
        "name": "Y5",
        "type": "bidirectional",
        "description": "Independent input/output of channel 5, connected to Z when E is LOW and S2 S1 S0 = H L H."
      },
      {
        "number": "6",
        "name": "E",
        "type": "input",
        "description": "Enable input, active LOW; when HIGH the switches are turned off."
      },
      {
        "number": "7",
        "name": "VEE",
        "type": "power_in",
        "description": "Supply voltage; voltages at Yn and Z may not exceed VCC or VEE."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground supply voltage, the 0 V reference for the limiting values."
      },
      {
        "number": "9",
        "name": "S2",
        "type": "input",
        "description": "Select input; with S1 and S0 it selects the channel per the function table."
      },
      {
        "number": "10",
        "name": "S1",
        "type": "input",
        "description": "Select input; with S2 and S0 it selects the channel per the function table."
      },
      {
        "number": "11",
        "name": "S0",
        "type": "input",
        "description": "Select input; least significant bit of the channel select per the function table."
      },
      {
        "number": "12",
        "name": "Y3",
        "type": "bidirectional",
        "description": "Independent input/output of channel 3, connected to Z when E is LOW and S2 S1 S0 = L H H."
      },
      {
        "number": "13",
        "name": "Y0",
        "type": "bidirectional",
        "description": "Independent input/output of channel 0, connected to Z when E is LOW and S2 S1 S0 = L L L."
      },
      {
        "number": "14",
        "name": "Y1",
        "type": "bidirectional",
        "description": "Independent input/output of channel 1, connected to Z when E is LOW and S2 S1 S0 = L L H."
      },
      {
        "number": "15",
        "name": "Y2",
        "type": "bidirectional",
        "description": "Independent input/output of channel 2, connected to Z when E is LOW and S2 S1 S0 = L H L."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage; the absolute maximum VCC is -0.5 V to +11.0 V."
      },
      {
        "number": "17",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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 BQ (DHVQFN16) pinning diagram shows an extra terminal marked VCC(1) that the datasheet says is n",
          "exposed pad 17 added from the footprint"
        ],
        "pages_sent": 7,
        "cost_usd": 0.0381,
        "at": "2026-10-16T21:25:18"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/272fb4689d1f86ee15feb05277595113.pdf",
        "pages": 28,
        "sha256": "e5b40e804e4dea04",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 17,
        "described": 17,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "74hc4051bq.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.52,
          3.52,
          0.9
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "ed08826ac39ec99d5b36124f08a9c78011d6c5e8339d660a42aa60cfbc9ac2cc",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74hc4051bq-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          3.52,
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        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "7845ad8a124d149adc84974439180016d58b955c32964c571e57c5360213dafa",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}