74HC4051N

{
  "slug": "74hc4051n",
  "version": "0.1.0",
  "type": "component",
  "description": "HGSEMI Analog Switches, Multiplexers, DIP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface",
    "74hc4051n",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "74hc4051n.kicad_sym",
    "74hc4051n.kicad_mod",
    "74hc4051n.glb",
    "74hc4051n.step",
    "74hc4051n.lbr",
    "docs/hero.png",
    "docs/74hc4051n-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "74hc4051n-hero.glb",
    "74hc4051n-hero.overlay.json",
    "74hc4051n-etched.glb"
  ],
  "component": {
    "mpn": "74HC4051N",
    "manufacturer": "HGSEMI",
    "package": "DIP-16",
    "pin_count": 16,
    "category": "Interface",
    "subcategory": "Analog Switches, Multiplexers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603359770951114752",
    "parts": {
      "symbol": "74hc4051n.kicad_sym",
      "footprint": "74hc4051n.kicad_mod",
      "model_3d": "74hc4051n-hero.glb",
      "model_3d_plain": "74hc4051n-etched.glb",
      "model_3d_step": "74hc4051n-etched.step",
      "model_3d_step_plain": "74hc4051n.step",
      "lbr": "74hc4051n.lbr"
    },
    "distributor_links": {
      "lcsc": "C22461600"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T06:57:19Z",
      "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 analog input/output channel 4, which connects to common Z when selected by A0-A2 with E low; analog voltage must stay between VEE and VDD and switch current is limited to ±10 mA."
      },
      {
        "number": "2",
        "name": "Y6",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 6, which connects to common Z when selected by A0-A2 with E low; analog voltage must stay between VEE and VDD and switch current is limited to ±10 mA."
      },
      {
        "number": "3",
        "name": "Z",
        "type": "bidirectional",
        "description": "Common analog input/output that connects to whichever Y channel is selected; Y and Z voltages must not exceed VDD or fall below VEE, and switch current is limited to ±10 mA."
      },
      {
        "number": "4",
        "name": "Y7",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 7, which connects to common Z when selected by A0-A2 with E low; analog voltage must stay between VEE and VDD and switch current is limited to ±10 mA."
      },
      {
        "number": "5",
        "name": "Y5",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 5, which connects to common Z when selected by A0-A2 with E low; analog voltage must stay between VEE and VDD and switch current is limited to ±10 mA."
      },
      {
        "number": "6",
        "name": "E",
        "type": "input",
        "description": "Active-low enable input; when driven high, all switches are turned off (high impedance) and A0-A2 are ignored, while the datasheet's absolute maximum input voltage is VDD+0.5 V relative to VSS."
      },
      {
        "number": "7",
        "name": "VEE",
        "type": "power_in",
        "description": "Negative power supply; the datasheet limits VDD−VEE to 9 V maximum and VEE to −12 V to +0.5 V (referenced to the supply) in absolute maximum ratings."
      },
      {
        "number": "8",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference for the digital control inputs (A0-A2 and E); when the device is used as a digital multiplexer, VEE and VSS are tied together, typically to ground."
      },
      {
        "number": "9",
        "name": "A2",
        "type": "input",
        "description": "Channel select input bit 2 (most significant) that, with A1 and A0, selects one of Y0-Y7 when E is low; the datasheet notes these inputs must not be changed to switch channels while E is high because they are ignored."
      },
      {
        "number": "10",
        "name": "A1",
        "type": "input",
        "description": "Channel select input bit 1 that, with A2 and A0, selects one of Y0-Y7 when E is low; digital input range is 0 V to VDD."
      },
      {
        "number": "11",
        "name": "A0",
        "type": "input",
        "description": "Channel select input bit 0 (least significant) that, with A2 and A1, selects one of Y0-Y7 when E is low; digital input range is 0 V to VDD."
      },
      {
        "number": "12",
        "name": "Y3",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 3, which connects to common Z when selected by A0-A2 with E low; analog voltage must stay between VEE and VDD and switch current is limited to ±10 mA."
      },
      {
        "number": "13",
        "name": "Y0",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 0, which connects to common Z when selected by A0-A2 with E low; analog voltage must stay between VEE and VDD and switch current is limited to ±10 mA."
      },
      {
        "number": "14",
        "name": "Y1",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 1, which connects to common Z when selected by A0-A2 with E low; analog voltage must stay between VEE and VDD and switch current is limited to ±10 mA."
      },
      {
        "number": "15",
        "name": "Y2",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 2, which connects to common Z when selected by A0-A2 with E low; analog voltage must stay between VEE and VDD and switch current is limited to ±10 mA."
      },
      {
        "number": "16",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive power supply; the datasheet specifies VDD−VEE of 3.0 V to 9.0 V, with absolute maximum VDD of −0.5 V to +12 V."
      }
    ],
    "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: Pin 6 is printed with an overline over E (active-low enable); the text extraction shows it as a garb; Pin names and functions come from the pin table on page 4 (the DIP-16/SOP-16/TSSOP-16/QSOP-16 share ; Pin descriptions for Y, Z, E, A0–A2 and supply pins combine the pin table with limits stated in the "
        ],
        "pages_sent": 16,
        "cost_usd": 0.0558,
        "at": "2026-10-19T06:54:56"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603359770951114752",
        "pages": 16,
        "sha256": "e76afd9e53c61c06",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          19.177,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "17a30b1f0ab3fd5384a1231e3c63c394888d5b952c542a8c189e023ed3467464",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74hc4051n-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
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        "zmin_mm": -3.3,
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        "sha256": "93f9924459a4f227e64c73ec65e2b48eb1842174bf77d5540be7a32bb1db6e51",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}