74HC4051PW

{
  "schema_version": 1,
  "type": "component",
  "slug": "74hc4051pw",
  "title": "74HC4051PW",
  "brief": "Nexperia Analog Switches, Multiplexers, TSSOP-16. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "74hc4051pw"
  ],
  "component": {
    "mpn": "74HC4051PW",
    "manufacturer": "Nexperia",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "Interface",
    "subcategory": "Analog Switches, Multiplexers",
    "datasheet": "https://assets.nexperia.com/documents/data-sheet/74HC4051PW.pdf",
    "parts": {
      "symbol": "74hc4051pw.kicad_sym",
      "footprint": "74hc4051pw.kicad_mod",
      "model_3d": "74hc4051pw-etched.glb",
      "model_3d_plain": "74hc4051pw.glb",
      "model_3d_step": "74hc4051pw-etched.step",
      "model_3d_step_plain": "74hc4051pw.step",
      "lbr": "74hc4051pw.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "Y4",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 4. Connected to common Z when S2=H, S1=L, S0=L and E=L. Analog signal range VEE to VCC."
      },
      {
        "number": "2",
        "name": "Y6",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 6. Connected to common Z when S2=H, S1=H, S0=L and E=L. Analog signal range VEE to VCC."
      },
      {
        "number": "3",
        "name": "Z",
        "type": "bidirectional",
        "description": "Common analog input/output (SP8T pole). Connected to the selected Y0-Y7 channel per the S2/S1/S0 select code when enable E is LOW."
      },
      {
        "number": "4",
        "name": "Y7",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 7. Connected to common Z when S2=H, S1=H, S0=H and E=L. Analog signal range VEE to VCC."
      },
      {
        "number": "5",
        "name": "Y5",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 5. Connected to common Z when S2=H, S1=L, S0=H and E=L. Analog signal range VEE to VCC."
      },
      {
        "number": "6",
        "name": "~E",
        "type": "input",
        "description": "Enable input, active LOW. When LOW, the selected switch (per S0/S1/S2) is ON; when HIGH, all switches are OFF (Z is isolated from all Y channels)."
      },
      {
        "number": "7",
        "name": "VEE",
        "type": "power_in",
        "description": "Negative analog supply voltage rail. Sets the lower analog signal range; may be tied to GND for single-supply operation or to a negative rail (VCC-VEE up to 10 V for HC, 5.5 V-referenced for HCT)."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground supply voltage (0 V reference). Logic reference for the digital select and enable inputs."
      },
      {
        "number": "9",
        "name": "S2",
        "type": "input",
        "description": "Digital channel-select input bit 2 (MSB of the 3-bit S2:S0 selector). CMOS logic level referenced to VCC/GND."
      },
      {
        "number": "10",
        "name": "S1",
        "type": "input",
        "description": "Digital channel-select input bit 1. CMOS logic level referenced to VCC/GND."
      },
      {
        "number": "11",
        "name": "S0",
        "type": "input",
        "description": "Digital channel-select input bit 0 (LSB of the 3-bit S2:S0 selector). CMOS logic level referenced to VCC/GND."
      },
      {
        "number": "12",
        "name": "Y3",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 3. Connected to common Z when S2=L, S1=H, S0=H and E=L. Analog signal range VEE to VCC."
      },
      {
        "number": "13",
        "name": "Y0",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 0. Connected to common Z when S2=L, S1=L, S0=L and E=L. Analog signal range VEE to VCC."
      },
      {
        "number": "14",
        "name": "Y1",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 1. Connected to common Z when S2=L, S1=L, S0=H and E=L. Analog signal range VEE to VCC."
      },
      {
        "number": "15",
        "name": "Y2",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 2. Connected to common Z when S2=L, S1=H, S0=L and E=L. Analog signal range VEE to VCC."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply voltage. 2.0-10.0 V for 74HC4051; 4.5-5.5 V for 74HCT4051. Also sets the upper analog signal range with VEE."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://assets.nexperia.com/documents/data-sheet/74HC4051PW.pdf",
        "pages": 28,
        "sha256": "e5b40e804e4dea04",
        "source_tier": "mfr"
      },
      "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": [
        -2.8625,
        -2.275
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "TSSOP-16_4.4x5mm_P0.65mm@sha256:fbac79fc5f310754",
      "mark": "drawn"
    },
    "logic": {
      "family_id": "74HC4051",
      "logic_family": "74HC",
      "function_code": "4051",
      "function_class": "Multiplexer",
      "function_name": "8-Channel Analog Multiplexer/Demultiplexer",
      "manufacturer": null,
      "is_specialty": false
    },
    "models_3d": [
      {
        "file": "74hc4051pw.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "6ad5e98224d02a427d9a6b929a28dbc158b9925fba5adec12db05079f1016948",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74hc4051pw-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "29c7dffa2301ca0904b376997c7b25829956c04c2676102ba5cc566d656a5738",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Nexperia",
      "Package": "TSSOP-16",
      "Category": "Interface",
      "Pins": "16"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "74hc4051pw"
  ],
  "discovery_pitch": "74HC4051PW (Nexperia) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "74hc4051pw.kicad_sym",
    "74hc4051pw.kicad_mod",
    "74hc4051pw.glb",
    "74hc4051pw.step",
    "74hc4051pw-etched.step",
    "74hc4051pw.lbr",
    "docs/hero.png",
    "docs/74hc4051pw-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T14:58:50.797Z"
}