HEF4051BTT

{
  "slug": "hef4051btt",
  "version": "0.1.0",
  "type": "component",
  "description": "Nexperia Signal Switches, Multiplexers, Decoders, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "hef4051btt",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "hef4051btt.kicad_sym",
    "hef4051btt.kicad_mod",
    "hef4051btt.glb",
    "hef4051btt.step",
    "hef4051btt.lbr",
    "docs/hero.png",
    "docs/hef4051btt-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "hef4051btt-hero.glb",
    "hef4051btt-hero.overlay.json",
    "hef4051btt-etched.glb"
  ],
  "component": {
    "mpn": "HEF4051BTT",
    "manufacturer": "Nexperia",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Signal Switches, Multiplexers, Decoders",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588885035475226624",
    "parts": {
      "symbol": "hef4051btt.kicad_sym",
      "footprint": "hef4051btt.kicad_mod",
      "model_3d": "hef4051btt-hero.glb",
      "model_3d_plain": "hef4051btt-etched.glb",
      "model_3d_step": "hef4051btt-etched.step",
      "model_3d_step_plain": "hef4051btt.step",
      "lbr": "hef4051btt.lbr"
    },
    "distributor_links": {
      "lcsc": "C513217"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T14:45:46Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Y4",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 4 that connects to Z when selected by S1 to S3 with E LOW; Yn and Z voltages must not exceed VDD or VEE, and the input/output current is limited to ±10 mA."
      },
      {
        "number": "2",
        "name": "Y6",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 6 that connects to Z when selected by S1 to S3 with E LOW; Yn and Z voltages must not exceed VDD or VEE, and the input/output current is limited to ±10 mA."
      },
      {
        "number": "3",
        "name": "Z",
        "type": "bidirectional",
        "description": "Common analog output or input of the 8-channel switch; voltages at Z must not exceed VDD or VEE, and the input/output current is limited to ±10 mA."
      },
      {
        "number": "4",
        "name": "Y7",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 7 that connects to Z when selected by S1 to S3 with E LOW; Yn and Z voltages must not exceed VDD or VEE, and the input/output current is limited to ±10 mA."
      },
      {
        "number": "5",
        "name": "Y5",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 5 that connects to Z when selected by S1 to S3 with E LOW; Yn and Z voltages must not exceed VDD or VEE, and the input/output current is limited to ±10 mA."
      },
      {
        "number": "6",
        "name": "E",
        "type": "input",
        "description": "Active-LOW enable input; a HIGH level switches all channels off, and the input clamp current for this pin is limited to ±10 mA when the input is below VSS - 0.5 V or above VDD + 0.5 V."
      },
      {
        "number": "7",
        "name": "VEE",
        "type": "power_in",
        "description": "Supply voltage pin referenced to VDD, with a limiting value range of -18 V to +0.5 V."
      },
      {
        "number": "8",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground supply pin; all voltages in the datasheet are referenced to VSS = 0 V (ground)."
      },
      {
        "number": "9",
        "name": "S3",
        "type": "input",
        "description": "Digital select input (binary channel select, S3 is the most significant bit of S3 S2 S1); the input voltage must stay between -0.5 V and VDD + 0.5 V, with input clamp current limited to ±10 mA."
      },
      {
        "number": "10",
        "name": "S2",
        "type": "input",
        "description": "Digital select input (binary channel select, S2 is the middle bit of S3 S2 S1); the input voltage must stay between -0.5 V and VDD + 0.5 V, with input clamp current limited to ±10 mA."
      },
      {
        "number": "11",
        "name": "S1",
        "type": "input",
        "description": "Digital select input (binary channel select, S1 is the least significant bit of S3 S2 S1); the input voltage must stay between -0.5 V and VDD + 0.5 V, with input clamp current limited to ±10 mA."
      },
      {
        "number": "12",
        "name": "Y3",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 3 that connects to Z when selected by S1 to S3 with E LOW; Yn and Z voltages must not exceed VDD or VEE, and the input/output current is limited to ±10 mA."
      },
      {
        "number": "13",
        "name": "Y0",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 0 that connects to Z when selected by S1 to S3 with E LOW; Yn and Z voltages must not exceed VDD or VEE, and the input/output current is limited to ±10 mA."
      },
      {
        "number": "14",
        "name": "Y1",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 1 that connects to Z when selected by S1 to S3 with E LOW; Yn and Z voltages must not exceed VDD or VEE, and the input/output current is limited to ±10 mA."
      },
      {
        "number": "15",
        "name": "Y2",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 2 that connects to Z when selected by S1 to S3 with E LOW; Yn and Z voltages must not exceed VDD or VEE, and the input/output current is limited to ±10 mA."
      },
      {
        "number": "16",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply voltage, recommended 3 V to 15 V (absolute limiting range -0.5 V to +18 V referenced to VSS)."
      }
    ],
    "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 gives only a limiting range for VEE (-18 V to +0.5 V referenced to VDD) and no recomme; The datasheet calls Yn 'independent input or output'; it is classified here as bidirectional, which ; The datasheet's pinout (Fig. 6) and pin table (Table 2) cover both the SO16 and TSSOP16 packages wit"
        ],
        "pages_sent": 18,
        "cost_usd": 0.0877,
        "at": "2026-10-18T14:43:39"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588885035475226624",
        "pages": 18,
        "sha256": "2ca4418589c3e483",
        "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"
    },
    "models_3d": [
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        "file": "hef4051btt.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5.0,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "6ad5e98224d02a427d9a6b929a28dbc158b9925fba5adec12db05079f1016948",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "hef4051btt-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": -0.0,
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        "footprint_binding": "identity",
        "sha256": "9b876e0eeb433752ae7851a680ff6fc88f9c62824816a5c56b58f204b9b13767",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}