74HC4851PW

{
  "slug": "74hc4851pw",
  "version": "0.1.0",
  "type": "component",
  "description": "Nexperia Analog Switches, Multiplexers, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface",
    "74hc4851pw",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "74hc4851pw.kicad_sym",
    "74hc4851pw.kicad_mod",
    "74hc4851pw.glb",
    "74hc4851pw.step",
    "74hc4851pw.lbr",
    "docs/hero.png",
    "docs/74hc4851pw-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "74hc4851pw-hero.glb",
    "74hc4851pw-hero.overlay.json"
  ],
  "component": {
    "mpn": "74HC4851PW",
    "manufacturer": "Nexperia",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "Interface",
    "subcategory": "Analog Switches, Multiplexers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588908357499830272",
    "parts": {
      "symbol": "74hc4851pw.kicad_sym",
      "footprint": "74hc4851pw.kicad_mod",
      "model_3d": "74hc4851pw-hero.glb",
      "model_3d_plain": "74hc4851pw.glb",
      "model_3d_step": "74hc4851pw-etched.step",
      "model_3d_step_plain": "74hc4851pw.step",
      "lbr": "74hc4851pw.lbr"
    },
    "distributor_links": {
      "lcsc": "C547083",
      "mouser": "771-74HC4851PW"
    },
    "distributor_check": {
      "checked_at": "2026-10-10T00:39:34Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": "771-74HC4851PW",
        "status": "found",
        "lifecycle": "End of Life"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Y4",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 4; connects to common Z when selected by S0 to S2 with E LOW, and is high-impedance OFF when E is HIGH."
      },
      {
        "number": "2",
        "name": "Y6",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 6; connects to common Z when selected by S0 to S2 with E LOW, and is high-impedance OFF when E is HIGH."
      },
      {
        "number": "3",
        "name": "Z",
        "type": "bidirectional",
        "description": "Common analog input/output; connected to the selected Yn channel when E is LOW."
      },
      {
        "number": "4",
        "name": "Y7",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 7; connects to common Z when selected by S0 to S2 with E LOW, and is high-impedance OFF when E is HIGH."
      },
      {
        "number": "5",
        "name": "Y5",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 5; connects to common Z when selected by S0 to S2 with E LOW, and is high-impedance OFF when E is HIGH."
      },
      {
        "number": "6",
        "name": "E",
        "type": "input",
        "description": "Enable input, active LOW; when HIGH all switches are in the high-impedance OFF-state independent of S0 to S2."
      },
      {
        "number": "7",
        "name": "n.c.",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (0 V) reference for all voltages on the device."
      },
      {
        "number": "9",
        "name": "S2",
        "type": "input",
        "description": "Select input (most significant bit of the channel select code); with S1 and S0 chooses which Yn channel connects to Z when E is LOW."
      },
      {
        "number": "10",
        "name": "S1",
        "type": "input",
        "description": "Select input (middle bit of the channel select code); with S2 and S0 chooses which Yn channel connects to Z when E is LOW."
      },
      {
        "number": "11",
        "name": "S0",
        "type": "input",
        "description": "Select input (least significant bit of the channel select code); with S2 and S1 chooses which Yn channel connects to Z when E is LOW."
      },
      {
        "number": "12",
        "name": "Y3",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 3; connects to common Z when selected by S0 to S2 with E LOW, and is high-impedance OFF when E is HIGH."
      },
      {
        "number": "13",
        "name": "Y0",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 0; connects to common Z when selected by S0 to S2 with E LOW, and is high-impedance OFF when E is HIGH."
      },
      {
        "number": "14",
        "name": "Y1",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 1; connects to common Z when selected by S0 to S2 with E LOW, and is high-impedance OFF when E is HIGH."
      },
      {
        "number": "15",
        "name": "Y2",
        "type": "bidirectional",
        "description": "Independent analog input/output channel 2; connects to common Z when selected by S0 to S2 with E LOW, and is high-impedance OFF when E is HIGH."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage: recommended 2.0 V to 6.0 V for 74HC4851 and 4.5 V to 5.5 V for 74HCT4851; absolute maximum VCC is 7.0 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: The datasheet gives no electrical spec fields for this request beyond pinout; pin numbers were taken"
        ],
        "pages_sent": 19,
        "cost_usd": 0.0983,
        "at": "2026-10-10T00:37:02"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588908357499830272",
        "pages": 19,
        "sha256": "244b13d1b9d615b4",
        "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": [
      {
        "file": "74hc4851pw.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": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74hc4851pw-etched.step",
        "role": "eda",
        "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": "5b306d47021ccd55ca239071dc1551a82d19ea63ceab11ee6132bae4a0fc0c79",
        "checked": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}