U74HC4051G-S16-R

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  "title": "U74HC4051G-S16-R",
  "brief": "UTC Unisonic Tech Analog Switches, Multiplexers, SOIC-16. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
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  "component": {
    "mpn": "U74HC4051G-S16-R",
    "manufacturer": "UTC Unisonic Tech",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Interface",
    "subcategory": "Analog Switches, Multiplexers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/6f06daafd54b43efafb46bf4ddf24f73.pdf",
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    "pins": [
      {
        "number": "1",
        "name": "Y4",
        "type": "bidirectional",
        "description": "Analog channel 4 input/output. Connected to common Z pin when S2=H, S1=L, S0=L and E=L. Signal voltage may swing between VEE and VCC."
      },
      {
        "number": "2",
        "name": "Y6",
        "type": "bidirectional",
        "description": "Analog channel 6 input/output. Connected to common Z pin when S2=H, S1=H, S0=L and E=L. Signal voltage may swing between VEE and VCC."
      },
      {
        "number": "3",
        "name": "Z",
        "type": "bidirectional",
        "description": "Common analog input/output (multiplexer common terminal). Connects to the selected Yn channel per the S2/S1/S0 select code when E is low."
      },
      {
        "number": "4",
        "name": "Y7",
        "type": "bidirectional",
        "description": "Analog channel 7 input/output. Connected to common Z pin when S2=H, S1=H, S0=H and E=L. Signal voltage may swing between VEE and VCC."
      },
      {
        "number": "5",
        "name": "Y5",
        "type": "bidirectional",
        "description": "Analog channel 5 input/output. Connected to common Z pin when S2=H, S1=L, S0=H and E=L. Signal voltage may swing between VEE and VCC."
      },
      {
        "number": "6",
        "name": "E",
        "type": "input",
        "description": "Active-low enable input (E-bar). When low, the selected channel is connected to Z; when high, all channels are disconnected (high impedance)."
      },
      {
        "number": "7",
        "name": "VEE",
        "type": "power_in",
        "description": "Negative analog supply voltage. Typically 0V for single-supply digital use, or negative (e.g. -5V) to allow bipolar analog signals. VCC-VEE range 2.0V to 10.0V."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Digital ground / logic reference for the S0/S1/S2 and E select inputs. VCC-GND recommended range 2.0V to 10.0V."
      },
      {
        "number": "9",
        "name": "S2",
        "type": "input",
        "description": "Digital channel-select input (MSB). Combined with S1 and S0, selects one of eight Y0-Y7 channels to connect to Z."
      },
      {
        "number": "10",
        "name": "S1",
        "type": "input",
        "description": "Digital channel-select input. Combined with S2 and S0, selects one of eight Y0-Y7 channels to connect to Z."
      },
      {
        "number": "11",
        "name": "S0",
        "type": "input",
        "description": "Digital channel-select input (LSB). Combined with S2 and S1, selects one of eight Y0-Y7 channels to connect to Z."
      },
      {
        "number": "12",
        "name": "Y3",
        "type": "bidirectional",
        "description": "Analog channel 3 input/output. Connected to common Z pin when S2=L, S1=H, S0=H and E=L. Signal voltage may swing between VEE and VCC."
      },
      {
        "number": "13",
        "name": "Y0",
        "type": "bidirectional",
        "description": "Analog channel 0 input/output. Connected to common Z pin when S2=L, S1=L, S0=L and E=L. Signal voltage may swing between VEE and VCC."
      },
      {
        "number": "14",
        "name": "Y1",
        "type": "bidirectional",
        "description": "Analog channel 1 input/output. Connected to common Z pin when S2=L, S1=L, S0=H and E=L. Signal voltage may swing between VEE and VCC."
      },
      {
        "number": "15",
        "name": "Y2",
        "type": "bidirectional",
        "description": "Analog channel 2 input/output. Connected to common Z pin when S2=L, S1=H, S0=L and E=L. Signal voltage may swing between VEE and VCC."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive digital/analog supply voltage. Absolute maximum -0.5V to +11.0V; recommended VCC-GND and VCC-VEE ranges 2.0V to 10.0V."
      }
    ],
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        "pages": 9,
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        "source_tier": "mfr"
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      "pins": {
        "total": 16,
        "described": 16,
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        "refuses_to_fabricate": true
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    "logic": {
      "family_id": "74HC4051",
      "logic_family": "74HC",
      "function_code": "4051",
      "function_class": "Multiplexer",
      "function_name": "8-Channel Analog Multiplexer/Demultiplexer",
      "manufacturer": "UTC (Unisonic Tech)",
      "is_specialty": false
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "UTC Unisonic Tech",
      "Package": "SOIC-16",
      "Category": "Interface",
      "Pins": "16"
    }
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    "name": "Ray"
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  "variants": [
    {
      "mpn": "U74HC4051G-S16-R",
      "kind": "packaging"
    },
    {
      "mpn": "U74HC4051G-S16-T",
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    },
    {
      "mpn": "U74HC4051G-S16-RL-D16-T",
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    {
      "mpn": "U74HC4051G-S16-RG-D16-T",
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    {
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    {
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  "updated_at": "2026-09-25T13:24:23.738Z"
}