SN74HC151 8-to-1 Multiplexer

{
  "schema_version": 1,
  "type": "component",
  "slug": "sn74hc151",
  "title": "SN74HC151 8-to-1 Multiplexer",
  "brief": "8-to-1 data selector/multiplexer with complementary outputs and an enable.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "logic",
    "multiplexer",
    "data-selector",
    "74hc",
    "ti",
    "soic-16"
  ],
  "component": {
    "mpn": "SN74HC151",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Multiplexer",
    "datasheet": "https://www.ti.com/lit/ds/symlink/sn74hc151.pdf",
    "parts": {
      "symbol": "sn74hc151.kicad_sym",
      "footprint": "sn74hc151.kicad_mod",
      "model_3d": "sn74hc151-etched.glb",
      "model_3d_plain": "sn74hc151.glb",
      "lbr": "sn74hc151.lbr",
      "model_3d_step": "sn74hc151-etched.step",
      "model_3d_step_plain": "sn74hc151.step"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "D3",
        "type": "input",
        "description": "Data input 3. Routed to output Y (and inverted to W) when the select code CBA = 011 and strobe G is low."
      },
      {
        "number": "2",
        "name": "D2",
        "type": "input",
        "description": "Data input 2. Routed to output Y (and inverted to W) when the select code CBA = 010 and strobe G is low."
      },
      {
        "number": "3",
        "name": "D1",
        "type": "input",
        "description": "Data input 1. Routed to output Y (and inverted to W) when the select code CBA = 001 and strobe G is low."
      },
      {
        "number": "4",
        "name": "D0",
        "type": "input",
        "description": "Data input 0. Routed to output Y (and inverted to W) when the select code CBA = 000 and strobe G is low."
      },
      {
        "number": "5",
        "name": "Y",
        "type": "output",
        "description": "True (non-inverted) data output. Presents the level of the selected D input when strobe G is low; forced low when G is high. Push-pull CMOS output rated ±6 mA at 5 V."
      },
      {
        "number": "6",
        "name": "W",
        "type": "output",
        "description": "Inverted data output. Presents the complement of the selected D input when strobe G is low; forced high when G is high. Push-pull CMOS output rated ±6 mA at 5 V."
      },
      {
        "number": "7",
        "name": "~{G}",
        "type": "input",
        "description": "Active-low strobe (output enable). When low, the multiplexer output tracks the selected D input; when high, Y is forced low and W is forced high, disabling data selection."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (0 V). Connect to system ground."
      },
      {
        "number": "9",
        "name": "C",
        "type": "input",
        "description": "Select input C (MSB of the 3-bit channel address). Together with B and A chooses which of the eight D inputs is routed to the outputs."
      },
      {
        "number": "10",
        "name": "B",
        "type": "input",
        "description": "Select input B (middle bit of the 3-bit channel address). Together with C and A chooses which of the eight D inputs is routed to the outputs."
      },
      {
        "number": "11",
        "name": "A",
        "type": "input",
        "description": "Select input A (LSB of the 3-bit channel address). Together with C and B chooses which of the eight D inputs is routed to the outputs."
      },
      {
        "number": "12",
        "name": "D7",
        "type": "input",
        "description": "Data input 7. Routed to output Y (and inverted to W) when the select code CBA = 111 and strobe G is low."
      },
      {
        "number": "13",
        "name": "D6",
        "type": "input",
        "description": "Data input 6. Routed to output Y (and inverted to W) when the select code CBA = 110 and strobe G is low."
      },
      {
        "number": "14",
        "name": "D5",
        "type": "input",
        "description": "Data input 5. Routed to output Y (and inverted to W) when the select code CBA = 101 and strobe G is low."
      },
      {
        "number": "15",
        "name": "D4",
        "type": "input",
        "description": "Data input 4. Routed to output Y (and inverted to W) when the select code CBA = 100 and strobe G is low."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply voltage. Recommended operating range 2 V to 6 V (5 V nominal). Bypass with a 0.1-µF ceramic capacitor close to the pin."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/sn74hc151.pdf",
        "pages": 28,
        "sha256": "52a419ef9dca8855",
        "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"
    },
    "logic": {
      "family_id": "74HC151",
      "logic_family": "74HC",
      "function_code": "151",
      "function_class": "Multiplexer",
      "function_name": "8-to-1 Multiplexer",
      "manufacturer": "Texas Instruments",
      "is_specialty": false
    },
    "models_3d": [
      {
        "file": "sn74hc151.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          9.9,
          1.75
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
        "file": "sn74hc151-etched.step",
        "role": "eda",
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        "zmin_mm": -0.0,
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        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Type": "8-to-1 multiplexer / data selector",
      "Logic family": "74HC (CMOS)",
      "Outputs": "True (Y) and complement (W)",
      "Supply voltage": "2 V to 6 V",
      "Propagation delay": "17 ns typ at 5 V",
      "Operating temperature": "-40 C to 85 C"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "8-to-1 mux",
    "data selector",
    "multiplexer",
    "parallel to serial"
  ],
  "discovery_pitch": "Select one of eight inputs onto a single output with three address lines, with true and inverted outputs.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
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  "files": [
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  "variants": [
    {
      "mpn": "SN74HC151D",
      "kind": "unknown"
    },
    {
      "mpn": "SN74HC151N",
      "kind": "unknown"
    },
    {
      "mpn": "SN74HC151NS",
      "kind": "unknown"
    },
    {
      "mpn": "SN74HC151PW",
      "kind": "unknown"
    },
    {
      "mpn": "SN74HC151J",
      "kind": "unknown"
    },
    {
      "mpn": "SN74HC151FK",
      "kind": "unknown"
    }
  ]
}