74HC125D

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  "type": "component",
  "slug": "74hc125d",
  "title": "74HC125D",
  "brief": "Nexperia Buffer/Driver/Transceiver, SOIC-14. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.1",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "logic",
    "74hc125d"
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  "component": {
    "mpn": "74HC125D",
    "manufacturer": "Nexperia",
    "package": "SOIC-14",
    "pin_count": 14,
    "category": "Logic",
    "subcategory": "Buffer/Driver/Transceiver",
    "datasheet": "https://assets.nexperia.com/documents/data-sheet/74HC125D.pdf",
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      "footprint": "74hc125d.kicad_mod",
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      "model_3d_plain": "74hc125d.glb",
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      "lbr": "74hc125d.lbr"
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    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "1OE",
        "type": "input",
        "description": "Output enable input for buffer 1 (active LOW). A LOW enables buffer 1 to pass 1A to 1Y; a HIGH places 1Y into high-impedance state."
      },
      {
        "number": "2",
        "name": "1A",
        "type": "input",
        "description": "Data input for buffer 1. CMOS-level input (74HC125) or TTL-level input (74HCT125); VI range 0 V to VCC."
      },
      {
        "number": "3",
        "name": "1Y",
        "type": "tri_state",
        "description": "Data output for buffer 1. 3-state output; drives typically ±6 mA at VCC = 4.5 V. High-Z when 1OE is HIGH."
      },
      {
        "number": "4",
        "name": "2OE",
        "type": "input",
        "description": "Output enable input for buffer 2 (active LOW). A LOW enables 2A to 2Y; a HIGH places 2Y into high-impedance state."
      },
      {
        "number": "5",
        "name": "2A",
        "type": "input",
        "description": "Data input for buffer 2. CMOS/TTL logic input; VI range 0 V to VCC."
      },
      {
        "number": "6",
        "name": "2Y",
        "type": "tri_state",
        "description": "Data output for buffer 2. 3-state output controlled by 2OE."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (0 V)."
      },
      {
        "number": "8",
        "name": "3Y",
        "type": "tri_state",
        "description": "Data output for buffer 3. 3-state output controlled by 3OE."
      },
      {
        "number": "9",
        "name": "3A",
        "type": "input",
        "description": "Data input for buffer 3. CMOS/TTL logic input; VI range 0 V to VCC."
      },
      {
        "number": "10",
        "name": "3OE",
        "type": "input",
        "description": "Output enable input for buffer 3 (active LOW). A LOW enables 3A to 3Y; a HIGH places 3Y into high-impedance state."
      },
      {
        "number": "11",
        "name": "4Y",
        "type": "tri_state",
        "description": "Data output for buffer 4. 3-state output controlled by 4OE."
      },
      {
        "number": "12",
        "name": "4A",
        "type": "input",
        "description": "Data input for buffer 4. CMOS/TTL logic input; VI range 0 V to VCC."
      },
      {
        "number": "13",
        "name": "4OE",
        "type": "input",
        "description": "Output enable input for buffer 4 (active LOW). A LOW enables 4A to 4Y; a HIGH places 4Y into high-impedance state."
      },
      {
        "number": "14",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply voltage. 74HC125: 2.0 V to 6.0 V. 74HCT125: 4.5 V to 5.5 V."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://assets.nexperia.com/documents/data-sheet/74HC125D.pdf",
        "pages": 13,
        "sha256": "3b5da3a3dcae2624",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 14,
        "described": 14,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
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    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -3.81
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-14_3.9x8.7mm_P1.27mm@sha256:a885b619b22880c9",
      "mark": "drawn"
    },
    "logic": {
      "family_id": "74HC125",
      "logic_family": "74HC",
      "function_code": "125",
      "function_class": "Buffer",
      "function_name": "Quad Bus Buffer with 3-State Outputs",
      "manufacturer": null,
      "is_specialty": false
    },
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          8.7,
          1.75
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "3b9a775da256c8afcc28dcddfbc2eb3f266107fe61ce8446d96f2c52b6f44a70",
        "checked": "2026-10-07",
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        "origin": "footprint origin = pad-pattern centre",
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        "sha256": "56e9fcecca81ce43f814c27aa6acc49d4c06cf685c1ca562300f2aa59f2051ab",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Nexperia",
      "Package": "SOIC-14",
      "Category": "Logic",
      "Pins": "14"
    }
  },
  "sections": [
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  "discovery_triggers": [
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  "discovery_pitch": "74HC125D (Nexperia) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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    "74hc125d.kicad_sym",
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    "74hc125d-etched.step",
    "74hc125d.lbr",
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    "docs/74hc125d-datasheet.pdf",
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    "viewers/footprint.html",
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  "visibility": "public",
  "updated_at": "2026-09-24T14:51:02.062Z",
  "description": "Nexperia Buffer/Driver/Transceiver, SOIC-14. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "org": "adom"
}