74HCT125D

{
  "schema_version": 1,
  "type": "component",
  "slug": "74hct125d",
  "title": "74HCT125D",
  "brief": "Nexperia Buffers, Drivers, Receivers, Transceivers, SOIC-14. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "logic",
    "74hct125d"
  ],
  "component": {
    "mpn": "74HCT125D",
    "manufacturer": "Nexperia",
    "package": "SOIC-14",
    "pin_count": 14,
    "category": "Logic",
    "subcategory": "Buffers, Drivers, Receivers, Transceivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8579712006357565440",
    "parts": {
      "symbol": "74hct125d.kicad_sym",
      "footprint": "74hct125d.kicad_mod",
      "model_3d": "74hct125d-etched.glb",
      "model_3d_plain": "74hct125d.glb",
      "model_3d_step": "74hct125d-etched.step",
      "model_3d_step_plain": "74hct125d.step",
      "lbr": "74hct125d.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "1OE",
        "type": "input",
        "description": "Output enable input for buffer 1 (active LOW). LOW enables 1Y to follow 1A; HIGH puts 1Y in high-impedance OFF-state. TTL input levels (VIH min 2.0 V, VIL max 0.8 V at VCC = 4.5-5.5 V)."
      },
      {
        "number": "2",
        "name": "1A",
        "type": "input",
        "description": "Data input for buffer 1. Passed through to 1Y when 1OE is LOW. TTL input levels; input leakage ±0.1 µA typ, input capacitance 3.5 pF typ."
      },
      {
        "number": "3",
        "name": "1Y",
        "type": "tri_state",
        "description": "Data output for buffer 1. Drives the value of 1A when 1OE is LOW; high-impedance when 1OE is HIGH. Rated for IO up to ±35 mA absolute max; VOH ≥ 3.98 V at IO = -6 mA, VOL ≤ 0.26 V at IO = 6 mA (VCC = 4.5 V)."
      },
      {
        "number": "4",
        "name": "2OE",
        "type": "input",
        "description": "Output enable input for buffer 2 (active LOW). LOW enables 2Y to follow 2A; HIGH puts 2Y in high-impedance OFF-state."
      },
      {
        "number": "5",
        "name": "2A",
        "type": "input",
        "description": "Data input for buffer 2. Passed through to 2Y when 2OE is LOW."
      },
      {
        "number": "6",
        "name": "2Y",
        "type": "tri_state",
        "description": "Data output for buffer 2. Drives the value of 2A when 2OE is LOW; high-impedance when 2OE is HIGH."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (0 V). Maximum sustained ground current ±70 mA per absolute maximum ratings."
      },
      {
        "number": "8",
        "name": "3Y",
        "type": "tri_state",
        "description": "Data output for buffer 3. Drives the value of 3A when 3OE is LOW; high-impedance when 3OE is HIGH."
      },
      {
        "number": "9",
        "name": "3A",
        "type": "input",
        "description": "Data input for buffer 3. Passed through to 3Y when 3OE is LOW."
      },
      {
        "number": "10",
        "name": "3OE",
        "type": "input",
        "description": "Output enable input for buffer 3 (active LOW). LOW enables 3Y to follow 3A; HIGH puts 3Y in high-impedance OFF-state."
      },
      {
        "number": "11",
        "name": "4Y",
        "type": "tri_state",
        "description": "Data output for buffer 4. Drives the value of 4A when 4OE is LOW; high-impedance when 4OE is HIGH."
      },
      {
        "number": "12",
        "name": "4A",
        "type": "input",
        "description": "Data input for buffer 4. Passed through to 4Y when 4OE is LOW."
      },
      {
        "number": "13",
        "name": "4OE",
        "type": "input",
        "description": "Output enable input for buffer 4 (active LOW). LOW enables 4Y to follow 4A; HIGH puts 4Y in high-impedance OFF-state."
      },
      {
        "number": "14",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply voltage. Recommended 4.5 V to 5.5 V for 74HCT125; absolute maximum -0.5 V to +7 V. Supply current ICC ≤ 8 µA at 25 °C (VCC = 5.5 V)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8579712006357565440",
        "pages": 13,
        "sha256": "3b5da3a3dcae2624",
        "source_tier": "lcsc"
      },
      "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"
    },
    "logic": {
      "family_id": "74HCT125",
      "logic_family": "74HCT",
      "function_code": "125",
      "function_class": "Buffer",
      "function_name": "Quad Bus Buffer with 3-State Outputs",
      "manufacturer": null,
      "is_specialty": false
    },
    "models_3d": [
      {
        "file": "74hct125d.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          8.7,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "3b9a775da256c8afcc28dcddfbc2eb3f266107fe61ce8446d96f2c52b6f44a70",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74hct125d-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          8.7,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f120cc828040477d268de7271a4fd929db9c6247b2a80674b99c282c095f9711",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Nexperia",
      "Package": "SOIC-14",
      "Category": "Logic",
      "Pins": "14"
    }
  },
  "variants": [
    {
      "mpn": "74HCT125DD",
      "kind": "packaging"
    },
    {
      "mpn": "74HCT125DPW",
      "kind": "packaging"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "74hct125d"
  ],
  "discovery_pitch": "74HCT125D (Nexperia) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "74hct125d.kicad_sym",
    "74hct125d.kicad_mod",
    "74hct125d.glb",
    "74hct125d.step",
    "74hct125d.lbr",
    "docs/hero.png",
    "docs/74hct125d-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T15:04:39.267Z"
}