74HC377D

{
  "slug": "74hc377d",
  "version": "0.1.0",
  "type": "component",
  "description": "Nexperia Flip Flops, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "74hc377d",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "74hc377d.kicad_sym",
    "74hc377d.kicad_mod",
    "74hc377d.glb",
    "74hc377d.step",
    "74hc377d.lbr",
    "docs/hero.png",
    "docs/74hc377d-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "74hc377d-hero.glb",
    "74hc377d-hero.overlay.json",
    "74hc377d-etched.glb"
  ],
  "component": {
    "mpn": "74HC377D",
    "manufacturer": "Nexperia",
    "package": "SOIC-20-300mil",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Flip Flops",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8579711869245767680",
    "parts": {
      "symbol": "74hc377d.kicad_sym",
      "footprint": "74hc377d.kicad_mod",
      "model_3d": "74hc377d-hero.glb",
      "model_3d_plain": "74hc377d-etched.glb",
      "model_3d_step": "74hc377d-etched.step",
      "model_3d_step_plain": "74hc377d.step",
      "lbr": "74hc377d.lbr"
    },
    "distributor_links": {
      "lcsc": "C5639"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T14:07:00Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "E",
        "type": "input",
        "description": "Data enable input, active LOW: when E is LOW the outputs Qn take the state of Dn at the LOW-to-HIGH CP transition, and E must be stable one set-up time before that transition."
      },
      {
        "number": "2",
        "name": "Q0",
        "type": "output",
        "description": "Flip-flop output 0, which assumes the state of D0 on the LOW-to-HIGH clock transition when E is LOW."
      },
      {
        "number": "3",
        "name": "D0",
        "type": "input",
        "description": "Data input 0, sampled on the LOW-to-HIGH CP transition within the set-up and hold times; inputs include clamp diodes so input voltages above VCC are allowed with a current limiting resistor (IIK limited to ±20 mA)."
      },
      {
        "number": "4",
        "name": "D1",
        "type": "input",
        "description": "Data input 1, sampled on the LOW-to-HIGH CP transition within the set-up and hold times; inputs include clamp diodes so input voltages above VCC are allowed with a current limiting resistor (IIK limited to ±20 mA)."
      },
      {
        "number": "5",
        "name": "Q1",
        "type": "output",
        "description": "Flip-flop output 1, which assumes the state of D1 on the LOW-to-HIGH clock transition when E is LOW."
      },
      {
        "number": "6",
        "name": "Q2",
        "type": "output",
        "description": "Flip-flop output 2, which assumes the state of D2 on the LOW-to-HIGH clock transition when E is LOW."
      },
      {
        "number": "7",
        "name": "D2",
        "type": "input",
        "description": "Data input 2, sampled on the LOW-to-HIGH CP transition within the set-up and hold times; inputs include clamp diodes so input voltages above VCC are allowed with a current limiting resistor (IIK limited to ±20 mA)."
      },
      {
        "number": "8",
        "name": "D3",
        "type": "input",
        "description": "Data input 3, sampled on the LOW-to-HIGH CP transition within the set-up and hold times; inputs include clamp diodes so input voltages above VCC are allowed with a current limiting resistor (IIK limited to ±20 mA)."
      },
      {
        "number": "9",
        "name": "Q3",
        "type": "output",
        "description": "Flip-flop output 3, which assumes the state of D3 on the LOW-to-HIGH clock transition when E is LOW."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (0 V) reference for all voltages on the device."
      },
      {
        "number": "11",
        "name": "CP",
        "type": "input",
        "description": "Clock input, edge triggered on the LOW-to-HIGH transition; the Qn outputs update only on this edge."
      },
      {
        "number": "12",
        "name": "Q4",
        "type": "output",
        "description": "Flip-flop output 4, which assumes the state of D4 on the LOW-to-HIGH clock transition when E is LOW."
      },
      {
        "number": "13",
        "name": "D4",
        "type": "input",
        "description": "Data input 4, sampled on the LOW-to-HIGH CP transition within the set-up and hold times; inputs include clamp diodes so input voltages above VCC are allowed with a current limiting resistor (IIK limited to ±20 mA)."
      },
      {
        "number": "14",
        "name": "D5",
        "type": "input",
        "description": "Data input 5, sampled on the LOW-to-HIGH CP transition within the set-up and hold times; inputs include clamp diodes so input voltages above VCC are allowed with a current limiting resistor (IIK limited to ±20 mA)."
      },
      {
        "number": "15",
        "name": "Q5",
        "type": "output",
        "description": "Flip-flop output 5, which assumes the state of D5 on the LOW-to-HIGH clock transition when E is LOW."
      },
      {
        "number": "16",
        "name": "Q6",
        "type": "output",
        "description": "Flip-flop output 6, which assumes the state of D6 on the LOW-to-HIGH clock transition when E is LOW."
      },
      {
        "number": "17",
        "name": "D6",
        "type": "input",
        "description": "Data input 6, sampled on the LOW-to-HIGH CP transition within the set-up and hold times; inputs include clamp diodes so input voltages above VCC are allowed with a current limiting resistor (IIK limited to ±20 mA)."
      },
      {
        "number": "18",
        "name": "D7",
        "type": "input",
        "description": "Data input 7, sampled on the LOW-to-HIGH CP transition within the set-up and hold times; inputs include clamp diodes so input voltages above VCC are allowed with a current limiting resistor (IIK limited to ±20 mA)."
      },
      {
        "number": "19",
        "name": "Q7",
        "type": "output",
        "description": "Flip-flop output 7, which assumes the state of D7 on the LOW-to-HIGH clock transition when E is LOW."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage: 2.0 V to 6.0 V for 74HC377 and 4.5 V to 5.5 V for 74HCT377 recommended, with an absolute maximum of -0.5 V to +7 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": [],
        "pages_sent": 15,
        "cost_usd": 0.0825,
        "at": "2026-10-18T14:03:53"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8579711869245767680",
        "pages": 15,
        "sha256": "d3e6848eadc38fcc",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "74hc377d.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          10.3,
          12.8,
          2.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "59a10b341e6972b31d81802a048060326da627d8b92dcf4263064f4f62ec808e",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74hc377d-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          10.3,
          12.8,
          2.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "b98c1ad3afce1388fecc66cc8ad11c40feaf2c0b5072c08c446374917f58aef7",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}