CD74HC73E

{
  "slug": "cd74hc73e",
  "version": "0.1.0",
  "type": "component",
  "description": "lingxingic Flip Flops, DIP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "cd74hc73e",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cd74hc73e.kicad_sym",
    "cd74hc73e.kicad_mod",
    "cd74hc73e.glb",
    "cd74hc73e.step",
    "cd74hc73e.lbr",
    "docs/hero.png",
    "docs/cd74hc73e-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cd74hc73e-hero.glb",
    "cd74hc73e-hero.overlay.json",
    "cd74hc73e-etched.glb"
  ],
  "component": {
    "mpn": "CD74HC73E",
    "manufacturer": "lingxingic",
    "package": "DIP-14",
    "pin_count": 14,
    "category": "Logic",
    "subcategory": "Flip Flops",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/4a8fe50993a19e07230973f87bf99a5c.pdf",
    "parts": {
      "symbol": "cd74hc73e.kicad_sym",
      "footprint": "cd74hc73e.kicad_mod",
      "model_3d": "cd74hc73e-hero.glb",
      "model_3d_plain": "cd74hc73e-etched.glb",
      "model_3d_step": "cd74hc73e-etched.step",
      "model_3d_step_plain": "cd74hc73e.step",
      "lbr": "cd74hc73e.lbr"
    },
    "distributor_links": {
      "lcsc": "C48533473",
      "digikey": "2156-CD74HC73E-ND",
      "mouser": "595-CD74HC73E"
    },
    "distributor_check": {
      "checked_at": "2026-10-13T18:45:50Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2156-CD74HC73E-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-CD74HC73E",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1CP",
        "type": "input",
        "description": "Clock input for flip-flop 1, triggered on the HIGH-to-LOW edge."
      },
      {
        "number": "2",
        "name": "1R",
        "type": "input",
        "description": "Asynchronous reset input for flip-flop 1, active LOW; a LOW forces 1Q LOW and 1Q̅ HIGH regardless of clock."
      },
      {
        "number": "3",
        "name": "1K",
        "type": "input",
        "description": "Synchronous K input for flip-flop 1, sampled at the HIGH-to-LOW clock transition."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage: 2.0 V to 6.0 V for CD74HC73, 4.5 V to 5.5 V for CD74HCT73."
      },
      {
        "number": "5",
        "name": "2CP",
        "type": "input",
        "description": "Clock input for flip-flop 2, triggered on the HIGH-to-LOW edge."
      },
      {
        "number": "6",
        "name": "2R",
        "type": "input",
        "description": "Asynchronous reset input for flip-flop 2, active LOW; a LOW forces 2Q LOW and 2Q̅ HIGH regardless of clock."
      },
      {
        "number": "7",
        "name": "2J",
        "type": "input",
        "description": "Synchronous J input for flip-flop 2, sampled at the HIGH-to-LOW clock transition."
      },
      {
        "number": "8",
        "name": "2Q̅",
        "type": "output",
        "description": "Complement output of flip-flop 2."
      },
      {
        "number": "9",
        "name": "2Q",
        "type": "output",
        "description": "True output of flip-flop 2."
      },
      {
        "number": "10",
        "name": "2K",
        "type": "input",
        "description": "Synchronous K input for flip-flop 2, sampled at the HIGH-to-LOW clock transition."
      },
      {
        "number": "11",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (0 V) reference for all voltages."
      },
      {
        "number": "12",
        "name": "1Q",
        "type": "output",
        "description": "True output of flip-flop 1."
      },
      {
        "number": "13",
        "name": "1Q̅",
        "type": "output",
        "description": "Complement output of flip-flop 1."
      },
      {
        "number": "14",
        "name": "1J",
        "type": "input",
        "description": "Synchronous J input for flip-flop 1, sampled at the HIGH-to-LOW clock transition."
      }
    ],
    "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": [
          "extractor flagged: The pin table (page 5) assigns VCC to pin 4 and GND to pin 11, with 1J on pin 14. The Figure 2 pin-c; Overbars on the complement outputs (2Q̅, 1Q̅) were lost in text extraction. Names are inferred from ; The output schema has no field for headline specs, so the supply range (CD74HC73 2-6 V, CD74HCT73 4."
        ],
        "pages_sent": 17,
        "cost_usd": 0.0679,
        "at": "2026-10-13T18:45:34"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/4a8fe50993a19e07230973f87bf99a5c.pdf",
        "pages": 17,
        "sha256": "3d404d6b159fde46",
        "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"
    },
    "models_3d": [
      {
        "file": "cd74hc73e.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          19.05,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "3dae072a95c64bee0d1e58be8e75383639f5017ab982de1749d05808a4eed058",
        "checked": "2026-10-13",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cd74hc73e-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          19.05,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "e43bc615274568fef27e5d55b1617b3080b23753d70a134ac7023b1cb454c34f",
        "checked": "2026-10-13",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}