SN74LS74DR

{
  "slug": "sn74ls74dr",
  "version": "0.1.0",
  "type": "component",
  "description": "lingxingic Flip Flops, SOP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "sn74ls74dr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn74ls74dr.kicad_sym",
    "sn74ls74dr.kicad_mod",
    "sn74ls74dr.glb",
    "sn74ls74dr.step",
    "sn74ls74dr.lbr",
    "docs/hero.png",
    "docs/sn74ls74dr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sn74ls74dr-hero.glb",
    "sn74ls74dr-hero.overlay.json",
    "sn74ls74dr-etched.glb"
  ],
  "component": {
    "mpn": "SN74LS74DR",
    "manufacturer": "lingxingic",
    "package": "SOP-14",
    "pin_count": 14,
    "category": "Logic",
    "subcategory": "Flip Flops",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/dc1fa80cdfa7691e13247e9f53222339.pdf",
    "parts": {
      "symbol": "sn74ls74dr.kicad_sym",
      "footprint": "sn74ls74dr.kicad_mod",
      "model_3d": "sn74ls74dr-hero.glb",
      "model_3d_plain": "sn74ls74dr-etched.glb",
      "model_3d_step": "sn74ls74dr-etched.step",
      "model_3d_step_plain": "sn74ls74dr.step",
      "lbr": "sn74ls74dr.lbr"
    },
    "distributor_links": {
      "lcsc": "C22466307"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T03:11:31Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1RD",
        "type": "input",
        "description": "Asynchronous reset input of flip-flop 1, active low."
      },
      {
        "number": "2",
        "name": "1D",
        "type": "input",
        "description": "Data input of flip-flop 1."
      },
      {
        "number": "3",
        "name": "1CP",
        "type": "input",
        "description": "Clock input of flip-flop 1, edge-triggered on the low-to-high transition."
      },
      {
        "number": "4",
        "name": "1SD",
        "type": "input",
        "description": "Asynchronous set input of flip-flop 1, active low."
      },
      {
        "number": "5",
        "name": "1Q",
        "type": "output",
        "description": "True output of flip-flop 1."
      },
      {
        "number": "6",
        "name": "1Q̅",
        "type": "output",
        "description": "Complementary (inverted) output of flip-flop 1."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (0 V)."
      },
      {
        "number": "8",
        "name": "2Q̅",
        "type": "output",
        "description": "Complementary (inverted) output of flip-flop 2."
      },
      {
        "number": "9",
        "name": "2Q",
        "type": "output",
        "description": "True output of flip-flop 2."
      },
      {
        "number": "10",
        "name": "2SD",
        "type": "input",
        "description": "Asynchronous set input of flip-flop 2, active low."
      },
      {
        "number": "11",
        "name": "2CP",
        "type": "input",
        "description": "Clock input of flip-flop 2, edge-triggered on the low-to-high transition."
      },
      {
        "number": "12",
        "name": "2D",
        "type": "input",
        "description": "Data input of flip-flop 2."
      },
      {
        "number": "13",
        "name": "2RD",
        "type": "input",
        "description": "Asynchronous reset input of flip-flop 2, active low."
      },
      {
        "number": "14",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, recommended 2.0 V to 6.0 V (absolute maximum 7 V)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The MPN SN74LS74DR maps to the SOP14 tape-and-reel variant (marking LS74, 2500 pcs/reel, order code "
        ],
        "pages_sent": 20,
        "cost_usd": 0.108,
        "at": "2026-10-23T03:11:17"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/dc1fa80cdfa7691e13247e9f53222339.pdf",
        "pages": 20,
        "sha256": "3b7790b104e063fb",
        "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": "sn74ls74dr.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": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn74ls74dr-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": "6e5f3d9f3b3fec895229443afc964f79f12a0bd60c0772504fd5ab0ea3e90ce4",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}