SN74HC90N

{
  "slug": "sn74hc90n",
  "version": "0.1.0",
  "type": "component",
  "description": "lingxingic Counters, Dividers, DIP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "sn74hc90n",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn74hc90n.kicad_sym",
    "sn74hc90n.kicad_mod",
    "sn74hc90n.glb",
    "sn74hc90n.step",
    "sn74hc90n.lbr",
    "docs/hero.png",
    "docs/sn74hc90n-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sn74hc90n-hero.glb",
    "sn74hc90n-hero.overlay.json",
    "sn74hc90n-etched.glb"
  ],
  "component": {
    "mpn": "SN74HC90N",
    "manufacturer": "lingxingic",
    "package": "DIP-14",
    "pin_count": 14,
    "category": "Logic",
    "subcategory": "Counters, Dividers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/32644c49760a934212f96dc4e5e263e2.pdf",
    "parts": {
      "symbol": "sn74hc90n.kicad_sym",
      "footprint": "sn74hc90n.kicad_mod",
      "model_3d": "sn74hc90n-hero.glb",
      "model_3d_plain": "sn74hc90n-etched.glb",
      "model_3d_step": "sn74hc90n-etched.step",
      "model_3d_step_plain": "sn74hc90n.step",
      "lbr": "sn74hc90n.lbr"
    },
    "distributor_links": {
      "lcsc": "C22436662"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T18:21:44Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 886 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "CKB",
        "type": "input",
        "description": "÷5 section clock input, active on the falling edge; connect QA to CKB for BCD count."
      },
      {
        "number": "2",
        "name": "R0(1)",
        "type": "input",
        "description": "Master reset input; with R0(2) both HIGH (and R9 inputs not both HIGH) the outputs QD-QA are reset to LOW."
      },
      {
        "number": "3",
        "name": "R0(2)",
        "type": "input",
        "description": "Master reset input; with R0(1) both HIGH (and R9 inputs not both HIGH) the outputs QD-QA are reset to LOW."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "5",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, 2.0 to 6.0 V recommended for SN74HC90 (absolute maximum 7 V)."
      },
      {
        "number": "6",
        "name": "R9(1)",
        "type": "input",
        "description": "Master set input (preset 9); with R9(2) both HIGH the outputs are set to 1001 (QD and QA HIGH)."
      },
      {
        "number": "7",
        "name": "R9(2)",
        "type": "input",
        "description": "Master set input (preset 9); with R9(1) both HIGH the outputs are set to 1001 (QD and QA HIGH)."
      },
      {
        "number": "8",
        "name": "QC",
        "type": "output",
        "description": "Output from the ÷5 section."
      },
      {
        "number": "9",
        "name": "QB",
        "type": "output",
        "description": "Output from the ÷5 section."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (0 V)."
      },
      {
        "number": "11",
        "name": "QD",
        "type": "output",
        "description": "Output from the ÷5 section; connect QD to CKA for bi-quinary count."
      },
      {
        "number": "12",
        "name": "QA",
        "type": "output",
        "description": "Output from the ÷2 section."
      },
      {
        "number": "13",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "14",
        "name": "CKA",
        "type": "input",
        "description": "÷2 section clock input, active on the falling edge."
      }
    ],
    "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 pin configuration figure (page 6) has no text in the extraction, so the pinout comes only from t"
        ],
        "pages_sent": 18,
        "cost_usd": 0.1159,
        "at": "2026-10-23T18:21:27"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/32644c49760a934212f96dc4e5e263e2.pdf",
        "pages": 18,
        "sha256": "91ebe5c65ae35661",
        "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": "sn74hc90n.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": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn74hc90n-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": "257cfd91ea75921f9aa55c46d72b0387142985fe896adf9597f9c4ff75115e95",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}