74HCT164D

{
  "slug": "74hct164d",
  "version": "0.1.0",
  "type": "component",
  "description": "Nexperia Shift Registers, SO-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "74hct164d",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "74hct164d.kicad_sym",
    "74hct164d.kicad_mod",
    "74hct164d.glb",
    "74hct164d.step",
    "74hct164d.lbr",
    "docs/hero.png",
    "docs/74hct164d-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "74hct164d-hero.glb",
    "74hct164d-hero.overlay.json",
    "74hct164d-etched.glb"
  ],
  "component": {
    "mpn": "74HCT164D",
    "manufacturer": "Nexperia",
    "package": "SO-14",
    "pin_count": 14,
    "category": "Logic",
    "subcategory": "Shift Registers",
    "datasheet": "https://assets.nexperia.com/documents/data-sheet/74HCT164D.pdf",
    "parts": {
      "symbol": "74hct164d.kicad_sym",
      "footprint": "74hct164d.kicad_mod",
      "model_3d": "74hct164d-hero.glb",
      "model_3d_plain": "74hct164d-etched.glb",
      "model_3d_step": "74hct164d-etched.step",
      "model_3d_step_plain": "74hct164d.step",
      "lbr": "74hct164d.lbr"
    },
    "distributor_links": {
      "lcsc": "C547397",
      "mouser": "771-74HCT164D"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T22:06:56Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": "771-74HCT164D",
        "status": "found",
        "lifecycle": "End of Life"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "DSA",
        "type": "input",
        "description": "Serial data input DSA; either DSA or DSB can be used as an active HIGH enable for data entry through the other input."
      },
      {
        "number": "2",
        "name": "DSB",
        "type": "input",
        "description": "Serial data input DSB; either DSB or DSA can be used as an active HIGH enable for data entry through the other input."
      },
      {
        "number": "3",
        "name": "Q0",
        "type": "output",
        "description": "Parallel data output Q0; forced LOW by an active LOW master reset (MR)."
      },
      {
        "number": "4",
        "name": "Q1",
        "type": "output",
        "description": "Parallel data output Q1; forced LOW by an active LOW master reset (MR)."
      },
      {
        "number": "5",
        "name": "Q2",
        "type": "output",
        "description": "Parallel data output Q2; forced LOW by an active LOW master reset (MR)."
      },
      {
        "number": "6",
        "name": "Q3",
        "type": "output",
        "description": "Parallel data output Q3; forced LOW by an active LOW master reset (MR)."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (0 V) reference for all voltages."
      },
      {
        "number": "8",
        "name": "CP",
        "type": "input",
        "description": "Clock input; data is shifted on the LOW-to-HIGH (edge-triggered) transition."
      },
      {
        "number": "9",
        "name": "MR",
        "type": "input",
        "description": "Asynchronous master reset input (active LOW); a LOW clears the register and forces all outputs LOW independently of other inputs."
      },
      {
        "number": "10",
        "name": "Q4",
        "type": "output",
        "description": "Parallel data output Q4; forced LOW by an active LOW master reset (MR)."
      },
      {
        "number": "11",
        "name": "Q5",
        "type": "output",
        "description": "Parallel data output Q5; forced LOW by an active LOW master reset (MR)."
      },
      {
        "number": "12",
        "name": "Q6",
        "type": "output",
        "description": "Parallel data output Q6; forced LOW by an active LOW master reset (MR)."
      },
      {
        "number": "13",
        "name": "Q7",
        "type": "output",
        "description": "Parallel data output Q7; forced LOW by an active LOW master reset (MR)."
      },
      {
        "number": "14",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply voltage; the device operates from 2.0 V to 6.0 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": null,
        "consensus": "skipped (clean text read)",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 16,
        "cost_usd": 0.0022,
        "at": "2026-10-27T22:06:44"
      },
      "datasheet": {
        "url": "https://assets.nexperia.com/documents/data-sheet/74HCT164D.pdf",
        "pages": 16,
        "sha256": "aa299aaeb852d99f",
        "source_tier": "mfr"
      },
      "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": [
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        "file": "74hct164d.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        ],
        "zmin_mm": 0.02,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "9549d4efd907a2d0e88159d0def354d29e7c48eeff6d33604a3bf4895a15611f",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74hct164d-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}