HT74LS247ANZ

{
  "slug": "ht74ls247anz",
  "version": "0.1.0",
  "type": "component",
  "description": "HTCSEMI Buffers, Drivers, Receivers, Transceivers, DIP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "ht74ls247anz",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ht74ls247anz.kicad_sym",
    "ht74ls247anz.kicad_mod",
    "ht74ls247anz.glb",
    "ht74ls247anz.step",
    "ht74ls247anz.lbr",
    "docs/hero.png",
    "docs/ht74ls247anz-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ht74ls247anz-hero.glb",
    "ht74ls247anz-hero.overlay.json",
    "ht74ls247anz-etched.glb"
  ],
  "component": {
    "mpn": "HT74LS247ANZ",
    "manufacturer": "HTCSEMI",
    "package": "DIP-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Buffers, Drivers, Receivers, Transceivers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/0af8a93a25db5853fef8a5f1770c4e59.pdf",
    "parts": {
      "symbol": "ht74ls247anz.kicad_sym",
      "footprint": "ht74ls247anz.kicad_mod",
      "model_3d": "ht74ls247anz-hero.glb",
      "model_3d_plain": "ht74ls247anz-etched.glb",
      "model_3d_step": "ht74ls247anz-etched.step",
      "model_3d_step_plain": "ht74ls247anz.step",
      "lbr": "ht74ls247anz.lbr"
    },
    "distributor_links": {
      "lcsc": "C5857712"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T21:21:00Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 800 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "B",
        "type": "input",
        "description": "BCD input B, with input LOW voltage max 0.8 V and HIGH min 2.0 V."
      },
      {
        "number": "2",
        "name": "C",
        "type": "input",
        "description": "BCD input C, with input LOW voltage max 0.8 V and HIGH min 2.0 V."
      },
      {
        "number": "3",
        "name": "LT",
        "type": "input",
        "description": "Lamp test input, active low; with BI/RBO open or high, a low turns all segment outputs on."
      },
      {
        "number": "4",
        "name": "BI/RBO",
        "type": "bidirectional",
        "description": "Blanking input (active low turns all segments off) or ripple-blanking output (wire-AND), with IOH of -50 µA and IOL of 3.2 mA max."
      },
      {
        "number": "5",
        "name": "RBI",
        "type": "input",
        "description": "Ripple-blanking input, active low; blanks a decimal zero when A-D are low and LT is high, and must be open or high if zero blanking is not desired."
      },
      {
        "number": "6",
        "name": "D",
        "type": "input",
        "description": "BCD input D, with input LOW voltage max 0.8 V and HIGH min 2.0 V."
      },
      {
        "number": "7",
        "name": "A",
        "type": "input",
        "description": "BCD input A, with input LOW voltage max 0.8 V and HIGH min 2.0 V."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "9",
        "name": "e",
        "type": "output",
        "description": "Active-low open-collector segment e output, rated 15 V off-state and 24 mA on-state sink current."
      },
      {
        "number": "10",
        "name": "d",
        "type": "output",
        "description": "Active-low open-collector segment d output, rated 15 V off-state and 24 mA on-state sink current."
      },
      {
        "number": "11",
        "name": "c",
        "type": "output",
        "description": "Active-low open-collector segment c output, rated 15 V off-state and 24 mA on-state sink current."
      },
      {
        "number": "12",
        "name": "b",
        "type": "output",
        "description": "Active-low open-collector segment b output, rated 15 V off-state and 24 mA on-state sink current."
      },
      {
        "number": "13",
        "name": "a",
        "type": "output",
        "description": "Active-low open-collector segment a output, rated 15 V off-state and 24 mA on-state sink current."
      },
      {
        "number": "14",
        "name": "g",
        "type": "output",
        "description": "Active-low open-collector segment g output, rated 15 V off-state and 24 mA on-state sink current."
      },
      {
        "number": "15",
        "name": "f",
        "type": "output",
        "description": "Active-low open-collector segment f output, rated 15 V off-state and 24 mA on-state sink current."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, 4.75 V min, 5.0 V typ, 5.25 V max."
      }
    ],
    "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: Datasheet gives conflicting temperature ranges: operating range table says 0 to 70 °C, while the ord; Pin numbers were taken from the logic diagram (page 3) and agree with the top-view pinout (page 2). "
        ],
        "pages_sent": 7,
        "cost_usd": 0.0738,
        "at": "2026-10-23T21:20:04"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/0af8a93a25db5853fef8a5f1770c4e59.pdf",
        "pages": 7,
        "sha256": "75e82e17e30d5eb5",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ht74ls247anz.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,
          19.177,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "17a30b1f0ab3fd5384a1231e3c63c394888d5b952c542a8c189e023ed3467464",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ht74ls247anz-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,
          19.177,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "1962566d86a9b136516e3085be864e65a862947c06ea9d4338e58d41496f6559",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}