XD74LS42

{
  "slug": "xd74ls42",
  "version": "0.1.0",
  "type": "component",
  "description": "XINLUDA Signal Switches, Multiplexers, Decoders, DIP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "xd74ls42",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "xd74ls42.kicad_sym",
    "xd74ls42.kicad_mod",
    "xd74ls42.glb",
    "xd74ls42.step",
    "xd74ls42.lbr",
    "docs/hero.png",
    "docs/xd74ls42-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "xd74ls42-hero.glb",
    "xd74ls42-hero.overlay.json",
    "xd74ls42-etched.glb"
  ],
  "component": {
    "mpn": "XD74LS42",
    "manufacturer": "XINLUDA",
    "package": "DIP-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Signal Switches, Multiplexers, Decoders",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588915604422475776",
    "parts": {
      "symbol": "xd74ls42.kicad_sym",
      "footprint": "xd74ls42.kicad_mod",
      "model_3d": "xd74ls42-hero.glb",
      "model_3d_plain": "xd74ls42-etched.glb",
      "model_3d_step": "xd74ls42-etched.step",
      "model_3d_step_plain": "xd74ls42.step",
      "lbr": "xd74ls42.lbr"
    },
    "distributor_links": {
      "lcsc": "C609757"
    },
    "distributor_check": {
      "checked_at": "2026-10-16T03:20:55Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "0",
        "type": "output",
        "description": "Active-low decimal output 0, low only for BCD input 0000; IOL max 8 mA, IOH -400 µA."
      },
      {
        "number": "2",
        "name": "1",
        "type": "output",
        "description": "Active-low decimal output 1, low only for BCD input 0001; IOL max 8 mA, IOH -400 µA."
      },
      {
        "number": "3",
        "name": "2",
        "type": "output",
        "description": "Active-low decimal output 2, low only for BCD input 0010; IOL max 8 mA, IOH -400 µA."
      },
      {
        "number": "4",
        "name": "3",
        "type": "output",
        "description": "Active-low decimal output 3, low only for BCD input 0011; IOL max 8 mA, IOH -400 µA."
      },
      {
        "number": "5",
        "name": "4",
        "type": "output",
        "description": "Active-low decimal output 4, low only for BCD input 0100; IOL max 8 mA, IOH -400 µA."
      },
      {
        "number": "6",
        "name": "5",
        "type": "output",
        "description": "Active-low decimal output 5, low only for BCD input 0101; IOL max 8 mA, IOH -400 µA."
      },
      {
        "number": "7",
        "name": "6",
        "type": "output",
        "description": "Active-low decimal output 6, low only for BCD input 0110; IOL max 8 mA, IOH -400 µA."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground, 0 V reference."
      },
      {
        "number": "9",
        "name": "7",
        "type": "output",
        "description": "Active-low decimal output 7, low only for BCD input 0111; IOL max 8 mA, IOH -400 µA."
      },
      {
        "number": "10",
        "name": "8",
        "type": "output",
        "description": "Active-low decimal output 8, low only for BCD input 1000; IOL max 8 mA, IOH -400 µA."
      },
      {
        "number": "11",
        "name": "9",
        "type": "output",
        "description": "Active-low decimal output 9, low only for BCD input 1001; IOL max 8 mA, IOH -400 µA."
      },
      {
        "number": "12",
        "name": "D",
        "type": "input",
        "description": "BCD input D (weight 8, MSB), diode-clamped; VIH min 2 V, VIL max 0.8 V, max input voltage 7 V."
      },
      {
        "number": "13",
        "name": "C",
        "type": "input",
        "description": "BCD input C (weight 4), diode-clamped; VIH min 2 V, VIL max 0.8 V, max input voltage 7 V."
      },
      {
        "number": "14",
        "name": "B",
        "type": "input",
        "description": "BCD input B (weight 2), diode-clamped; VIH min 2 V, VIL max 0.8 V, max input voltage 7 V."
      },
      {
        "number": "15",
        "name": "A",
        "type": "input",
        "description": "BCD input A (weight 1, LSB), diode-clamped; VIH min 2 V, VIL max 0.8 V, max input voltage 7 V."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, 4.75 V to 5.25 V recommended, 7 V absolute maximum."
      }
    ],
    "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+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 8,
        "cost_usd": 0.1852,
        "at": "2026-10-16T03:20:36"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588915604422475776",
        "pages": 8,
        "sha256": "7013e2ac00e79456",
        "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": "xd74ls42.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": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "xd74ls42-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": "d7894b95a36affd5089c6db65b7530f704834811cd3a478218d3e93a6d539aef",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}