XL74LS157

{
  "slug": "xl74ls157",
  "version": "0.1.0",
  "type": "component",
  "description": "XINLUDA Signal Switches, Multiplexers, Decoders, SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "xl74ls157",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "xl74ls157.kicad_sym",
    "xl74ls157.kicad_mod",
    "xl74ls157.glb",
    "xl74ls157.step",
    "xl74ls157.lbr",
    "docs/hero.png",
    "docs/xl74ls157-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "xl74ls157-hero.glb",
    "xl74ls157-hero.overlay.json",
    "xl74ls157-etched.glb"
  ],
  "component": {
    "mpn": "XL74LS157",
    "manufacturer": "XINLUDA",
    "package": "SOP-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Signal Switches, Multiplexers, Decoders",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588908345361108992",
    "parts": {
      "symbol": "xl74ls157.kicad_sym",
      "footprint": "xl74ls157.kicad_mod",
      "model_3d": "xl74ls157-hero.glb",
      "model_3d_plain": "xl74ls157-etched.glb",
      "model_3d_step": "xl74ls157-etched.step",
      "model_3d_step_plain": "xl74ls157.step",
      "lbr": "xl74ls157.lbr"
    },
    "distributor_links": {
      "lcsc": "C707097"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T22:08:49Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "A/B",
        "type": "input",
        "description": "Select input that routes the A inputs (low) or B inputs (high) to the outputs; input high-level min 2 V, max 7 V."
      },
      {
        "number": "2",
        "name": "1A",
        "type": "input",
        "description": "Channel 1 data input A, selected when A/B is low."
      },
      {
        "number": "3",
        "name": "1B",
        "type": "input",
        "description": "Channel 1 data input B, selected when A/B is high."
      },
      {
        "number": "4",
        "name": "1Y",
        "type": "output",
        "description": "Channel 1 data output, true data, with IOL up to 8 mA and IOH of -400 µA."
      },
      {
        "number": "5",
        "name": "2A",
        "type": "input",
        "description": "Channel 2 data input A, selected when A/B is low."
      },
      {
        "number": "6",
        "name": "2B",
        "type": "input",
        "description": "Channel 2 data input B, selected when A/B is high."
      },
      {
        "number": "7",
        "name": "2Y",
        "type": "output",
        "description": "Channel 2 data output, true data, with IOL up to 8 mA and IOH of -400 µA."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the supply."
      },
      {
        "number": "9",
        "name": "3Y",
        "type": "output",
        "description": "Channel 3 data output, true data, with IOL up to 8 mA and IOH of -400 µA."
      },
      {
        "number": "10",
        "name": "3B",
        "type": "input",
        "description": "Channel 3 data input B, selected when A/B is high."
      },
      {
        "number": "11",
        "name": "3A",
        "type": "input",
        "description": "Channel 3 data input A, selected when A/B is low."
      },
      {
        "number": "12",
        "name": "4Y",
        "type": "output",
        "description": "Channel 4 data output, true data, with IOL up to 8 mA and IOH of -400 µA."
      },
      {
        "number": "13",
        "name": "4B",
        "type": "input",
        "description": "Channel 4 data input B, selected when A/B is high."
      },
      {
        "number": "14",
        "name": "4A",
        "type": "input",
        "description": "Channel 4 data input A, selected when A/B is low."
      },
      {
        "number": "15",
        "name": "G",
        "type": "input",
        "description": "Strobe input; when high all outputs are forced low, and when low the selected data passes to the outputs."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, recommended 4.75 V to 5.25 V (nominal 5 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+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The ordering table on page 7 lists XL74LS157 as SOP16. The pinout was read from the page 1 top-view ",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 8,
        "cost_usd": 0.1659,
        "at": "2026-10-17T22:07:12"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588908345361108992",
        "pages": 8,
        "sha256": "13c66c29b4233e5b",
        "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": "xl74ls157.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          9.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "xl74ls157-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          9.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f2023d248b42b5ac7ad7c47401d2fba1f05e35e76c10ba505165166789466750",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}