MC74LCX157DTR2G

{
  "slug": "mc74lcx157dtr2g",
  "version": "0.1.0",
  "type": "component",
  "description": "onsemi Signal Switches, Multiplexers, Decoders, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "mc74lcx157dtr2g",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "mc74lcx157dtr2g.kicad_sym",
    "mc74lcx157dtr2g.kicad_mod",
    "mc74lcx157dtr2g.glb",
    "mc74lcx157dtr2g.step",
    "mc74lcx157dtr2g.lbr",
    "docs/hero.png",
    "docs/mc74lcx157dtr2g-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "mc74lcx157dtr2g-hero.glb",
    "mc74lcx157dtr2g-hero.overlay.json",
    "mc74lcx157dtr2g-etched.glb"
  ],
  "component": {
    "mpn": "MC74LCX157DTR2G",
    "manufacturer": "onsemi",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Signal Switches, Multiplexers, Decoders",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/c6b5d97d6ae45cfe25213de8f3f9a31b.pdf",
    "parts": {
      "symbol": "mc74lcx157dtr2g.kicad_sym",
      "footprint": "mc74lcx157dtr2g.kicad_mod",
      "model_3d": "mc74lcx157dtr2g-hero.glb",
      "model_3d_plain": "mc74lcx157dtr2g-etched.glb",
      "model_3d_step": "mc74lcx157dtr2g-etched.step",
      "model_3d_step_plain": "mc74lcx157dtr2g.step",
      "lbr": "mc74lcx157dtr2g.lbr"
    },
    "distributor_links": {
      "lcsc": "C904095",
      "digikey": "488-MC74LCX157DTR2GTR-ND",
      "mouser": "863-MC74LCX157DTR2G"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T05:02:52Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "488-MC74LCX157DTR2GTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "863-MC74LCX157DTR2G",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "S",
        "type": "input",
        "description": "Select input that chooses between Source 0 (I0n) and Source 1 (I1n) data inputs; 5.5 V tolerant, do not float."
      },
      {
        "number": "2",
        "name": "I0a",
        "type": "input",
        "description": "Source 0 data input for channel a."
      },
      {
        "number": "3",
        "name": "I1a",
        "type": "input",
        "description": "Source 1 data input for channel a."
      },
      {
        "number": "4",
        "name": "Za",
        "type": "output",
        "description": "Channel a output presenting the selected data in true (non-inverted) form, 24 mA drive at VCC 3.0-3.6 V."
      },
      {
        "number": "5",
        "name": "I0b",
        "type": "input",
        "description": "Source 0 data input for channel b."
      },
      {
        "number": "6",
        "name": "I1b",
        "type": "input",
        "description": "Source 1 data input for channel b."
      },
      {
        "number": "7",
        "name": "Zb",
        "type": "output",
        "description": "Channel b output presenting the selected data in true (non-inverted) form, 24 mA drive at VCC 3.0-3.6 V."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin (0 V)."
      },
      {
        "number": "9",
        "name": "Zd",
        "type": "output",
        "description": "Channel d output presenting the selected data in true (non-inverted) form, 24 mA drive at VCC 3.0-3.6 V."
      },
      {
        "number": "10",
        "name": "I1d",
        "type": "input",
        "description": "Source 1 data input for channel d."
      },
      {
        "number": "11",
        "name": "I0d",
        "type": "input",
        "description": "Source 0 data input for channel d."
      },
      {
        "number": "12",
        "name": "Zc",
        "type": "output",
        "description": "Channel c output presenting the selected data in true (non-inverted) form, 24 mA drive at VCC 3.0-3.6 V."
      },
      {
        "number": "13",
        "name": "I1c",
        "type": "input",
        "description": "Source 1 data input for channel c."
      },
      {
        "number": "14",
        "name": "I0c",
        "type": "input",
        "description": "Source 0 data input for channel c."
      },
      {
        "number": "15",
        "name": "E̅",
        "type": "input",
        "description": "Active-low enable input; when high all outputs are forced low; do not float."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply pin, 2.0 to 3.6 V operating (2.3 to 3.6 V designed), absolute maximum 7.0 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": "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": 7,
        "cost_usd": 0.2193,
        "at": "2026-10-18T04:58:16"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/c6b5d97d6ae45cfe25213de8f3f9a31b.pdf",
        "pages": 7,
        "sha256": "8803ec7a59ce8b58",
        "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": "mc74lcx157dtr2g.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5.0,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "6ad5e98224d02a427d9a6b929a28dbc158b9925fba5adec12db05079f1016948",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mc74lcx157dtr2g-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5.0,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "8d9c1bb7df570dba41ddcfdb3c4fac280a15c1be48b00878b58523c6a0dbcabb",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}