MC74LCX244DTR2G

{
  "slug": "mc74lcx244dtr2g",
  "version": "0.1.0",
  "type": "component",
  "description": "onsemi Buffers, Drivers, Receivers, Transceivers, ETSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "mc74lcx244dtr2g",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "mc74lcx244dtr2g.kicad_sym",
    "mc74lcx244dtr2g.kicad_mod",
    "mc74lcx244dtr2g.glb",
    "mc74lcx244dtr2g.step",
    "mc74lcx244dtr2g.lbr",
    "docs/hero.png",
    "docs/mc74lcx244dtr2g-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "mc74lcx244dtr2g-hero.glb",
    "mc74lcx244dtr2g-hero.overlay.json",
    "mc74lcx244dtr2g-etched.glb"
  ],
  "component": {
    "mpn": "MC74LCX244DTR2G",
    "manufacturer": "onsemi",
    "package": "ETSSOP-20",
    "pin_count": 21,
    "category": "Logic",
    "subcategory": "Buffers, Drivers, Receivers, Transceivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588883740277399552",
    "parts": {
      "symbol": "mc74lcx244dtr2g.kicad_sym",
      "footprint": "mc74lcx244dtr2g.kicad_mod",
      "model_3d": "mc74lcx244dtr2g-hero.glb",
      "model_3d_plain": "mc74lcx244dtr2g-etched.glb",
      "model_3d_step": "mc74lcx244dtr2g-etched.step",
      "model_3d_step_plain": "mc74lcx244dtr2g.step",
      "lbr": "mc74lcx244dtr2g.lbr"
    },
    "distributor_links": {
      "lcsc": "C233545",
      "digikey": "MC74LCX244DTR2GOSTR-ND",
      "mouser": "863-MC74LCX244DTR2G"
    },
    "distributor_check": {
      "checked_at": "2026-10-20T18:34:00Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "MC74LCX244DTR2GOSTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "863-MC74LCX244DTR2G",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1OE",
        "type": "input",
        "description": "Output Enable for outputs 1O0 to 1O3; when HIGH it disables the outputs into a high-impedance (Z) state, and inputs must not be left floating."
      },
      {
        "number": "2",
        "name": "1D0",
        "type": "input",
        "description": "Data input for channel 0 of the first group; TTL-compatible input with 5 V tolerance up to VI = 5.5 V, and must not be left floating."
      },
      {
        "number": "3",
        "name": "2O0",
        "type": "tri_state",
        "description": "3-State output for channel 0 of the second group, with 24 mA balanced sink and source capability."
      },
      {
        "number": "4",
        "name": "1D1",
        "type": "input",
        "description": "Data input for channel 1 of the first group; TTL-compatible input with 5 V tolerance up to VI = 5.5 V, and must not be left floating."
      },
      {
        "number": "5",
        "name": "2O1",
        "type": "tri_state",
        "description": "3-State output for channel 1 of the second group, with 24 mA balanced sink and source capability."
      },
      {
        "number": "6",
        "name": "1D2",
        "type": "input",
        "description": "Data input for channel 2 of the first group; TTL-compatible input with 5 V tolerance up to VI = 5.5 V, and must not be left floating."
      },
      {
        "number": "7",
        "name": "2O2",
        "type": "tri_state",
        "description": "3-State output for channel 2 of the second group, with 24 mA balanced sink and source capability."
      },
      {
        "number": "8",
        "name": "1D3",
        "type": "input",
        "description": "Data input for channel 3 of the first group; TTL-compatible input with 5 V tolerance up to VI = 5.5 V, and must not be left floating."
      },
      {
        "number": "9",
        "name": "2O3",
        "type": "tri_state",
        "description": "3-State output for channel 3 of the second group, with 24 mA balanced sink and source capability."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference; DC ground current is limited to ±100 mA per ground pin."
      },
      {
        "number": "11",
        "name": "2D3",
        "type": "input",
        "description": "Data input for channel 3 of the second group; TTL-compatible input with 5 V tolerance up to VI = 5.5 V, and must not be left floating."
      },
      {
        "number": "12",
        "name": "1O3",
        "type": "tri_state",
        "description": "3-State output for channel 3 of the first group, with 24 mA balanced sink and source capability."
      },
      {
        "number": "13",
        "name": "2D2",
        "type": "input",
        "description": "Data input for channel 2 of the second group; TTL-compatible input with 5 V tolerance up to VI = 5.5 V, and must not be left floating."
      },
      {
        "number": "14",
        "name": "1O2",
        "type": "tri_state",
        "description": "3-State output for channel 2 of the first group, with 24 mA balanced sink and source capability."
      },
      {
        "number": "15",
        "name": "2D1",
        "type": "input",
        "description": "Data input for channel 1 of the second group; TTL-compatible input with 5 V tolerance up to VI = 5.5 V, and must not be left floating."
      },
      {
        "number": "16",
        "name": "1O1",
        "type": "tri_state",
        "description": "3-State output for channel 1 of the first group, with 24 mA balanced sink and source capability."
      },
      {
        "number": "17",
        "name": "2D0",
        "type": "input",
        "description": "Data input for channel 0 of the second group; TTL-compatible input with 5 V tolerance up to VI = 5.5 V, and must not be left floating."
      },
      {
        "number": "18",
        "name": "1O0",
        "type": "tri_state",
        "description": "3-State output for channel 0 of the first group, with 24 mA balanced sink and source capability."
      },
      {
        "number": "19",
        "name": "2OE",
        "type": "input",
        "description": "Output Enable for outputs 2O0 to 2O3; when HIGH it disables the outputs into a high-impedance (Z) state, and inputs must not be left floating."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply, operating from 2.0 V to 5.5 V per the recommended operating conditions."
      },
      {
        "number": "21",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The TSSOP-20 pin map is taken from the Figure 2 logic diagram and the pin-name listing on page 2, wh; The datasheet pinout (Figure 1, top view) is shared by all package variants, so the 20-pin mapping w; The datasheet says the OE input is active when HIGH (disables outputs). The extracted truth table is",
          "exposed pad 21 added from the footprint"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0788,
        "at": "2026-10-20T18:32:12"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588883740277399552",
        "pages": 11,
        "sha256": "d7e3a4c549cea3f9",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 21,
        "described": 21,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "mc74lcx244dtr2g.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          6.5,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "7a0251e13b07dd6c1b086d69741c02849106cddb90d1e188d1f17dfcba69e646",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mc74lcx244dtr2g-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          6.5,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d6150f2a190c7cb52781ae283792c8ed5d377df774c13b60d0a8e608c5773cde",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}