CD74AC244M

{
  "slug": "cd74ac244m",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Buffer/Driver/Transceiver, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic ics",
    "cd74ac244m",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
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    "README.md",
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    "cd74ac244m.kicad_mod",
    "cd74ac244m.glb",
    "cd74ac244m.step",
    "cd74ac244m.lbr",
    "docs/hero.png",
    "docs/cd74ac244m-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cd74ac244m-hero.glb",
    "cd74ac244m-hero.overlay.json",
    "cd74ac244m-etched.glb"
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  "component": {
    "mpn": "CD74AC244M",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-20-300mil",
    "pin_count": 20,
    "category": "Logic ICs",
    "subcategory": "Buffer/Driver/Transceiver",
    "datasheet": "https://www.ti.com/lit/ds/symlink/cd74ac244m.pdf",
    "parts": {
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      "footprint": "cd74ac244m.kicad_mod",
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      "model_3d_plain": "cd74ac244m-etched.glb",
      "model_3d_step": "cd74ac244m-etched.step",
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      "lbr": "cd74ac244m.lbr"
    },
    "distributor_links": {
      "lcsc": "C2878455"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T21:14:11Z",
      "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": "1OE",
        "type": "input",
        "description": "Active-LOW output enable for the 1Y outputs; HIGH puts them in high impedance."
      },
      {
        "number": "2",
        "name": "1A0",
        "type": "input",
        "description": "Data input A0 of buffer group 1, non-inverting to 1Y0."
      },
      {
        "number": "3",
        "name": "2Y3",
        "type": "tri_state",
        "description": "3-state output of buffer group 2 for 2A3, shown as 2Y0 on the page 2 diagram but 2Y3 on the page 1 functional diagram."
      },
      {
        "number": "4",
        "name": "1A1",
        "type": "input",
        "description": "Data input A1 of buffer group 1, non-inverting to 1Y1."
      },
      {
        "number": "5",
        "name": "2Y2",
        "type": "tri_state",
        "description": "3-state output of buffer group 2 for 2A2, drives ±24 mA."
      },
      {
        "number": "6",
        "name": "1A2",
        "type": "input",
        "description": "Data input A2 of buffer group 1, non-inverting to 1Y2."
      },
      {
        "number": "7",
        "name": "2Y1",
        "type": "tri_state",
        "description": "3-state output of buffer group 2 for 2A1, drives ±24 mA."
      },
      {
        "number": "8",
        "name": "1A3",
        "type": "input",
        "description": "Data input A3 of buffer group 1, non-inverting to 1Y3."
      },
      {
        "number": "9",
        "name": "2Y0",
        "type": "tri_state",
        "description": "3-state output of buffer group 2 for 2A0, drives ±24 mA."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground, 0 V reference for all voltages."
      },
      {
        "number": "11",
        "name": "2A0",
        "type": "input",
        "description": "Data input A0 of buffer group 2, non-inverting to 2Y0."
      },
      {
        "number": "12",
        "name": "1Y3",
        "type": "tri_state",
        "description": "3-state output of buffer group 1 for 1A3, drives ±24 mA."
      },
      {
        "number": "13",
        "name": "2A1",
        "type": "input",
        "description": "Data input A1 of buffer group 2, non-inverting to 2Y1."
      },
      {
        "number": "14",
        "name": "1Y2",
        "type": "tri_state",
        "description": "3-state output of buffer group 1 for 1A2, drives ±24 mA."
      },
      {
        "number": "15",
        "name": "2A2",
        "type": "input",
        "description": "Data input A2 of buffer group 2, non-inverting to 2Y2."
      },
      {
        "number": "16",
        "name": "1Y1",
        "type": "tri_state",
        "description": "3-state output of buffer group 1 for 1A1, drives ±24 mA."
      },
      {
        "number": "17",
        "name": "2A3",
        "type": "input",
        "description": "Data input A3 of buffer group 2, non-inverting to 2Y3."
      },
      {
        "number": "18",
        "name": "1Y0",
        "type": "tri_state",
        "description": "3-state output of buffer group 1 for 1A0, drives ±24 mA."
      },
      {
        "number": "19",
        "name": "2OE",
        "type": "input",
        "description": "Active-LOW output enable for the 2Y outputs; HIGH puts them in high impedance."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, 1.5 V to 5.5 V for AC types (absolute max -0.5 to 6 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 page 2 CD54/74AC244 terminal diagram labels pin 3 as 2Y0, duplicating pin 9. The page 1 function; The packaging table lists CD74AC244M as SOIC package DW (20 pins, 7.5 mm body, 300 mil class). The p",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 18,
        "cost_usd": 0.3568,
        "at": "2026-10-23T21:13:16"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/cd74ac244m.pdf",
        "pages": 18,
        "sha256": "571ed9bfbbad5851",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "seat": "z = 0",
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
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        "checked": "2026-10-23",
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}