MC74HC244ADTR2G

{
  "slug": "mc74hc244adtr2g",
  "version": "0.1.0",
  "type": "component",
  "description": "onsemi Buffers, Drivers, Receivers, Transceivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
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    "logic",
    "mc74hc244adtr2g",
    "factory-2.0.0",
    "extractor-text"
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    "mc74hc244adtr2g.lbr",
    "docs/hero.png",
    "docs/mc74hc244adtr2g-datasheet.pdf",
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    "viewers/footprint.html",
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    "mc74hc244adtr2g-hero.overlay.json",
    "mc74hc244adtr2g-etched.glb"
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  "component": {
    "mpn": "MC74HC244ADTR2G",
    "manufacturer": "onsemi",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Buffers, Drivers, Receivers, Transceivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588883740114767872",
    "parts": {
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      "lbr": "mc74hc244adtr2g.lbr"
    },
    "distributor_links": {
      "lcsc": "C233462"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T23:50:13Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
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    },
    "pins": [
      {
        "number": "1",
        "name": "Enable A",
        "type": "input",
        "description": "Active-low output enable; when low, the YA1-YA4 outputs act as noninverting buffers, and when high they assume the high-impedance state."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "input",
        "description": "Data input whose noninverted value appears on YA1 when the outputs are enabled; unused inputs must be tied to GND or VCC."
      },
      {
        "number": "3",
        "name": "YB4",
        "type": "tri_state",
        "description": "Noninverting three-state device output, high impedance when the Enable B pin is high."
      },
      {
        "number": "4",
        "name": "A2",
        "type": "input",
        "description": "Data input whose noninverted value appears on YA2 when the outputs are enabled; unused inputs must be tied to GND or VCC."
      },
      {
        "number": "5",
        "name": "YB3",
        "type": "tri_state",
        "description": "Noninverting three-state device output, high impedance when the Enable B pin is high."
      },
      {
        "number": "6",
        "name": "A3",
        "type": "input",
        "description": "Data input whose noninverted value appears on YA3 when the outputs are enabled; unused inputs must be tied to GND or VCC."
      },
      {
        "number": "7",
        "name": "YB2",
        "type": "tri_state",
        "description": "Noninverting three-state device output, high impedance when the Enable B pin is high."
      },
      {
        "number": "8",
        "name": "A4",
        "type": "input",
        "description": "Data input whose noninverted value appears on YA4 when the outputs are enabled; unused inputs must be tied to GND or VCC."
      },
      {
        "number": "9",
        "name": "YB1",
        "type": "tri_state",
        "description": "Noninverting three-state device output, high impedance when the Enable B pin is high."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device (PIN 10 = GND per the logic diagram); all voltages are referenced to this pin."
      },
      {
        "number": "11",
        "name": "B1",
        "type": "input",
        "description": "Data input whose noninverted value appears on YB1 when the outputs are enabled; unused inputs must be tied to GND or VCC."
      },
      {
        "number": "12",
        "name": "YA4",
        "type": "tri_state",
        "description": "Noninverting three-state device output, high impedance when the Enable A pin is high."
      },
      {
        "number": "13",
        "name": "B2",
        "type": "input",
        "description": "Data input whose noninverted value appears on YB2 when the outputs are enabled; unused inputs must be tied to GND or VCC."
      },
      {
        "number": "14",
        "name": "YA3",
        "type": "tri_state",
        "description": "Noninverting three-state device output, high impedance when the Enable A pin is high."
      },
      {
        "number": "15",
        "name": "B3",
        "type": "input",
        "description": "Data input whose noninverted value appears on YB3 when the outputs are enabled; unused inputs must be tied to GND or VCC."
      },
      {
        "number": "16",
        "name": "YA2",
        "type": "tri_state",
        "description": "Noninverting three-state device output, high impedance when the Enable A pin is high."
      },
      {
        "number": "17",
        "name": "B4",
        "type": "input",
        "description": "Data input whose noninverted value appears on YB4 when the outputs are enabled; unused inputs must be tied to GND or VCC."
      },
      {
        "number": "18",
        "name": "YA1",
        "type": "tri_state",
        "description": "Noninverting three-state device output, high impedance when the Enable A pin is high."
      },
      {
        "number": "19",
        "name": "Enable B",
        "type": "input",
        "description": "Active-low output enable; when low, the YB1-YB4 outputs act as noninverting buffers, and when high they assume the high-impedance state."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply; the recommended DC supply range is 2.0 V to 6.0 V referenced to GND, with absolute maximum of 7.0 V."
      }
    ],
    "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 PIN ASSIGNMENT block on page 1 is garbled in the text extraction (pin numbers and labels are not; The datasheet does not state explicitly which enable controls which output bank in a sentence. Mappi; The pin descriptions for pins 3, 5, 7, 9, 12, 14, 16, 18 use the tri_state class because the device "
        ],
        "pages_sent": 7,
        "cost_usd": 0.0631,
        "at": "2026-10-18T23:48:12"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588883740114767872",
        "pages": 7,
        "sha256": "79898eb99ce51700",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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        "footprint_binding": "identity",
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}