SN74AHC244QDWRQ1

{
  "slug": "sn74ahc244qdwrq1",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Buffers, Drivers, Receivers, Transceivers, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "sn74ahc244qdwrq1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn74ahc244qdwrq1.kicad_sym",
    "sn74ahc244qdwrq1.kicad_mod",
    "sn74ahc244qdwrq1.glb",
    "sn74ahc244qdwrq1.step",
    "sn74ahc244qdwrq1.lbr",
    "docs/hero.png",
    "docs/sn74ahc244qdwrq1-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sn74ahc244qdwrq1-hero.glb",
    "sn74ahc244qdwrq1-hero.overlay.json"
  ],
  "component": {
    "mpn": "SN74AHC244QDWRQ1",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-20-300mil",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Buffers, Drivers, Receivers, Transceivers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/sn74ahc244-q1",
    "parts": {
      "symbol": "sn74ahc244qdwrq1.kicad_sym",
      "footprint": "sn74ahc244qdwrq1.kicad_mod",
      "model_3d": "sn74ahc244qdwrq1-hero.glb",
      "model_3d_plain": "sn74ahc244qdwrq1.glb",
      "model_3d_step": "sn74ahc244qdwrq1-etched.step",
      "model_3d_step_plain": "sn74ahc244qdwrq1.step",
      "lbr": "sn74ahc244qdwrq1.lbr"
    },
    "distributor_links": {
      "lcsc": "C2676048",
      "digikey": "296-17495-2-ND",
      "mouser": "595-SN74AHC244QDWRQ1"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T19:32:40Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-17495-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-SN74AHC244QDWRQ1",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1OE",
        "type": "input",
        "description": "Active-low output enable for buffer 1 (1Y1 to 1Y4): when OE is low the 1A inputs pass to the 1Y outputs, and when OE is high the 1Y outputs are high-impedance (Z)."
      },
      {
        "number": "2",
        "name": "1A1",
        "type": "input",
        "description": "Data input 1A1 of buffer 1; the datasheet specifies an input voltage range of 0 V to 5.5 V and says unused inputs must be held at VCC or GND."
      },
      {
        "number": "3",
        "name": "2Y4",
        "type": "output",
        "description": "Data output 2Y4 of buffer 2, which goes to high-impedance (Z) when 2OE is high."
      },
      {
        "number": "4",
        "name": "1A2",
        "type": "input",
        "description": "Data input 1A2 of buffer 1; the datasheet specifies an input voltage range of 0 V to 5.5 V and says unused inputs must be held at VCC or GND."
      },
      {
        "number": "5",
        "name": "2Y3",
        "type": "output",
        "description": "Data output 2Y3 of buffer 2, which goes to high-impedance (Z) when 2OE is high."
      },
      {
        "number": "6",
        "name": "1A3",
        "type": "input",
        "description": "Data input 1A3 of buffer 1; the datasheet specifies an input voltage range of 0 V to 5.5 V and says unused inputs must be held at VCC or GND."
      },
      {
        "number": "7",
        "name": "2Y2",
        "type": "output",
        "description": "Data output 2Y2 of buffer 2, which goes to high-impedance (Z) when 2OE is high."
      },
      {
        "number": "8",
        "name": "1A4",
        "type": "input",
        "description": "Data input 1A4 of buffer 1; the datasheet specifies an input voltage range of 0 V to 5.5 V and says unused inputs must be held at VCC or GND."
      },
      {
        "number": "9",
        "name": "2Y1",
        "type": "output",
        "description": "Data output 2Y1 of buffer 2, which goes to high-impedance (Z) when 2OE is high."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin for the device."
      },
      {
        "number": "11",
        "name": "2A1",
        "type": "input",
        "description": "Data input 2A1 of buffer 2; the datasheet specifies an input voltage range of 0 V to 5.5 V and says unused inputs must be held at VCC or GND."
      },
      {
        "number": "12",
        "name": "1Y4",
        "type": "output",
        "description": "Data output 1Y4 of buffer 1, which goes to high-impedance (Z) when 1OE is high."
      },
      {
        "number": "13",
        "name": "2A2",
        "type": "input",
        "description": "Data input 2A2 of buffer 2; the datasheet specifies an input voltage range of 0 V to 5.5 V and says unused inputs must be held at VCC or GND."
      },
      {
        "number": "14",
        "name": "1Y3",
        "type": "output",
        "description": "Data output 1Y3 of buffer 1, which goes to high-impedance (Z) when 1OE is high."
      },
      {
        "number": "15",
        "name": "2A3",
        "type": "input",
        "description": "Data input 2A3 of buffer 2; the datasheet specifies an input voltage range of 0 V to 5.5 V and says unused inputs must be held at VCC or GND."
      },
      {
        "number": "16",
        "name": "1Y2",
        "type": "output",
        "description": "Data output 1Y2 of buffer 1, which goes to high-impedance (Z) when 1OE is high."
      },
      {
        "number": "17",
        "name": "2A4",
        "type": "input",
        "description": "Data input 2A4 of buffer 2; the datasheet specifies an input voltage range of 0 V to 5.5 V and says unused inputs must be held at VCC or GND."
      },
      {
        "number": "18",
        "name": "1Y1",
        "type": "output",
        "description": "Data output 1Y1 of buffer 1, which goes to high-impedance (Z) when 1OE is high."
      },
      {
        "number": "19",
        "name": "2OE",
        "type": "input",
        "description": "Active-low output enable for buffer 2 (2Y1 to 2Y4): when OE is low the 2A inputs pass to the 2Y outputs, and when OE is high the 2Y outputs are high-impedance (Z)."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply pin; the recommended supply range is 2 V to 5.5 V, and each VCC pin should be bypassed close to the device (0.1 µF recommended for a single supply)."
      }
    ],
    "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 table on page 3 is shared by the DW (SOIC-20) and PW (TSSOP-20) packages. The DW pinout is t; The datasheet pin table gives only short names and I/O directions. Per-pin descriptions combine that; The output schema has no field for headline specs, so no spec values were recorded. The VCC range (2"
        ],
        "pages_sent": 27,
        "cost_usd": 0.092,
        "at": "2026-10-08T19:31:46"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/sn74ahc244-q1",
        "pages": 27,
        "sha256": "b8d4fd97ed6baa6f",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "sn74ahc244qdwrq1.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          10.3,
          12.8,
          2.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "59a10b341e6972b31d81802a048060326da627d8b92dcf4263064f4f62ec808e",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn74ahc244qdwrq1-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          10.3,
          12.8,
          2.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "2c5957312e93620def0bac1dde82274a6fe36f2704d0401b93c9803913e9f98f",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}