SN74AHC245QDWRG4Q1

{
  "slug": "sn74ahc245qdwrg4q1",
  "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",
    "sn74ahc245qdwrg4q1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn74ahc245qdwrg4q1.kicad_sym",
    "sn74ahc245qdwrg4q1.kicad_mod",
    "sn74ahc245qdwrg4q1.glb",
    "sn74ahc245qdwrg4q1.step",
    "sn74ahc245qdwrg4q1.lbr",
    "docs/hero.png",
    "docs/sn74ahc245qdwrg4q1-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sn74ahc245qdwrg4q1-hero.glb",
    "sn74ahc245qdwrg4q1-hero.overlay.json"
  ],
  "component": {
    "mpn": "SN74AHC245QDWRG4Q1",
    "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/sn74ahc245q",
    "parts": {
      "symbol": "sn74ahc245qdwrg4q1.kicad_sym",
      "footprint": "sn74ahc245qdwrg4q1.kicad_mod",
      "model_3d": "sn74ahc245qdwrg4q1-hero.glb",
      "model_3d_plain": "sn74ahc245qdwrg4q1.glb",
      "model_3d_step": "sn74ahc245qdwrg4q1-etched.step",
      "model_3d_step_plain": "sn74ahc245qdwrg4q1.step",
      "lbr": "sn74ahc245qdwrg4q1.lbr"
    },
    "distributor_links": {
      "lcsc": "C1879760",
      "digikey": "296-SN74AHC245QDWRG4Q1TR-ND",
      "mouser": "595-74AHC245QDWRG4Q1"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T00:21:23Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-SN74AHC245QDWRG4Q1TR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-74AHC245QDWRG4Q1",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "DIR",
        "type": "input",
        "description": "Direction-control input: logic low transfers data from the B bus to the A bus, and logic high transfers data from the A bus to the B bus."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "bidirectional",
        "description": "A-bus channel 1 3-state input/output; direction is set by DIR and the channel is high-impedance when OE is high."
      },
      {
        "number": "3",
        "name": "A2",
        "type": "bidirectional",
        "description": "A-bus channel 2 3-state input/output; direction is set by DIR and the channel is high-impedance when OE is high."
      },
      {
        "number": "4",
        "name": "A3",
        "type": "bidirectional",
        "description": "A-bus channel 3 3-state input/output; direction is set by DIR and the channel is high-impedance when OE is high."
      },
      {
        "number": "5",
        "name": "A4",
        "type": "bidirectional",
        "description": "A-bus channel 4 3-state input/output; direction is set by DIR and the channel is high-impedance when OE is high."
      },
      {
        "number": "6",
        "name": "A5",
        "type": "bidirectional",
        "description": "A-bus channel 5 3-state input/output; direction is set by DIR and the channel is high-impedance when OE is high."
      },
      {
        "number": "7",
        "name": "A6",
        "type": "bidirectional",
        "description": "A-bus channel 6 3-state input/output; direction is set by DIR and the channel is high-impedance when OE is high."
      },
      {
        "number": "8",
        "name": "A7",
        "type": "bidirectional",
        "description": "A-bus channel 7 3-state input/output; direction is set by DIR and the channel is high-impedance when OE is high."
      },
      {
        "number": "9",
        "name": "A8",
        "type": "bidirectional",
        "description": "A-bus channel 8 3-state input/output; direction is set by DIR and the channel is high-impedance when OE is high."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference."
      },
      {
        "number": "11",
        "name": "B8",
        "type": "bidirectional",
        "description": "B-bus channel 8 3-state input/output; direction is set by DIR and the channel is high-impedance when OE is high."
      },
      {
        "number": "12",
        "name": "B7",
        "type": "bidirectional",
        "description": "B-bus channel 7 3-state input/output; direction is set by DIR and the channel is high-impedance when OE is high."
      },
      {
        "number": "13",
        "name": "B6",
        "type": "bidirectional",
        "description": "B-bus channel 6 3-state input/output; direction is set by DIR and the channel is high-impedance when OE is high."
      },
      {
        "number": "14",
        "name": "B5",
        "type": "bidirectional",
        "description": "B-bus channel 5 3-state input/output; direction is set by DIR and the channel is high-impedance when OE is high."
      },
      {
        "number": "15",
        "name": "B4",
        "type": "bidirectional",
        "description": "B-bus channel 4 3-state input/output; direction is set by DIR and the channel is high-impedance when OE is high."
      },
      {
        "number": "16",
        "name": "B3",
        "type": "bidirectional",
        "description": "B-bus channel 3 3-state input/output; direction is set by DIR and the channel is high-impedance when OE is high."
      },
      {
        "number": "17",
        "name": "B2",
        "type": "bidirectional",
        "description": "B-bus channel 2 3-state input/output; direction is set by DIR and the channel is high-impedance when OE is high."
      },
      {
        "number": "18",
        "name": "B1",
        "type": "bidirectional",
        "description": "B-bus channel 1 3-state input/output; direction is set by DIR and the channel is high-impedance when OE is high."
      },
      {
        "number": "19",
        "name": "OE",
        "type": "input",
        "description": "Output-enable input; when high the device is disabled so the A and B buses are isolated, and it should be tied to VCC through a pullup resistor to hold the high-impedance state during power up or power down."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, operating range 2 V to 5.5 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: Pin numbers were assigned from the DW/PW top-view listing, which the text extraction printed in a sc; The datasheet ordering table lists SN74AHC245QDWR, not the G4Q1 suffix. The G4Q1 part (SOIC DW, 20 p"
        ],
        "pages_sent": 17,
        "cost_usd": 0.0797,
        "at": "2026-10-08T00:21:03"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/sn74ahc245q",
        "pages": 17,
        "sha256": "2984f9f0efcb7078",
        "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": "sn74ahc245qdwrg4q1.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": "sn74ahc245qdwrg4q1-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          10.3,
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          2.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "33f4e9bf78c776f0367446f9f02414e50f9d46315b33456c9531f0ac0fc377b0",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}