74LVC245APW

{
  "slug": "74lvc245apw",
  "version": "0.2.1",
  "type": "component",
  "description": "Nexperia Buffer/Driver/Transceiver, TSSOP-20. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "74lvc245apw"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "74lvc245apw.kicad_sym",
    "74lvc245apw.kicad_mod",
    "74lvc245apw.glb",
    "74lvc245apw.step",
    "74lvc245apw-etched.step",
    "74lvc245apw.lbr",
    "docs/hero.png",
    "docs/74lvc245apw-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "pads.json",
    "74lvc245apw-hero.glb",
    "74lvc245apw-hero.overlay.json"
  ],
  "component": {
    "mpn": "74LVC245APW",
    "manufacturer": "Nexperia",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Buffer/Driver/Transceiver",
    "datasheet": "https://assets.nexperia.com/documents/data-sheet/74LVC245APW.pdf",
    "parts": {
      "symbol": "74lvc245apw.kicad_sym",
      "footprint": "74lvc245apw.kicad_mod",
      "model_3d": "74lvc245apw-hero.glb",
      "model_3d_plain": "74lvc245apw.glb",
      "model_3d_step": "74lvc245apw-etched.step",
      "model_3d_step_plain": "74lvc245apw.step",
      "lbr": "74lvc245apw.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "DIR",
        "type": "input",
        "description": "Direction control input. LOW routes Bn to An (B->A); HIGH routes An to Bn (A->B). CMOS/TTL-compatible Schmitt-trigger input."
      },
      {
        "number": "2",
        "name": "A0",
        "type": "bidirectional",
        "description": "A-side bus data input/output bit 0. Direction set by DIR; enters high-impedance when OE is HIGH."
      },
      {
        "number": "3",
        "name": "A1",
        "type": "bidirectional",
        "description": "A-side bus data input/output bit 1. Direction set by DIR; enters high-impedance when OE is HIGH."
      },
      {
        "number": "4",
        "name": "A2",
        "type": "bidirectional",
        "description": "A-side bus data input/output bit 2. Direction set by DIR; enters high-impedance when OE is HIGH."
      },
      {
        "number": "5",
        "name": "A3",
        "type": "bidirectional",
        "description": "A-side bus data input/output bit 3. Direction set by DIR; enters high-impedance when OE is HIGH."
      },
      {
        "number": "6",
        "name": "A4",
        "type": "bidirectional",
        "description": "A-side bus data input/output bit 4. Direction set by DIR; enters high-impedance when OE is HIGH."
      },
      {
        "number": "7",
        "name": "A5",
        "type": "bidirectional",
        "description": "A-side bus data input/output bit 5. Direction set by DIR; enters high-impedance when OE is HIGH."
      },
      {
        "number": "8",
        "name": "A6",
        "type": "bidirectional",
        "description": "A-side bus data input/output bit 6. Direction set by DIR; enters high-impedance when OE is HIGH."
      },
      {
        "number": "9",
        "name": "A7",
        "type": "bidirectional",
        "description": "A-side bus data input/output bit 7. Direction set by DIR; enters high-impedance when OE is HIGH."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (0 V). Connect to system ground."
      },
      {
        "number": "11",
        "name": "B7",
        "type": "bidirectional",
        "description": "B-side bus data input/output bit 7. Direction set by DIR; enters high-impedance when OE is HIGH."
      },
      {
        "number": "12",
        "name": "B6",
        "type": "bidirectional",
        "description": "B-side bus data input/output bit 6. Direction set by DIR; enters high-impedance when OE is HIGH."
      },
      {
        "number": "13",
        "name": "B5",
        "type": "bidirectional",
        "description": "B-side bus data input/output bit 5. Direction set by DIR; enters high-impedance when OE is HIGH."
      },
      {
        "number": "14",
        "name": "B4",
        "type": "bidirectional",
        "description": "B-side bus data input/output bit 4. Direction set by DIR; enters high-impedance when OE is HIGH."
      },
      {
        "number": "15",
        "name": "B3",
        "type": "bidirectional",
        "description": "B-side bus data input/output bit 3. Direction set by DIR; enters high-impedance when OE is HIGH."
      },
      {
        "number": "16",
        "name": "B2",
        "type": "bidirectional",
        "description": "B-side bus data input/output bit 2. Direction set by DIR; enters high-impedance when OE is HIGH."
      },
      {
        "number": "17",
        "name": "B1",
        "type": "bidirectional",
        "description": "B-side bus data input/output bit 1. Direction set by DIR; enters high-impedance when OE is HIGH."
      },
      {
        "number": "18",
        "name": "B0",
        "type": "bidirectional",
        "description": "B-side bus data input/output bit 0. Direction set by DIR; enters high-impedance when OE is HIGH."
      },
      {
        "number": "19",
        "name": "OE",
        "type": "input",
        "description": "Output enable, active LOW. LOW enables the transceiver drivers; HIGH forces both An and Bn buses to the high-impedance OFF-state."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage input. Recommended operating range 1.65 V to 3.6 V (functional from 1.2 V); absolute maximum 6.5 V. Decouple locally with 100 nF to GND."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://assets.nexperia.com/documents/data-sheet/74LVC245APW.pdf",
        "pages": 16,
        "sha256": "e87a15c19e7cc6c5",
        "source_tier": "mfr"
      },
      "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.8625,
        -2.925
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "TSSOP-20_4.4x6.5mm_P0.65mm@sha256:b7ca3a31dd45c122",
      "mark": "drawn"
    },
    "logic": {
      "family_id": "74LVC245",
      "logic_family": "74LVC",
      "function_code": "245",
      "function_class": "Transceiver",
      "function_name": "Octal Bus Transceiver, 3-State",
      "manufacturer": null,
      "is_specialty": false
    },
    "models_3d": [
      {
        "file": "74lvc245apw.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          6.5,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74lvc245apw-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          6.5,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "20f4cfb37b642898042ae845334accfc23271fa0757efb3b14089fc1a9f47ddd",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "title": "74LVC245APW",
  "brief": "Nexperia Buffer/Driver/Transceiver, TSSOP-20. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "metadata": {
    "specs": {
      "Manufacturer": "Nexperia",
      "Package": "TSSOP-20",
      "Category": "Logic",
      "Pins": "20"
    }
  },
  "discovery_triggers": [
    "74lvc245apw"
  ],
  "discovery_pitch": "74LVC245APW (Nexperia) component page with datasheet-verified CAD.",
  "visibility": "public"
}