74LVC245AT20-13

{
  "schema_version": 1,
  "type": "component",
  "slug": "74lvc245at20-13",
  "title": "74LVC245AT20-13",
  "brief": "Diodes Incorporated Buffer/Driver/Transceiver, TSSOP-20. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "logic",
    "74lvc245at20-13"
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  "component": {
    "mpn": "74LVC245AT20-13",
    "manufacturer": "Diodes Incorporated",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Buffer/Driver/Transceiver",
    "datasheet": "https://www.diodes.com/assets/Datasheets/74LVC245AT20-13.pdf",
    "parts": {
      "symbol": "74lvc245at20-13.kicad_sym",
      "footprint": "74lvc245at20-13.kicad_mod",
      "model_3d": "74lvc245at20-13-etched.glb",
      "model_3d_plain": "74lvc245at20-13.glb",
      "model_3d_step": "74lvc245at20-13-etched.step",
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      "lbr": "74lvc245at20-13.lbr"
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    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "DIR",
        "type": "input",
        "description": "Direction control input. When LOW, data flows from B bus to A bus; when HIGH, data flows from A bus to B bus. Schmitt-trigger input, tolerant to 5.5V."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "bidirectional",
        "description": "A-bus data I/O bit 1. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V."
      },
      {
        "number": "3",
        "name": "A2",
        "type": "bidirectional",
        "description": "A-bus data I/O bit 2. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V."
      },
      {
        "number": "4",
        "name": "A3",
        "type": "bidirectional",
        "description": "A-bus data I/O bit 3. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V."
      },
      {
        "number": "5",
        "name": "A4",
        "type": "bidirectional",
        "description": "A-bus data I/O bit 4. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V."
      },
      {
        "number": "6",
        "name": "A5",
        "type": "bidirectional",
        "description": "A-bus data I/O bit 5. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V."
      },
      {
        "number": "7",
        "name": "A6",
        "type": "bidirectional",
        "description": "A-bus data I/O bit 6. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V."
      },
      {
        "number": "8",
        "name": "A7",
        "type": "bidirectional",
        "description": "A-bus data I/O bit 7. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V."
      },
      {
        "number": "9",
        "name": "A8",
        "type": "bidirectional",
        "description": "A-bus data I/O bit 8. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (0 V). Continuous sink current through GND rated at -100 mA maximum."
      },
      {
        "number": "11",
        "name": "B8",
        "type": "bidirectional",
        "description": "B-bus data I/O bit 8. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V."
      },
      {
        "number": "12",
        "name": "B7",
        "type": "bidirectional",
        "description": "B-bus data I/O bit 7. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V."
      },
      {
        "number": "13",
        "name": "B6",
        "type": "bidirectional",
        "description": "B-bus data I/O bit 6. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V."
      },
      {
        "number": "14",
        "name": "B5",
        "type": "bidirectional",
        "description": "B-bus data I/O bit 5. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V."
      },
      {
        "number": "15",
        "name": "B4",
        "type": "bidirectional",
        "description": "B-bus data I/O bit 4. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V."
      },
      {
        "number": "16",
        "name": "B3",
        "type": "bidirectional",
        "description": "B-bus data I/O bit 3. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V."
      },
      {
        "number": "17",
        "name": "B2",
        "type": "bidirectional",
        "description": "B-bus data I/O bit 2. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V."
      },
      {
        "number": "18",
        "name": "B1",
        "type": "bidirectional",
        "description": "B-bus data I/O bit 1. Direction determined by DIR pin; high-impedance when OE is HIGH. 5.5V tolerant, sinks/sources 24 mA at VCC=3.0V."
      },
      {
        "number": "19",
        "name": "~OE",
        "type": "input",
        "description": "Active-low output enable. When LOW, transceivers are enabled and pass data in the direction set by DIR. When HIGH, both A and B buses are placed in high-impedance (bus isolation)."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply voltage input, 1.65 V to 3.6 V operating range (1.5 V minimum for data retention only). Decouple close to the pin."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.diodes.com/assets/Datasheets/74LVC245AT20-13.pdf",
        "pages": 10,
        "sha256": "82a89c79af60b742",
        "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"
    },
    "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
    },
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          6.5,
          1.2
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
        "checked": "2026-10-07",
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      },
      {
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        "role": "eda",
        "up": "Z",
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        "origin": "footprint origin = pad-pattern centre",
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
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        "sha256": "595a0a8c81a7da87a80a884626faf9d7f2da6c4788d77f72bb131c98a1f57be0",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Diodes Incorporated",
      "Package": "TSSOP-20",
      "Category": "Logic",
      "Pins": "20"
    }
  },
  "variants": [
    {
      "mpn": "74LVC245AT20-13",
      "kind": "packaging"
    },
    {
      "mpn": "74LVC245AT20-13Q20-13",
      "kind": "packaging"
    }
  ],
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  "discovery_triggers": [
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  "discovery_pitch": "74LVC245AT20-13 (Diodes Incorporated) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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  "updated_at": "2026-09-24T15:15:02.278Z"
}