74LVC244APW

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  "type": "component",
  "slug": "74lvc244apw",
  "title": "74LVC244APW",
  "brief": "Nexperia Buffer/Driver/Transceiver, TSSOP-20. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
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  "component": {
    "mpn": "74LVC244APW",
    "manufacturer": "Nexperia",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Buffer/Driver/Transceiver",
    "datasheet": "https://assets.nexperia.com/documents/data-sheet/74LVC244APW.pdf",
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      "footprint": "74lvc244apw.kicad_mod",
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      "lbr": "74lvc244apw.lbr"
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    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "1OE",
        "type": "input",
        "description": "Output enable input for bank 1 (1Y0-1Y3), active LOW. HIGH forces bank 1 outputs into high-impedance OFF state."
      },
      {
        "number": "2",
        "name": "1A0",
        "type": "input",
        "description": "Bank 1 data input 0. Schmitt-trigger CMOS input, 5.5 V tolerant; drives buffer output 1Y0 when 1OE is LOW."
      },
      {
        "number": "3",
        "name": "2Y0",
        "type": "tri_state",
        "description": "Bank 2 data output 0. 3-state CMOS output; drives 2A0 input state when 2OE is LOW, high-impedance when 2OE is HIGH."
      },
      {
        "number": "4",
        "name": "1A1",
        "type": "input",
        "description": "Bank 1 data input 1. Schmitt-trigger CMOS input, 5.5 V tolerant; drives buffer output 1Y1 when 1OE is LOW."
      },
      {
        "number": "5",
        "name": "2Y1",
        "type": "tri_state",
        "description": "Bank 2 data output 1. 3-state CMOS output driven by 2A1 when 2OE is LOW."
      },
      {
        "number": "6",
        "name": "1A2",
        "type": "input",
        "description": "Bank 1 data input 2. Schmitt-trigger CMOS input, 5.5 V tolerant; drives buffer output 1Y2 when 1OE is LOW."
      },
      {
        "number": "7",
        "name": "2Y2",
        "type": "tri_state",
        "description": "Bank 2 data output 2. 3-state CMOS output driven by 2A2 when 2OE is LOW."
      },
      {
        "number": "8",
        "name": "1A3",
        "type": "input",
        "description": "Bank 1 data input 3. Schmitt-trigger CMOS input, 5.5 V tolerant; drives buffer output 1Y3 when 1OE is LOW."
      },
      {
        "number": "9",
        "name": "2Y3",
        "type": "tri_state",
        "description": "Bank 2 data output 3. 3-state CMOS output driven by 2A3 when 2OE is LOW."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (0 V)."
      },
      {
        "number": "11",
        "name": "2A3",
        "type": "input",
        "description": "Bank 2 data input 3. Schmitt-trigger CMOS input, 5.5 V tolerant; drives buffer output 2Y3 when 2OE is LOW."
      },
      {
        "number": "12",
        "name": "1Y3",
        "type": "tri_state",
        "description": "Bank 1 data output 3. 3-state CMOS output driven by 1A3 when 1OE is LOW."
      },
      {
        "number": "13",
        "name": "2A2",
        "type": "input",
        "description": "Bank 2 data input 2. Schmitt-trigger CMOS input, 5.5 V tolerant; drives buffer output 2Y2 when 2OE is LOW."
      },
      {
        "number": "14",
        "name": "1Y2",
        "type": "tri_state",
        "description": "Bank 1 data output 2. 3-state CMOS output driven by 1A2 when 1OE is LOW."
      },
      {
        "number": "15",
        "name": "2A1",
        "type": "input",
        "description": "Bank 2 data input 1. Schmitt-trigger CMOS input, 5.5 V tolerant; drives buffer output 2Y1 when 2OE is LOW."
      },
      {
        "number": "16",
        "name": "1Y1",
        "type": "tri_state",
        "description": "Bank 1 data output 1. 3-state CMOS output driven by 1A1 when 1OE is LOW."
      },
      {
        "number": "17",
        "name": "2A0",
        "type": "input",
        "description": "Bank 2 data input 0. Schmitt-trigger CMOS input, 5.5 V tolerant; drives buffer output 2Y0 when 2OE is LOW."
      },
      {
        "number": "18",
        "name": "1Y0",
        "type": "tri_state",
        "description": "Bank 1 data output 0. 3-state CMOS output driven by 1A0 when 1OE is LOW."
      },
      {
        "number": "19",
        "name": "2OE",
        "type": "input",
        "description": "Output enable input for bank 2 (2Y0-2Y3), active LOW. HIGH forces bank 2 outputs into high-impedance OFF state."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage. Recommended operating range 1.65 V to 3.6 V (functional down to 1.2 V); absolute max 6.5 V."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://assets.nexperia.com/documents/data-sheet/74LVC244APW.pdf",
        "pages": 16,
        "sha256": "4195257c91082e34",
        "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": "74LVC244",
      "logic_family": "74LVC",
      "function_code": "244",
      "function_class": "Buffer",
      "function_name": "Octal Buffer/Driver, Non-Inverting, 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
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74lvc244apw-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
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        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Nexperia",
      "Package": "TSSOP-20",
      "Category": "Logic",
      "Pins": "20"
    }
  },
  "sections": [
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  "discovery_triggers": [
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  "discovery_pitch": "74LVC244APW (Nexperia) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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    "path": "docs/hero.png"
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  "files": [
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    "74lvc244apw.step",
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  "visibility": {
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  "updated_at": "2026-09-24T15:14:46.393Z"
}