SN74LVC244ADBR

{
  "schema_version": 1,
  "type": "component",
  "slug": "sn74lvc244adbr",
  "title": "SN74LVC244ADBR",
  "brief": "Texas Instruments Buffer/Driver/Transceiver, SSOP-20-208mil. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "logic",
    "sn74lvc244adbr"
  ],
  "component": {
    "mpn": "SN74LVC244ADBR",
    "manufacturer": "Texas Instruments",
    "package": "SSOP-20-208mil",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Buffer/Driver/Transceiver",
    "datasheet": "https://www.ti.com/lit/ds/symlink/sn74lvc244adbr.pdf",
    "parts": {
      "symbol": "sn74lvc244adbr.kicad_sym",
      "footprint": "sn74lvc244adbr.kicad_mod",
      "model_3d": "sn74lvc244adbr-etched.glb",
      "model_3d_plain": "sn74lvc244adbr.glb",
      "model_3d_step": "sn74lvc244adbr-etched.step",
      "model_3d_step_plain": "sn74lvc244adbr.step",
      "lbr": "sn74lvc244adbr.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "1OE",
        "type": "input",
        "description": "Active-low output enable for the 1Y1-1Y4 bank. When 1OE is low the 1A1-1A4 inputs are driven onto 1Y1-1Y4; when high the 1Y outputs enter the high-impedance (Hi-Z) state."
      },
      {
        "number": "2",
        "name": "1A1",
        "type": "input",
        "description": "Port 1 channel A1 data input. Accepts CMOS logic levels up to 5.5 V independent of VCC (VCC 1.65-3.6 V)."
      },
      {
        "number": "3",
        "name": "2Y4",
        "type": "tri_state",
        "description": "Port 2 channel Y4 buffered 3-state output. Follows 2A4 when 2OE is low, Hi-Z when 2OE is high. IOH/IOL up to +/-24 mA at VCC=3 V."
      },
      {
        "number": "4",
        "name": "1A2",
        "type": "input",
        "description": "Port 1 channel A2 data input. Accepts CMOS logic levels up to 5.5 V independent of VCC."
      },
      {
        "number": "5",
        "name": "2Y3",
        "type": "tri_state",
        "description": "Port 2 channel Y3 buffered 3-state output. Follows 2A3 when 2OE is low, Hi-Z when 2OE is high."
      },
      {
        "number": "6",
        "name": "1A3",
        "type": "input",
        "description": "Port 1 channel A3 data input. Accepts CMOS logic levels up to 5.5 V."
      },
      {
        "number": "7",
        "name": "2Y2",
        "type": "tri_state",
        "description": "Port 2 channel Y2 buffered 3-state output. Follows 2A2 when 2OE is low, Hi-Z when 2OE is high."
      },
      {
        "number": "8",
        "name": "1A4",
        "type": "input",
        "description": "Port 1 channel A4 data input. Accepts CMOS logic levels up to 5.5 V."
      },
      {
        "number": "9",
        "name": "2Y1",
        "type": "tri_state",
        "description": "Port 2 channel Y1 buffered 3-state output. Follows 2A1 when 2OE is low, Hi-Z when 2OE is high."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (0 V)."
      },
      {
        "number": "11",
        "name": "2A1",
        "type": "input",
        "description": "Port 2 channel A1 data input. Accepts CMOS logic levels up to 5.5 V."
      },
      {
        "number": "12",
        "name": "1Y4",
        "type": "tri_state",
        "description": "Port 1 channel Y4 buffered 3-state output. Follows 1A4 when 1OE is low, Hi-Z when 1OE is high."
      },
      {
        "number": "13",
        "name": "2A2",
        "type": "input",
        "description": "Port 2 channel A2 data input. Accepts CMOS logic levels up to 5.5 V."
      },
      {
        "number": "14",
        "name": "1Y3",
        "type": "tri_state",
        "description": "Port 1 channel Y3 buffered 3-state output. Follows 1A3 when 1OE is low, Hi-Z when 1OE is high."
      },
      {
        "number": "15",
        "name": "2A3",
        "type": "input",
        "description": "Port 2 channel A3 data input. Accepts CMOS logic levels up to 5.5 V."
      },
      {
        "number": "16",
        "name": "1Y2",
        "type": "tri_state",
        "description": "Port 1 channel Y2 buffered 3-state output. Follows 1A2 when 1OE is low, Hi-Z when 1OE is high."
      },
      {
        "number": "17",
        "name": "2A4",
        "type": "input",
        "description": "Port 2 channel A4 data input. Accepts CMOS logic levels up to 5.5 V."
      },
      {
        "number": "18",
        "name": "1Y1",
        "type": "tri_state",
        "description": "Port 1 channel Y1 buffered 3-state output. Follows 1A1 when 1OE is low, Hi-Z when 1OE is high."
      },
      {
        "number": "19",
        "name": "2OE",
        "type": "input",
        "description": "Active-low output enable for the 2Y1-2Y4 bank. When 2OE is low the 2A1-2A4 inputs are driven onto 2Y1-2Y4; when high the 2Y outputs enter Hi-Z."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage. Operating range 1.65 V to 3.6 V (data retention >=1.5 V). Absolute maximum 6.5 V."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/sn74lvc244adbr.pdf",
        "pages": 36,
        "sha256": "6fe0efecbb5e363d",
        "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": "74LVC244",
      "logic_family": "74LVC",
      "function_code": "244",
      "function_class": "Buffer",
      "function_name": "Octal Buffer/Driver, Non-Inverting, 3-State",
      "manufacturer": "Texas Instruments",
      "is_specialty": false
    },
    "models_3d": [
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        "file": "sn74lvc244adbr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.8,
          7.2,
          2.1
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "c9a01a276d0b4d9561efd58f2fcee56f52c1b6ab464ea7a0380cab4e87a924e6",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn74lvc244adbr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          7.2,
          2.1
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "dc228258b06adf3cd6ff28ec90a7d4b94951fd3b42cd3714e851053b81e67b69",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SSOP-20-208mil",
      "Category": "Logic",
      "Pins": "20"
    }
  },
  "variants": [
    {
      "mpn": "SN74LVC244ADBR",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC244ADBRAN",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC244ADBRANS",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC244ADBRADGV",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC244ADBRADW",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC244ADBRARGY",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC244ADBRAZQN",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC244ADBRAPW",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC244ADBRARWP",
      "kind": "packaging"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sn74lvc244adbr"
  ],
  "discovery_pitch": "SN74LVC244ADBR (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn74lvc244adbr.kicad_sym",
    "sn74lvc244adbr.kicad_mod",
    "sn74lvc244adbr.glb",
    "sn74lvc244adbr.step",
    "sn74lvc244adbr.lbr",
    "docs/hero.png",
    "docs/sn74lvc244adbr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-25T07:41:14.389Z"
}