SN74LVC4245ADBR

{
  "schema_version": 1,
  "type": "component",
  "slug": "sn74lvc4245adbr",
  "title": "SN74LVC4245ADBR",
  "brief": "Texas Instruments Buffer/Driver/Transceiver, SSOP-24-208mil. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "logic",
    "sn74lvc4245adbr"
  ],
  "component": {
    "mpn": "SN74LVC4245ADBR",
    "manufacturer": "Texas Instruments",
    "package": "SSOP-24-208mil",
    "pin_count": 24,
    "category": "Logic",
    "subcategory": "Buffer/Driver/Transceiver",
    "datasheet": "https://www.ti.com/lit/ds/symlink/sn74lvc4245adbr.pdf",
    "parts": {
      "symbol": "sn74lvc4245adbr.kicad_sym",
      "footprint": "sn74lvc4245adbr.kicad_mod",
      "model_3d": "sn74lvc4245adbr-etched.glb",
      "model_3d_plain": "sn74lvc4245adbr.glb",
      "model_3d_step": "sn74lvc4245adbr-etched.step",
      "model_3d_step_plain": "sn74lvc4245adbr.step",
      "lbr": "sn74lvc4245adbr.lbr"
    },
    "distributor_links": {
      "digikey": "296-8514-2-ND",
      "lcsc": "C7857"
    },
    "pins": [
      {
        "number": "1",
        "name": "VCCA",
        "type": "power_in",
        "description": "A-port supply rail (typically 5 V, up to 5.5 V). Also powers the DIR and OE control circuitry; determines VIH/VIL thresholds of the control inputs."
      },
      {
        "number": "2",
        "name": "DIR",
        "type": "input",
        "description": "Direction control input, referenced to VCCA. DIR = L transmits B->A; DIR = H transmits A->B (when OE = L)."
      },
      {
        "number": "3",
        "name": "A1",
        "type": "bidirectional",
        "description": "A-port channel 1 data I/O, referenced to VCCA (0 to VCCA). Drives up to +/-24 mA at VCCA = 4.5-5.5 V."
      },
      {
        "number": "4",
        "name": "A2",
        "type": "bidirectional",
        "description": "A-port channel 2 data I/O, referenced to VCCA."
      },
      {
        "number": "5",
        "name": "A3",
        "type": "bidirectional",
        "description": "A-port channel 3 data I/O, referenced to VCCA."
      },
      {
        "number": "6",
        "name": "A4",
        "type": "bidirectional",
        "description": "A-port channel 4 data I/O, referenced to VCCA."
      },
      {
        "number": "7",
        "name": "A5",
        "type": "bidirectional",
        "description": "A-port channel 5 data I/O, referenced to VCCA."
      },
      {
        "number": "8",
        "name": "A6",
        "type": "bidirectional",
        "description": "A-port channel 6 data I/O, referenced to VCCA."
      },
      {
        "number": "9",
        "name": "A7",
        "type": "bidirectional",
        "description": "A-port channel 7 data I/O, referenced to VCCA."
      },
      {
        "number": "10",
        "name": "A8",
        "type": "bidirectional",
        "description": "A-port channel 8 data I/O, referenced to VCCA."
      },
      {
        "number": "11",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference. Continuous current per GND pin +/-100 mA max; tie all GND pins to the board ground plane."
      },
      {
        "number": "12",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference (second GND pin)."
      },
      {
        "number": "13",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference (third GND pin)."
      },
      {
        "number": "14",
        "name": "B8",
        "type": "bidirectional",
        "description": "B-port channel 8 data I/O, referenced to VCCB (2.7-3.6 V)."
      },
      {
        "number": "15",
        "name": "B7",
        "type": "bidirectional",
        "description": "B-port channel 7 data I/O, referenced to VCCB."
      },
      {
        "number": "16",
        "name": "B6",
        "type": "bidirectional",
        "description": "B-port channel 6 data I/O, referenced to VCCB."
      },
      {
        "number": "17",
        "name": "B5",
        "type": "bidirectional",
        "description": "B-port channel 5 data I/O, referenced to VCCB."
      },
      {
        "number": "18",
        "name": "B4",
        "type": "bidirectional",
        "description": "B-port channel 4 data I/O, referenced to VCCB."
      },
      {
        "number": "19",
        "name": "B3",
        "type": "bidirectional",
        "description": "B-port channel 3 data I/O, referenced to VCCB."
      },
      {
        "number": "20",
        "name": "B2",
        "type": "bidirectional",
        "description": "B-port channel 2 data I/O, referenced to VCCB."
      },
      {
        "number": "21",
        "name": "B1",
        "type": "bidirectional",
        "description": "B-port channel 1 data I/O, referenced to VCCB."
      },
      {
        "number": "22",
        "name": "OE",
        "type": "input",
        "description": "Active-low output enable, referenced to VCCA. OE = L enables the transceivers per the DIR setting; OE = H puts both A and B ports in high-impedance (isolation). Tie to VCCA through a pull-up so it ramps with VCCA."
      },
      {
        "number": "23",
        "name": "VCCB",
        "type": "power_in",
        "description": "B-port supply rail (2.7 V to 3.6 V). Sets the B-port I/O logic level and drive strength (up to +/-24 mA at 3 V, +/-12 mA at 2.7 V)."
      },
      {
        "number": "24",
        "name": "VCCB",
        "type": "power_in",
        "description": "B-port supply rail (second VCCB pin, tie to pin 23)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/sn74lvc4245adbr.pdf",
        "pages": 17,
        "sha256": "4b1df8bf97da30c0",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 24,
        "described": 24,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -3.5,
        -3.575
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SSOP-24_5.3x8.2mm_P0.65mm@sha256:120d739ab88ed463",
      "mark": "drawn"
    },
    "logic": {
      "family_id": "74LVC4245",
      "logic_family": "74LVC",
      "function_code": "4245",
      "function_class": "Transceiver",
      "function_name": "Octal Dual-Supply Bus Transceiver",
      "manufacturer": "Texas Instruments",
      "is_specialty": false
    },
    "models_3d": [
      {
        "file": "sn74lvc4245adbr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.8,
          8.2,
          2.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "77dd0a1fc7e70e9eda1bfde9dde937dc6e391803cff9978790523c850c85a21d",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn74lvc4245adbr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.8,
          8.2,
          2.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "32fb4f99835e54e8871c618b1ed8b72872cd0b68c6d183807c5821f0d43e0793",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SSOP-24-208mil",
      "Category": "Logic",
      "Pins": "24"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sn74lvc4245adbr"
  ],
  "discovery_pitch": "SN74LVC4245ADBR (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn74lvc4245adbr.kicad_sym",
    "sn74lvc4245adbr.kicad_mod",
    "sn74lvc4245adbr.glb",
    "sn74lvc4245adbr.step",
    "sn74lvc4245adbr-etched.step",
    "sn74lvc4245adbr.lbr",
    "docs/hero.png",
    "docs/sn74lvc4245adbr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "SN74LVC4245ADBR",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC4245ADBRE4",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC4245ADBRG4",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC4245ADBRDW",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC4245ADBRDWE4",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC4245ADBRDWG4",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC4245ADBRDWR",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC4245ADBRDWRE4",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC4245ADBRDWRG4",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC4245ADBRPW",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC4245ADBRPWG4",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC4245ADBRPWR",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC4245ADBRPWRE4",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC4245ADBRPWRG4",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC4245ADBRPWT",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC4245ADBRPWTG4",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T07:47:50.055Z"
}