SN74LVC4245APWR

{
  "schema_version": 1,
  "type": "component",
  "slug": "sn74lvc4245apwr",
  "title": "SN74LVC4245APWR",
  "brief": "Texas Instruments Buffer/Driver/Transceiver, TSSOP-24. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "logic",
    "sn74lvc4245apwr"
  ],
  "component": {
    "mpn": "SN74LVC4245APWR",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-24",
    "pin_count": 24,
    "category": "Logic",
    "subcategory": "Buffer/Driver/Transceiver",
    "datasheet": "https://www.ti.com/lit/ds/symlink/sn74lvc4245a.pdf",
    "parts": {
      "symbol": "sn74lvc4245apwr.kicad_sym",
      "footprint": "sn74lvc4245apwr.kicad_mod",
      "model_3d": "sn74lvc4245apwr-etched.glb",
      "model_3d_plain": "sn74lvc4245apwr.glb",
      "model_3d_step": "sn74lvc4245apwr-etched.step",
      "model_3d_step_plain": "sn74lvc4245apwr.step",
      "lbr": "sn74lvc4245apwr.lbr"
    },
    "distributor_links": {
      "digikey": "296-12183-2-ND",
      "lcsc": "C7859"
    },
    "pins": [
      {
        "number": "1",
        "name": "VCCA",
        "type": "power_in",
        "description": "Power supply for A side. Recommended 4.5V to 5.5V; absolute max 6.5V. Bypass with 100nF close to the pin."
      },
      {
        "number": "2",
        "name": "DIR",
        "type": "input",
        "description": "Direction control input, referenced to VCCA. DIR=H drives A→B; DIR=L drives B→A. VIH≥2V, VIL≤0.8V."
      },
      {
        "number": "3",
        "name": "A1",
        "type": "bidirectional",
        "description": "A-port transceiver I/O bit 1, referenced to VCCA. Drives ±24mA at 5V VCCA; input tolerant to VCCA+0.5V."
      },
      {
        "number": "4",
        "name": "A2",
        "type": "bidirectional",
        "description": "A-port transceiver I/O bit 2, referenced to VCCA."
      },
      {
        "number": "5",
        "name": "A3",
        "type": "bidirectional",
        "description": "A-port transceiver I/O bit 3, referenced to VCCA."
      },
      {
        "number": "6",
        "name": "A4",
        "type": "bidirectional",
        "description": "A-port transceiver I/O bit 4, referenced to VCCA."
      },
      {
        "number": "7",
        "name": "A5",
        "type": "bidirectional",
        "description": "A-port transceiver I/O bit 5, referenced to VCCA."
      },
      {
        "number": "8",
        "name": "A6",
        "type": "bidirectional",
        "description": "A-port transceiver I/O bit 6, referenced to VCCA."
      },
      {
        "number": "9",
        "name": "A7",
        "type": "bidirectional",
        "description": "A-port transceiver I/O bit 7, referenced to VCCA."
      },
      {
        "number": "10",
        "name": "A8",
        "type": "bidirectional",
        "description": "A-port transceiver I/O bit 8, referenced to VCCA."
      },
      {
        "number": "11",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground. Tie all GND pins (11, 12, 13) to a common low-impedance ground plane."
      },
      {
        "number": "12",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground."
      },
      {
        "number": "13",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground."
      },
      {
        "number": "14",
        "name": "B8",
        "type": "bidirectional",
        "description": "B-port transceiver I/O bit 8, referenced to VCCB. Drives ±24mA at VCCB=3V; input tolerant to VCCB+0.5V."
      },
      {
        "number": "15",
        "name": "B7",
        "type": "bidirectional",
        "description": "B-port transceiver I/O bit 7, referenced to VCCB."
      },
      {
        "number": "16",
        "name": "B6",
        "type": "bidirectional",
        "description": "B-port transceiver I/O bit 6, referenced to VCCB."
      },
      {
        "number": "17",
        "name": "B5",
        "type": "bidirectional",
        "description": "B-port transceiver I/O bit 5, referenced to VCCB."
      },
      {
        "number": "18",
        "name": "B4",
        "type": "bidirectional",
        "description": "B-port transceiver I/O bit 4, referenced to VCCB."
      },
      {
        "number": "19",
        "name": "B3",
        "type": "bidirectional",
        "description": "B-port transceiver I/O bit 3, referenced to VCCB."
      },
      {
        "number": "20",
        "name": "B2",
        "type": "bidirectional",
        "description": "B-port transceiver I/O bit 2, referenced to VCCB."
      },
      {
        "number": "21",
        "name": "B1",
        "type": "bidirectional",
        "description": "B-port transceiver I/O bit 1, referenced to VCCB."
      },
      {
        "number": "22",
        "name": "OE",
        "type": "input",
        "description": "Active-low output-enable input, referenced to VCCA. OE=L enables the transceiver outputs; OE=H places both A- and B-port I/Os in high-impedance."
      },
      {
        "number": "23",
        "name": "VCCB",
        "type": "power_in",
        "description": "Power supply for B side. Pin diagram shows 'NC,VCCB' - Pin Functions table lists this pin as VCCB (2.7V to 3.6V recommended); it may be left NC only if pin 24 is used as the sole VCCB tie."
      },
      {
        "number": "24",
        "name": "VCCB",
        "type": "power_in",
        "description": "Power supply for B side. Recommended 2.7V to 3.6V; absolute max 4.6V. Bypass with 100nF close to the pin."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/sn74lvc4245a.pdf",
        "pages": 28,
        "sha256": "29a63cd196f43f2b",
        "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": [
        -2.8625,
        -3.575
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "TSSOP-24_4.4x7.8mm_P0.65mm@sha256:951159bb3a87997b",
      "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": [
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        "file": "sn74lvc4245apwr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          7.8,
          0.97
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "706322f42d9793ebf28d5b80100a68bfa8769998a00b78acadf7af937fc1454f",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn74lvc4245apwr-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,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "9f294abd3d6adbf41586a80b104b3c160aaded08771765a6db261750430736b3",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "TSSOP-24",
      "Category": "Logic",
      "Pins": "24"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sn74lvc4245apwr"
  ],
  "discovery_pitch": "SN74LVC4245APWR (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn74lvc4245apwr.kicad_sym",
    "sn74lvc4245apwr.kicad_mod",
    "sn74lvc4245apwr.glb",
    "sn74lvc4245apwr.step",
    "sn74lvc4245apwr-etched.step",
    "sn74lvc4245apwr.lbr",
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    "docs/sn74lvc4245apwr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
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  "variants": [
    {
      "mpn": "SN74LVC4245APWR",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC4245APWRDB",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC4245APWRDBR",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC4245APWRDW",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC4245APWRDWR",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T07:48:14.652Z"
}