SN74LVC2T45DCUR

{
  "schema_version": 1,
  "type": "component",
  "slug": "sn74lvc2t45dcur",
  "title": "SN74LVC2T45DCUR",
  "brief": "Texas Instruments Buffer/Driver/Transceiver, VSSOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "logic",
    "sn74lvc2t45dcur"
  ],
  "component": {
    "mpn": "SN74LVC2T45DCUR",
    "manufacturer": "Texas Instruments",
    "package": "VSSOP-8",
    "pin_count": 8,
    "category": "Logic",
    "subcategory": "Buffer/Driver/Transceiver",
    "datasheet": "https://www.ti.com/lit/ds/symlink/sn74lvc2t45dcur.pdf",
    "parts": {
      "symbol": "sn74lvc2t45dcur.kicad_sym",
      "footprint": "sn74lvc2t45dcur.kicad_mod",
      "model_3d": "sn74lvc2t45dcur-etched.glb",
      "model_3d_plain": "sn74lvc2t45dcur.glb",
      "model_3d_step": "sn74lvc2t45dcur-etched.step",
      "model_3d_step_plain": "sn74lvc2t45dcur.step",
      "lbr": "sn74lvc2t45dcur.lbr"
    },
    "distributor_links": {
      "digikey": "296-17014-2-ND",
      "lcsc": "C15741"
    },
    "pins": [
      {
        "number": "1",
        "name": "VCCA",
        "type": "power_in",
        "description": "A-port supply rail. Accepts 1.65 V to 5.5 V and sets the A-side logic level as well as the DIR input reference. Must be powered up before or with VCCB."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "bidirectional",
        "description": "Bit-1 data I/O on the A port, referenced to VCCA (1.65-5.5 V). Acts as input when DIR = H (A->B) and as 3-state output when DIR = L (B->A). Input circuit is always active and must be held at a valid level."
      },
      {
        "number": "3",
        "name": "A2",
        "type": "bidirectional",
        "description": "Bit-2 data I/O on the A port, referenced to VCCA (1.65-5.5 V). Acts as input when DIR = H (A->B) and as 3-state output when DIR = L (B->A). Input circuit is always active and must be held at a valid level."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground. Must be connected before any supply rail is applied per the power-up sequence."
      },
      {
        "number": "5",
        "name": "DIR",
        "type": "input",
        "description": "Direction-control input, referenced to VCCA. DIR = H transmits A -> B (B outputs enabled); DIR = L transmits B -> A (A outputs enabled). Input circuit is always active and must not float."
      },
      {
        "number": "6",
        "name": "B2",
        "type": "bidirectional",
        "description": "Bit-2 data I/O on the B port, referenced to VCCB (1.65-5.5 V). Acts as output when DIR = H and as 3-state input when DIR = L. 3-state; both ports go high-impedance if either VCC is at GND."
      },
      {
        "number": "7",
        "name": "B1",
        "type": "bidirectional",
        "description": "Bit-1 data I/O on the B port, referenced to VCCB (1.65-5.5 V). Acts as output when DIR = H and as 3-state input when DIR = L. 3-state; both ports go high-impedance if either VCC is at GND."
      },
      {
        "number": "8",
        "name": "VCCB",
        "type": "power_in",
        "description": "B-port supply rail. Accepts 1.65 V to 5.5 V and sets the B-side logic level. May be ramped up along with or after VCCA."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/sn74lvc2t45dcur.pdf",
        "pages": 26,
        "sha256": "8d9730a9217e2efc",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -1.4,
        -0.75
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "VSSOP-8_2.3x2mm_P0.5mm@sha256:dca72da69de3263a",
      "mark": "drawn"
    },
    "logic": {
      "family_id": "74LVC2T45",
      "logic_family": "74LVC",
      "function_code": "2T45",
      "function_class": null,
      "function_name": null,
      "manufacturer": "Texas Instruments",
      "is_specialty": false
    },
    "models_3d": [
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        "file": "sn74lvc2t45dcur.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.1,
          2,
          0.85
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "353552981eef35cb93635057d4aeb89aef22648c77af6fd095e328bfe6b834bd",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn74lvc2t45dcur-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          2,
          0.85
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "2c3ff3addc36a3913a7dda945c369fc7cbaa2aaee3e2f34078db78fcd0b11fd3",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "VSSOP-8",
      "Category": "Logic",
      "Pins": "8"
    }
  },
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sn74lvc2t45dcur"
  ],
  "discovery_pitch": "SN74LVC2T45DCUR (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn74lvc2t45dcur.kicad_sym",
    "sn74lvc2t45dcur.kicad_mod",
    "sn74lvc2t45dcur.glb",
    "sn74lvc2t45dcur.step",
    "sn74lvc2t45dcur-etched.step",
    "sn74lvc2t45dcur.lbr",
    "docs/hero.png",
    "docs/sn74lvc2t45dcur-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
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  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "SN74LVC2T45DCUR",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC2T45DCURDCUT",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC2T45DCURDCTR",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC2T45DCURDCTT",
      "kind": "packaging"
    },
    {
      "mpn": "SN74LVC2T45DCURYZPR",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T07:46:27.253Z"
}