main
Ray Set visibility: public 4a79fd3 11d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "sn74lvth540dwr",
  "title": "SN74LVTH540DWR",
  "brief": "Texas Instruments Buffers, Drivers, Receivers, Transceivers, SOIC-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "logic",
    "sn74lvth540dwr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "SN74LVTH540DWR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Buffers, Drivers, Receivers, Transceivers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/sn74lvth540",
    "parts": {
      "symbol": "sn74lvth540dwr.kicad_sym",
      "footprint": "sn74lvth540dwr.kicad_mod",
      "model_3d": "sn74lvth540dwr-hero.glb",
      "model_3d_plain": "sn74lvth540dwr.glb",
      "model_3d_step": "sn74lvth540dwr-etched.step",
      "model_3d_step_plain": "sn74lvth540dwr.step",
      "lbr": "sn74lvth540dwr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2878444",
      "digikey": "296-38254-2-ND",
      "mouser": "595-SN74LVTH540DWR"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T13:14:20Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-38254-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-SN74LVTH540DWR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "OE1",
        "type": "input",
        "description": "Active-low output enable; if either OE1 or OE2 is high, all outputs are forced to the high-impedance state."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "input",
        "description": "Data input for inverting channel 1 with active bus-hold, which holds an unused or undriven input at a valid logic level and should not be combined with external pullup or pulldown resistors."
      },
      {
        "number": "3",
        "name": "A2",
        "type": "input",
        "description": "Data input for inverting channel 2 with active bus-hold, which holds an unused or undriven input at a valid logic level and should not be combined with external pullup or pulldown resistors."
      },
      {
        "number": "4",
        "name": "A3",
        "type": "input",
        "description": "Data input for inverting channel 3 with active bus-hold, which holds an unused or undriven input at a valid logic level and should not be combined with external pullup or pulldown resistors."
      },
      {
        "number": "5",
        "name": "A4",
        "type": "input",
        "description": "Data input for inverting channel 4 with active bus-hold, which holds an unused or undriven input at a valid logic level and should not be combined with external pullup or pulldown resistors."
      },
      {
        "number": "6",
        "name": "A5",
        "type": "input",
        "description": "Data input for inverting channel 5 with active bus-hold, which holds an unused or undriven input at a valid logic level and should not be combined with external pullup or pulldown resistors."
      },
      {
        "number": "7",
        "name": "A6",
        "type": "input",
        "description": "Data input for inverting channel 6 with active bus-hold, which holds an unused or undriven input at a valid logic level and should not be combined with external pullup or pulldown resistors."
      },
      {
        "number": "8",
        "name": "A7",
        "type": "input",
        "description": "Data input for inverting channel 7 with active bus-hold, which holds an unused or undriven input at a valid logic level and should not be combined with external pullup or pulldown resistors."
      },
      {
        "number": "9",
        "name": "A8",
        "type": "input",
        "description": "Data input for inverting channel 8 with active bus-hold, which holds an unused or undriven input at a valid logic level and should not be combined with external pullup or pulldown resistors."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "11",
        "name": "Y8",
        "type": "tri_state",
        "description": "Inverting 3-state output for channel 8 that goes high-impedance when OE1 or OE2 is high, and is rated at IOH of -32 mA and IOL of 64 mA for the SN74LVTH540 at VCC = 3 V."
      },
      {
        "number": "12",
        "name": "Y7",
        "type": "tri_state",
        "description": "Inverting 3-state output for channel 7 that goes high-impedance when OE1 or OE2 is high, and is rated at IOH of -32 mA and IOL of 64 mA for the SN74LVTH540 at VCC = 3 V."
      },
      {
        "number": "13",
        "name": "Y6",
        "type": "tri_state",
        "description": "Inverting 3-state output for channel 6 that goes high-impedance when OE1 or OE2 is high, and is rated at IOH of -32 mA and IOL of 64 mA for the SN74LVTH540 at VCC = 3 V."
      },
      {
        "number": "14",
        "name": "Y5",
        "type": "tri_state",
        "description": "Inverting 3-state output for channel 5 that goes high-impedance when OE1 or OE2 is high, and is rated at IOH of -32 mA and IOL of 64 mA for the SN74LVTH540 at VCC = 3 V."
      },
      {
        "number": "15",
        "name": "Y4",
        "type": "tri_state",
        "description": "Inverting 3-state output for channel 4 that goes high-impedance when OE1 or OE2 is high, and is rated at IOH of -32 mA and IOL of 64 mA for the SN74LVTH540 at VCC = 3 V."
      },
      {
        "number": "16",
        "name": "Y3",
        "type": "tri_state",
        "description": "Inverting 3-state output for channel 3 that goes high-impedance when OE1 or OE2 is high, and is rated at IOH of -32 mA and IOL of 64 mA for the SN74LVTH540 at VCC = 3 V."
      },
      {
        "number": "17",
        "name": "Y2",
        "type": "tri_state",
        "description": "Inverting 3-state output for channel 2 that goes high-impedance when OE1 or OE2 is high, and is rated at IOH of -32 mA and IOL of 64 mA for the SN74LVTH540 at VCC = 3 V."
      },
      {
        "number": "18",
        "name": "Y1",
        "type": "tri_state",
        "description": "Inverting 3-state output for channel 1 that goes high-impedance when OE1 or OE2 is high, and is rated at IOH of -32 mA and IOL of 64 mA for the SN74LVTH540 at VCC = 3 V."
      },
      {
        "number": "19",
        "name": "OE2",
        "type": "input",
        "description": "Active-low output enable; if either OE1 or OE2 is high, all outputs are forced to the high-impedance state."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, recommended range 2.7 V to 3.6 V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pin-to-number mapping was reconstructed from the figure's label text, which was extracted withou; The datasheet's function table and logic diagram indicate that OE1 and OE2 both gate all eight outpu"
        ],
        "pages_sent": 21,
        "cost_usd": 0.0832,
        "at": "2026-10-11T13:14:00"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/sn74lvth540",
        "pages": 21,
        "sha256": "64a818d767ce4d8f",
        "source_tier": "lcsc"
      },
      "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"
    },
    "models_3d": [
      {
        "file": "sn74lvth540dwr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          10.3,
          12.8,
          2.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "59a10b341e6972b31d81802a048060326da627d8b92dcf4263064f4f62ec808e",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn74lvth540dwr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          10.3,
          12.8,
          2.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "107ab3ac20d3190cb9f5f7c81b160bad2dddd00de8e8b2909b84ec2ed37eea65",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-20",
      "Category": "Logic",
      "Pins": "20"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sn74lvth540dwr"
  ],
  "discovery_pitch": "SN74LVTH540DWR (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn74lvth540dwr.kicad_sym",
    "sn74lvth540dwr.kicad_mod",
    "sn74lvth540dwr.glb",
    "sn74lvth540dwr.step",
    "sn74lvth540dwr.lbr",
    "docs/hero.png",
    "docs/sn74lvth540dwr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sn74lvth540dwr-hero.glb",
    "sn74lvth540dwr-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}