SN74LVC540APWT

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  "type": "component",
  "slug": "sn74lvc540apwt",
  "title": "SN74LVC540APWT",
  "brief": "Texas Instruments Buffers, Drivers, Receivers, Transceivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
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  "component": {
    "mpn": "SN74LVC540APWT",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Buffers, Drivers, Receivers, Transceivers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/sn74lvc540a",
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    },
    "distributor_links": {
      "lcsc": "C1848205",
      "digikey": "296-SN74LVC540APWTTR-ND",
      "mouser": "595-SN74LVC540APWT"
    },
    "distributor_check": {
      "checked_at": "2026-10-05T23:50:17Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-SN74LVC540APWTTR-ND",
        "status": "found",
        "lifecycle": "Active"
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      "mouser": {
        "pn": "595-SN74LVC540APWT",
        "status": "found"
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    },
    "pins": [
      {
        "number": "1",
        "name": "OE1",
        "type": "input",
        "description": "Output Enable 1 (active low) that enables outputs when low with OE2 low and disables to high impedance when high."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "input",
        "description": "Channel 1 input accepting input voltage from 0V to 5.5V."
      },
      {
        "number": "3",
        "name": "A2",
        "type": "input",
        "description": "Channel 2 input accepting input voltage from 0V to 5.5V."
      },
      {
        "number": "4",
        "name": "A3",
        "type": "input",
        "description": "Channel 3 input accepting input voltage from 0V to 5.5V."
      },
      {
        "number": "5",
        "name": "A4",
        "type": "input",
        "description": "Channel 4 input accepting input voltage from 0V to 5.5V."
      },
      {
        "number": "6",
        "name": "A5",
        "type": "input",
        "description": "Channel 5 input accepting input voltage from 0V to 5.5V."
      },
      {
        "number": "7",
        "name": "A6",
        "type": "input",
        "description": "Channel 6 input accepting input voltage from 0V to 5.5V."
      },
      {
        "number": "8",
        "name": "A7",
        "type": "input",
        "description": "Channel 7 input accepting input voltage from 0V to 5.5V."
      },
      {
        "number": "9",
        "name": "A8",
        "type": "input",
        "description": "Channel 8 input accepting input voltage from 0V to 5.5V."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground providing reference voltage for the device."
      },
      {
        "number": "11",
        "name": "Y8",
        "type": "tri_state",
        "description": "Channel 8 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage."
      },
      {
        "number": "12",
        "name": "Y7",
        "type": "tri_state",
        "description": "Channel 7 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage."
      },
      {
        "number": "13",
        "name": "Y6",
        "type": "tri_state",
        "description": "Channel 6 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage."
      },
      {
        "number": "14",
        "name": "Y5",
        "type": "tri_state",
        "description": "Channel 5 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage."
      },
      {
        "number": "15",
        "name": "Y4",
        "type": "tri_state",
        "description": "Channel 4 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage."
      },
      {
        "number": "16",
        "name": "Y3",
        "type": "tri_state",
        "description": "Channel 3 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage."
      },
      {
        "number": "17",
        "name": "Y2",
        "type": "tri_state",
        "description": "Channel 2 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage."
      },
      {
        "number": "18",
        "name": "Y1",
        "type": "tri_state",
        "description": "Channel 1 inverted tri-state output with ±4 to ±24mA current capability depending on supply voltage."
      },
      {
        "number": "19",
        "name": "OE2",
        "type": "input",
        "description": "Output Enable 2 (active low) that enables outputs when low with OE1 low and disables to high impedance when high."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive power supply requiring 1.65V to 3.6V operating voltage."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 18,
        "cost_usd": 0.185,
        "at": "2026-10-05T23:50:01"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/sn74lvc540a",
        "pages": 41,
        "sha256": "c6e028cbd21e8c7e",
        "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"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "TSSOP-20",
      "Category": "Logic",
      "Pins": "20"
    }
  },
  "variants": [],
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  "discovery_pitch": "SN74LVC540APWT (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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