SN74AHCT126QPWRQ1

{
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  "type": "component",
  "slug": "sn74ahct126qpwrq1",
  "title": "SN74AHCT126QPWRQ1",
  "brief": "Texas Instruments Buffers, Drivers, Receivers, Transceivers, TSSOP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "logic",
    "sn74ahct126qpwrq1",
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  "component": {
    "mpn": "SN74AHCT126QPWRQ1",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-14",
    "pin_count": 14,
    "category": "Logic",
    "subcategory": "Buffers, Drivers, Receivers, Transceivers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/sn74ahct126-q1",
    "parts": {
      "symbol": "sn74ahct126qpwrq1.kicad_sym",
      "footprint": "sn74ahct126qpwrq1.kicad_mod",
      "model_3d": "sn74ahct126qpwrq1-etched.glb",
      "model_3d_plain": "sn74ahct126qpwrq1.glb",
      "model_3d_step": "sn74ahct126qpwrq1-etched.step",
      "model_3d_step_plain": "sn74ahct126qpwrq1.step",
      "lbr": "sn74ahct126qpwrq1.lbr"
    },
    "distributor_links": {
      "lcsc": "C2675614",
      "digikey": "296-49870-2-ND",
      "mouser": "595-SN74AHCT126QPWRQ"
    },
    "distributor_check": {
      "checked_at": "2026-09-26T20:23:06Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-49870-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-SN74AHCT126QPWRQ",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1OE",
        "type": "input",
        "description": "Output enable input for buffer 1; high enables output to follow data input, low places output in high-impedance state."
      },
      {
        "number": "2",
        "name": "1A",
        "type": "input",
        "description": "Data input for buffer 1; logic level transferred to 1Y output when 1OE is high."
      },
      {
        "number": "3",
        "name": "1Y",
        "type": "tri_state",
        "description": "Tristate output for buffer 1; passes 1A input when 1OE is high, high-impedance when low."
      },
      {
        "number": "4",
        "name": "2OE",
        "type": "input",
        "description": "Output enable input for buffer 2; high enables output to follow data input, low places output in high-impedance state."
      },
      {
        "number": "5",
        "name": "2A",
        "type": "input",
        "description": "Data input for buffer 2; logic level transferred to 2Y output when 2OE is high."
      },
      {
        "number": "6",
        "name": "2Y",
        "type": "tri_state",
        "description": "Tristate output for buffer 2; passes 2A input when 2OE is high, high-impedance when low."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground, 0V reference."
      },
      {
        "number": "8",
        "name": "3Y",
        "type": "tri_state",
        "description": "Tristate output for buffer 3; passes 3A input when 3OE is high, high-impedance when low."
      },
      {
        "number": "9",
        "name": "3A",
        "type": "input",
        "description": "Data input for buffer 3; logic level transferred to 3Y output when 3OE is high."
      },
      {
        "number": "10",
        "name": "3OE",
        "type": "input",
        "description": "Output enable input for buffer 3; high enables output to follow data input, low places output in high-impedance state."
      },
      {
        "number": "11",
        "name": "4Y",
        "type": "tri_state",
        "description": "Tristate output for buffer 4; passes 4A input when 4OE is high, high-impedance when low."
      },
      {
        "number": "12",
        "name": "4A",
        "type": "input",
        "description": "Data input for buffer 4; logic level transferred to 4Y output when 4OE is high."
      },
      {
        "number": "13",
        "name": "4OE",
        "type": "input",
        "description": "Output enable input for buffer 4; high enables output to follow data input, low places output in high-impedance state."
      },
      {
        "number": "14",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply voltage; recommended operating range 4.5V to 5.5V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-4-6",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 30,
        "cost_usd": 0.2994,
        "at": "2026-09-26T20:22:47"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/sn74ahct126-q1",
        "pages": 30,
        "sha256": "7161780ff9b93586",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 14,
        "described": 14,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "TSSOP-14",
      "Category": "Logic",
      "Pins": "14"
    }
  },
  "variants": [],
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
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  "discovery_triggers": [
    "sn74ahct126qpwrq1"
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  "discovery_pitch": "SN74AHCT126QPWRQ1 (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"
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  "files": [
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    "sn74ahct126qpwrq1.lbr",
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    "docs/sn74ahct126qpwrq1-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
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  "visibility": {
    "public": true
  }
}