SN74LS126ADR

{
  "slug": "sn74ls126adr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Buffers, Drivers, Receivers, Transceivers, SOIC-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "sn74ls126adr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn74ls126adr.kicad_sym",
    "sn74ls126adr.kicad_mod",
    "sn74ls126adr.glb",
    "sn74ls126adr.step",
    "sn74ls126adr.lbr",
    "docs/hero.png",
    "docs/sn74ls126adr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sn74ls126adr-hero.glb",
    "sn74ls126adr-hero.overlay.json",
    "sn74ls126adr-etched.glb"
  ],
  "component": {
    "mpn": "SN74LS126ADR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-14",
    "pin_count": 14,
    "category": "Logic",
    "subcategory": "Buffers, Drivers, Receivers, Transceivers",
    "datasheet": "https://www.ti.com/lit/ds/symlink/sn74ls126a.pdf",
    "parts": {
      "symbol": "sn74ls126adr.kicad_sym",
      "footprint": "sn74ls126adr.kicad_mod",
      "model_3d": "sn74ls126adr-hero.glb",
      "model_3d_plain": "sn74ls126adr-etched.glb",
      "model_3d_step": "sn74ls126adr-etched.step",
      "model_3d_step_plain": "sn74ls126adr.step",
      "lbr": "sn74ls126adr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2865257",
      "digikey": "296-14882-2-ND",
      "mouser": "595-SN74LS126ADR"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T04:22:21Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-14882-2-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-SN74LS126ADR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1G",
        "type": "input",
        "description": "Output enable for channel 1; on the '126/LS126A the outputs are disabled when G is low, so G is active-high enable (the overbar shown for the '125 variant does not apply)."
      },
      {
        "number": "2",
        "name": "1A",
        "type": "input",
        "description": "Data input for channel 1; for the LS126A, IIL is -0.4 mA max at VI = 0.4 V and IIH is 20 µA max at VI = 2.7 V."
      },
      {
        "number": "3",
        "name": "1Y",
        "type": "tri_state",
        "description": "Three-state buffer output for channel 1; when enabled it sinks up to 24 mA (IOL max) and sources up to -2.6 mA (IOH max), and it is high-impedance when disabled."
      },
      {
        "number": "4",
        "name": "2G",
        "type": "input",
        "description": "Output enable for channel 2; on the '126/LS126A the outputs are disabled when G is low, so G is active-high enable."
      },
      {
        "number": "5",
        "name": "2A",
        "type": "input",
        "description": "Data input for channel 2; for the LS126A, IIL is -0.4 mA max at VI = 0.4 V and IIH is 20 µA max at VI = 2.7 V."
      },
      {
        "number": "6",
        "name": "2Y",
        "type": "tri_state",
        "description": "Three-state buffer output for channel 2; when enabled it sinks up to 24 mA (IOL max) and sources up to -2.6 mA (IOH max), and it is high-impedance when disabled."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device; voltages are referenced to the network ground terminal."
      },
      {
        "number": "8",
        "name": "3Y",
        "type": "tri_state",
        "description": "Three-state buffer output for channel 3; when enabled it sinks up to 24 mA (IOL max) and sources up to -2.6 mA (IOH max), and it is high-impedance when disabled."
      },
      {
        "number": "9",
        "name": "3A",
        "type": "input",
        "description": "Data input for channel 3; for the LS126A, IIL is -0.4 mA max at VI = 0.4 V and IIH is 20 µA max at VI = 2.7 V."
      },
      {
        "number": "10",
        "name": "3G",
        "type": "input",
        "description": "Output enable for channel 3; on the '126/LS126A the outputs are disabled when G is low, so G is active-high enable."
      },
      {
        "number": "11",
        "name": "4Y",
        "type": "tri_state",
        "description": "Three-state buffer output for channel 4; when enabled it sinks up to 24 mA (IOL max) and sources up to -2.6 mA (IOH max), and it is high-impedance when disabled."
      },
      {
        "number": "12",
        "name": "4A",
        "type": "input",
        "description": "Data input for channel 4; for the LS126A, IIL is -0.4 mA max at VI = 0.4 V and IIH is 20 µA max at VI = 2.7 V."
      },
      {
        "number": "13",
        "name": "4G",
        "type": "input",
        "description": "Output enable for channel 4; on the '126/LS126A the outputs are disabled when G is low, so G is active-high enable."
      },
      {
        "number": "14",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage: 4.75 V min, 5 V nominal, 5.25 V max for the SN74LS126A, with operating free-air temperature 0 °C to 70 °C."
      }
    ],
    "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 datasheet pinout is printed once for the D, N and NS packages together; the pin mapping is the s; Text extraction dropped the overbar/asterisk typography. The '126/LS126A enable is non-inverted (out; Input and output pin descriptions quote the LS126A limits from the electrical characteristics table "
        ],
        "pages_sent": 28,
        "cost_usd": 0.0946,
        "at": "2026-10-18T04:21:38"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/sn74ls126a.pdf",
        "pages": 28,
        "sha256": "f3be4110bb5f169b",
        "source_tier": "mfr"
      },
      "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"
    },
    "models_3d": [
      {
        "file": "sn74ls126adr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          8.7,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "3b9a775da256c8afcc28dcddfbc2eb3f266107fe61ce8446d96f2c52b6f44a70",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn74ls126adr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          8.7,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "2db7c01bb8ae1b926e697227da076b4871069c946c49b3a5ebaa49d5efe1446f",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}