LP311DR

{
  "slug": "lp311dr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Comparators, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "amplifiers-comparators",
    "lp311dr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lp311dr.kicad_sym",
    "lp311dr.kicad_mod",
    "lp311dr.glb",
    "lp311dr.step",
    "lp311dr.lbr",
    "docs/hero.png",
    "docs/lp311dr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lp311dr-hero.glb",
    "lp311dr-hero.overlay.json"
  ],
  "component": {
    "mpn": "LP311DR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Amplifiers/Comparators",
    "subcategory": "Comparators",
    "datasheet": "https://www.ti.com/lit/ds/symlink/lp311.pdf",
    "parts": {
      "symbol": "lp311dr.kicad_sym",
      "footprint": "lp311dr.kicad_mod",
      "model_3d": "lp311dr-hero.glb",
      "model_3d_plain": "lp311dr.glb",
      "model_3d_step": "lp311dr-etched.step",
      "model_3d_step_plain": "lp311dr.step",
      "lbr": "lp311dr.lbr"
    },
    "distributor_links": {
      "lcsc": "C354102",
      "digikey": "296-14608-2-ND",
      "mouser": "595-LP311DR"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T02:24:34Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-14608-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-LP311DR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "EMIT OUT",
        "type": "output",
        "description": "Emitter output, which can swing below the negative supply; voltage from emitter output to VCC− is rated at 30 V maximum."
      },
      {
        "number": "2",
        "name": "IN+",
        "type": "input",
        "description": "Non-inverting comparator input; with |VCC±| ≤ 15 V the input voltage must stay between VCC− + 0.5 V and VCC+ − 1.5 V, and the input voltage magnitude must never exceed ±15 V."
      },
      {
        "number": "3",
        "name": "IN−",
        "type": "input",
        "description": "Inverting comparator input; with |VCC±| ≤ 15 V the input voltage must stay between VCC− + 0.5 V and VCC+ − 1.5 V, and the input voltage magnitude must never exceed ±15 V."
      },
      {
        "number": "4",
        "name": "VCC−",
        "type": "power_in",
        "description": "Negative supply rail; the supply voltage VCC+ − VCC− is specified from 3.5 V to 30 V."
      },
      {
        "number": "5",
        "name": "BALANCE",
        "type": "passive",
        "description": "Offset-balancing pin used with a trim network to minimize input offset voltage; if offset balancing is not used, it should be shorted to BAL/STRB."
      },
      {
        "number": "6",
        "name": "BAL/STRB",
        "type": "input",
        "description": "Strobe input that turns the output off regardless of the inputs when pulled low; it must be current driven at 100 µA to 300 µA and must not be connected directly to ground."
      },
      {
        "number": "7",
        "name": "COL OUT",
        "type": "output",
        "description": "Collector output with 25 mA drive capability; voltage from collector output to VCC− is rated at 40 V maximum."
      },
      {
        "number": "8",
        "name": "VCC+",
        "type": "power_in",
        "description": "Positive supply rail; the supply voltage VCC+ − VCC− is specified from 3.5 V to 30 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 datasheet gives the SOIC-8 (D) pinout only as a top-view diagram where pin numbers and pin names; Pin types are KiCad ERC classes inferred from the function described in the text. BALANCE is typed p"
        ],
        "pages_sent": 14,
        "cost_usd": 0.0645,
        "at": "2026-10-08T02:24:18"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/lp311.pdf",
        "pages": 14,
        "sha256": "3c7d5a253861da53",
        "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"
    },
    "models_3d": [
      {
        "file": "lp311dr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lp311dr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "eece0d88ce8a9d9c45296fb96b9d1967775bf60db8abc8f52b531e86cfea9269",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}