LF398N

{
  "slug": "lf398n",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Sample / Hold Amplifiers, PDIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "amplifiers-comparators",
    "lf398n",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lf398n.kicad_sym",
    "lf398n.kicad_mod",
    "lf398n.glb",
    "lf398n.step",
    "lf398n.lbr",
    "docs/hero.png",
    "docs/lf398n-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lf398n-hero.glb",
    "lf398n-hero.overlay.json"
  ],
  "component": {
    "mpn": "LF398N",
    "manufacturer": "Texas Instruments",
    "package": "PDIP-8",
    "pin_count": 8,
    "category": "Amplifiers/Comparators",
    "subcategory": "Sample / Hold Amplifiers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lf398-n",
    "parts": {
      "symbol": "lf398n.kicad_sym",
      "footprint": "lf398n.kicad_mod",
      "model_3d": "lf398n-hero.glb",
      "model_3d_plain": "lf398n.glb",
      "model_3d_step": "lf398n-etched.step",
      "model_3d_step_plain": "lf398n.step",
      "lbr": "lf398n.lbr"
    },
    "distributor_links": {
      "lcsc": "C131953",
      "digikey": "LF398N-ND",
      "mouser": "926-LF398N"
    },
    "distributor_check": {
      "checked_at": "2026-10-10T16:03:30Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LF398N-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "926-LF398N",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "V+",
        "type": "power_in",
        "description": "Positive supply; the device operates from ±5 V to ±18 V, with ±15 V as the recommended nominal supply."
      },
      {
        "number": "2",
        "name": "OFFSET ADJUST",
        "type": "passive",
        "description": "DC offset compensation pin used to adjust the input offset voltage."
      },
      {
        "number": "3",
        "name": "INPUT",
        "type": "input",
        "description": "Analog signal input to the sample-and-hold amplifier."
      },
      {
        "number": "4",
        "name": "V-",
        "type": "power_in",
        "description": "Negative supply; the device operates from ±5 V to ±18 V, with ±15 V as the recommended nominal supply."
      },
      {
        "number": "5",
        "name": "OUTPUT",
        "type": "output",
        "description": "Analog sample-and-hold output."
      },
      {
        "number": "6",
        "name": "Ch",
        "type": "passive",
        "description": "Hold capacitor connection; the hold capacitor is connected to this pin, and its short-circuit duration is limited to 10 seconds."
      },
      {
        "number": "7",
        "name": "LOGIC REFERENCE",
        "type": "input",
        "description": "Reference input for the LOGIC input; one of the logic pins must be at least 2 V below V+ and 3 V above V- for proper logic operation."
      },
      {
        "number": "8",
        "name": "LOGIC",
        "type": "input",
        "description": "Logic input that selects sample mode or hold mode; it is compatible with TTL, PMOS and CMOS levels with a differential threshold of 1.4 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: Pin table gives PDIP-8 pin assignments in a combined multi-column table (SOIC-14 / TO-99 / PDIP-8); ; Datasheet pin descriptions are brief; limits in the descriptions for V+, V-, Ch, LOGIC REFERENCE and; Pin types for OFFSET ADJUST and Ch were set to passive, and INPUT/OUTPUT were set to input/output, b"
        ],
        "pages_sent": 8,
        "cost_usd": 0.045,
        "at": "2026-10-10T16:03:14"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lf398-n",
        "pages": 40,
        "sha256": "2119fa6b79e75b65",
        "source_tier": "lcsc"
      },
      "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": "lf398n.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          9.27,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "4a377a56a8d9e9c0b86c095ef9ecc1869ac19e7f5069a3247b294250bf4f235d",
        "checked": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lf398n-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "378f6a7762bf8fe8851d52b1df916b05d8dd35428b04f38c2796669583a32ff7",
        "checked": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}