LF444ACN

{
  "schema_version": 1,
  "type": "component",
  "slug": "lf444acn",
  "title": "LF444ACN",
  "brief": "Texas Instruments Pre-ordered Chips, PDIP-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": [
    "component",
    "interface ics",
    "lf444acn",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LF444ACN",
    "manufacturer": "Texas Instruments",
    "package": "PDIP-14",
    "pin_count": 14,
    "category": "Interface ICs",
    "subcategory": "Pre-ordered Chips",
    "datasheet": "https://www.ti.com/lit/ds/symlink/lf444acn.pdf",
    "parts": {
      "symbol": "lf444acn.kicad_sym",
      "footprint": "lf444acn.kicad_mod",
      "model_3d": "lf444acn-hero.glb",
      "model_3d_plain": "lf444acn-etched.glb",
      "model_3d_step": "lf444acn-etched.step",
      "model_3d_step_plain": "lf444acn.step",
      "lbr": "lf444acn.lbr"
    },
    "distributor_links": {
      "lcsc": "C1346425",
      "digikey": "LF444ACN-ND",
      "mouser": "926-LF444ACN"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T09:16:23Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LF444ACN-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "926-LF444ACN",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "OUT1",
        "type": "output",
        "description": "Output of amplifier 1."
      },
      {
        "number": "2",
        "name": "IN1-",
        "type": "input",
        "description": "Inverting input of amplifier 1; JFET input, differential input voltage up to ±30V (±38V for LF444A)."
      },
      {
        "number": "3",
        "name": "IN1+",
        "type": "input",
        "description": "Non-inverting input of amplifier 1; JFET input with 10^12 Ω input resistance."
      },
      {
        "number": "4",
        "name": "V+",
        "type": "power_in",
        "description": "Positive supply voltage; absolute maximum ±22V for LF444A (±18V for LF444) across the supplies."
      },
      {
        "number": "5",
        "name": "IN2+",
        "type": "input",
        "description": "Non-inverting input of amplifier 2."
      },
      {
        "number": "6",
        "name": "IN2-",
        "type": "input",
        "description": "Inverting input of amplifier 2."
      },
      {
        "number": "7",
        "name": "OUT2",
        "type": "output",
        "description": "Output of amplifier 2."
      },
      {
        "number": "8",
        "name": "OUT3",
        "type": "output",
        "description": "Output of amplifier 3."
      },
      {
        "number": "9",
        "name": "IN3-",
        "type": "input",
        "description": "Inverting input of amplifier 3."
      },
      {
        "number": "10",
        "name": "IN3+",
        "type": "input",
        "description": "Non-inverting input of amplifier 3."
      },
      {
        "number": "11",
        "name": "V-",
        "type": "power_in",
        "description": "Negative supply voltage; input voltages must not exceed the negative supply, and common-mode offset may increase within 3V of it."
      },
      {
        "number": "12",
        "name": "IN4+",
        "type": "input",
        "description": "Non-inverting input of amplifier 4."
      },
      {
        "number": "13",
        "name": "IN4-",
        "type": "input",
        "description": "Inverting input of amplifier 4."
      },
      {
        "number": "14",
        "name": "OUT4",
        "type": "output",
        "description": "Output of amplifier 4."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 20,
        "cost_usd": 0.3528,
        "at": "2026-10-23T09:16:08"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/lf444acn.pdf",
        "pages": 20,
        "sha256": "0257d5a9c8584304",
        "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": "lf444acn.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,
          19.05,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "3dae072a95c64bee0d1e58be8e75383639f5017ab982de1749d05808a4eed058",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lf444acn-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": [
          7.874,
          19.05,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "3c162e864cb7486a14c754cbb30c21c4f1b9186ac3af30b630853fe376afdede",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "PDIP-14",
      "Category": "Interface ICs",
      "Pins": "14"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "0257d5a9c8584304cb909dd62d4a2ec4b5cebe24b15fefe75ac69ddf125f6f16",
      "rows": [
        {
          "name": "Supply Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -22,
          "typ": null,
          "max": 22,
          "conditions": "LF444A",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Differential Input Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -38,
          "typ": null,
          "max": 38,
          "conditions": "LF444A",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage Range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -19,
          "typ": null,
          "max": 19,
          "conditions": "LF444A",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 900,
          "conditions": "NAK Package",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Junction Temperature",
          "symbol": "Tj max",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "NAK Package",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "TA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Soldering Temperature, Dual-In-Line",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "Soldering, 10 sec.",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance Junction-Ambient",
          "symbol": "θjA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "Typical, NAK Package",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Temperature Range (commercial)",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": 0,
          "typ": null,
          "max": 70,
          "conditions": "LF444A commercial range",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Offset Voltage",
          "symbol": "VOS",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 2,
          "max": 5,
          "conditions": "RS = 10k, TA = 25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Offset Voltage",
          "symbol": "VOS",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 6.5,
          "conditions": "RS = 10k, 0°C ≤ TA ≤ +70°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Offset Current",
          "symbol": "IOS",
          "kind": "electrical",
          "unit": "pA",
          "min": null,
          "typ": 5,
          "max": 25,
          "conditions": "VS = ±15V, Tj = 25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Offset Current",
          "symbol": "IOS",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": 1.5,
          "conditions": "VS = ±15V, Tj = 70°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Bias Current",
          "symbol": "IB",
          "kind": "electrical",
          "unit": "pA",
          "min": null,
          "typ": 10,
          "max": 50,
          "conditions": "VS = ±15V, Tj = 25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Bias Current",
          "symbol": "IB",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "VS = ±15V, Tj = 70°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Large Signal Voltage Gain",
          "symbol": "AVOL",
          "kind": "electrical",
          "unit": "V/mV",
          "min": 50,
          "typ": 100,
          "max": null,
          "conditions": "VS = ±15V, VO = ±10V, RL = 10 kΩ, TA = 25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Large Signal Voltage Gain",
          "symbol": "AVOL",
          "kind": "electrical",
          "unit": "V/mV",
          "min": 25,
          "typ": null,
          "max": null,
          "conditions": "Over Temperature",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Swing",
          "symbol": "VO",
          "kind": "electrical",
          "unit": "V",
          "min": -12,
          "typ": 13,
          "max": 12,
          "conditions": "VS = ±15V, RL = 10 kΩ",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Common-Mode Voltage Range",
          "symbol": "VCM",
          "kind": "electrical",
          "unit": "V",
          "min": 16,
          "typ": 18,
          "max": null,
          "conditions": "positive range",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Common-Mode Voltage Range",
          "symbol": "VCM",
          "kind": "electrical",
          "unit": "V",
          "min": -17,
          "typ": null,
          "max": null,
          "conditions": "negative range",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Common-Mode Rejection Ratio",
          "symbol": "CMRR",
          "kind": "electrical",
          "unit": "dB",
          "min": 80,
          "typ": 100,
          "max": null,
          "conditions": "RS ≤ 10 kΩ",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply Voltage Rejection Ratio",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": 80,
          "typ": 100,
          "max": null,
          "conditions": "See(3)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply Current",
          "symbol": "IS",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.6,
          "max": 0.8,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Average TC of Input Offset Voltage",
          "symbol": "ΔVOS/ΔT",
          "kind": "temperature_coefficient",
          "unit": "μV/°C",
          "min": null,
          "typ": 10,
          "max": null,
          "conditions": "RS = 10 kΩ",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Amplifier-to-Amplifier Coupling",
          "symbol": "",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": -120,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Slew Rate",
          "symbol": "SR",
          "kind": "electrical",
          "unit": "V/μs",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "VS = ±15V, TA = 25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Gain-Bandwidth Product",
          "symbol": "GBW",
          "kind": "electrical",
          "unit": "MHz",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "VS = ±15V, TA = 25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Equivalent Input Noise Voltage",
          "symbol": "en",
          "kind": "electrical",
          "unit": "nV/√Hz",
          "min": null,
          "typ": 35,
          "max": null,
          "conditions": "TA = 25°C, RS = 100Ω, f = 1 kHz",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Equivalent Input Noise Current",
          "symbol": "in",
          "kind": "electrical",
          "unit": "pA/√Hz",
          "min": null,
          "typ": 0.01,
          "max": null,
          "conditions": "TA = 25°C, f = 1 kHz",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lf444acn"
  ],
  "discovery_pitch": "LF444ACN (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"
  },
  "files": [
    "page.json",
    "README.md",
    "lf444acn.kicad_sym",
    "lf444acn.kicad_mod",
    "lf444acn.glb",
    "lf444acn.step",
    "lf444acn.lbr",
    "docs/hero.png",
    "docs/lf444acn-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lf444acn-hero.glb",
    "lf444acn-hero.overlay.json",
    "lf444acn-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}