LM2903DR

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm2903dr",
  "title": "LM2903DR",
  "brief": "UMW Comparators, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "op-amp-cmp",
    "lm2903dr"
  ],
  "component": {
    "mpn": "LM2903DR",
    "manufacturer": "UMW",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Op-amp/Cmp",
    "subcategory": "Comparators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/a4f64799199e170496fcd29285c150e3.pdf",
    "parts": {
      "symbol": "lm2903dr.kicad_sym",
      "footprint": "lm2903dr.kicad_mod",
      "model_3d": "lm2903dr-etched.glb",
      "model_3d_plain": "lm2903dr.glb",
      "model_3d_step": "lm2903dr-etched.step",
      "model_3d_step_plain": "lm2903dr.step",
      "lbr": "lm2903dr.lbr"
    },
    "distributor_links": {
      "lcsc": "C668214"
    },
    "pins": [
      {
        "number": "1",
        "name": "OUTA",
        "type": "output",
        "description": "Comparator A open-collector output. Requires an external pull-up resistor to VCC (or another supply). Can sink up to ~20 mA continuously; output saturation voltage typ 150 mV / max 400 mV at I_sink ≤ 4 mA."
      },
      {
        "number": "2",
        "name": "INA-",
        "type": "input",
        "description": "Comparator A inverting input. Input bias current typ 25 nA (max 250 nA at 25 °C). Common-mode range extends from GND up to VCC−1.5 V. Absolute input voltage must remain ≥ −0.3 V of ground/V−."
      },
      {
        "number": "3",
        "name": "INA+",
        "type": "input",
        "description": "Comparator A non-inverting input. Same electrical characteristics as INA−: bias ~25 nA typ, common-mode range 0 V to VCC−1.5 V, differential input voltage range up to VCC."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Negative supply / ground reference (V−). For single-supply operation tie to 0 V; for split-supply operation connect to the negative rail (down to −15 V relative to V+)."
      },
      {
        "number": "5",
        "name": "INB+",
        "type": "input",
        "description": "Comparator B non-inverting input. Bias ~25 nA typ, common-mode range 0 V to VCC−1.5 V; must stay ≥ −0.3 V of V−."
      },
      {
        "number": "6",
        "name": "INB-",
        "type": "input",
        "description": "Comparator B inverting input. Same electrical characteristics as the A-side inputs: bias ~25 nA typ, offset ±5 mV max, common-mode range 0 V to VCC−1.5 V."
      },
      {
        "number": "7",
        "name": "OUTB",
        "type": "output",
        "description": "Comparator B open-collector output. Requires an external pull-up resistor. Sink current up to ~20 mA; V_OL typ 150 mV at 4 mA sink."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply. Single-supply range 2.0 V to 36 V, or +V rail of a split ±1.0 V to ±15 V supply. Absolute maximum 36 V (single) / ±18 V (split). Quiescent current typ 0.4 mA (1 mA max) with both comparators unloaded."
      }
    ],
    "provenance": {
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        "url": "https://datasheet.lcsc.com/datasheet/pdf/a4f64799199e170496fcd29285c150e3.pdf",
        "pages": 11,
        "sha256": "a1043fb752b1d7b1",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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      "footprint": "viewers/footprint.html"
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    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "lm2903dr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
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        "origin": "footprint origin = pad-pattern centre",
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "02e38412ec340f9745086b77d15f4d68b74a96110932ee967d6a651060a77523",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "UMW",
      "Package": "SOP-8",
      "Category": "Op-amp/Cmp",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "a1043fb752b1d7b1",
      "rows": [
        {
          "name": "Input Offset Voltage",
          "symbol": "VIO",
          "kind": "electrical",
          "unit": "mV",
          "min": -5,
          "typ": 1,
          "max": 5,
          "conditions": "TA=25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Offset Voltage",
          "symbol": "VIO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 9,
          "conditions": "0°C≤TA≤70°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Offset Current",
          "symbol": "IIO",
          "kind": "electrical",
          "unit": "nA",
          "min": -50,
          "typ": 5,
          "max": 50,
          "conditions": "TA=25°C",
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          "source": "datasheet"
        },
        {
          "name": "Input Offset Current",
          "symbol": "IIO",
          "kind": "electrical",
          "unit": "nA",
          "min": -150,
          "typ": null,
          "max": 150,
          "conditions": "0°C≤TA≤70°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Bias Current",
          "symbol": "IIB",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": 25,
          "max": 250,
          "conditions": "TA=25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Bias Current",
          "symbol": "IIB",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": 400,
          "conditions": "0°C≤TA≤70°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Common Mode Voltage Range",
          "symbol": "VICR",
          "kind": "electrical",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "TA=25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Voltage Gain",
          "symbol": "AVOL",
          "kind": "electrical",
          "unit": "V/mV",
          "min": 50,
          "typ": 200,
          "max": null,
          "conditions": "RL≥15kΩ, VCC=15V, TA=25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Saturation Voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 150,
          "max": 400,
          "conditions": "Vin≥1.0V, Vin+=0V, ISink≤4.0mA, TA=25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Saturation Voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 700,
          "conditions": "Vin≥1.0V, Vin+=0V, ISink≤4.0mA, 0°C≤TA≤70°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Sink Current",
          "symbol": "ISink",
          "kind": "electrical",
          "unit": "mA",
          "min": 6,
          "typ": 16,
          "max": null,
          "conditions": "Vin-=0V, Vin+≥1.0V, VO=5.0V, TA=25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply Current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.4,
          "max": 1,
          "conditions": "RL=∞ Both Comparators, TA=25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply Current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1,
          "max": 2.5,
          "conditions": "RL=∞ Both Comparators, VCC=30V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Leakage Current",
          "symbol": "IOL",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": 0.1,
          "max": 1000,
          "conditions": "Vin-=0V, Vin+≥1.0V, VO=5.0V, TA=25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Large Signal Response Time",
          "symbol": "tTLH",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 300,
          "max": null,
          "conditions": "Vin=TTL, Logic Swing, Vref=1.4V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Response Time",
          "symbol": "",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": 1.3,
          "max": null,
          "conditions": "VRL=5.0V, RL=5.1kΩ, TA=25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Voltage",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 36,
          "conditions": "+36 or ±18 V (split supply)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Differential Voltage Range",
          "symbol": "VIDR",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 36,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Common Mode Voltage Range",
          "symbol": "VICR",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 36,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output Sink Current",
          "symbol": "ISink",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 570,
          "conditions": "TA=25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Operating Junction Temperature",
          "symbol": "TJ(max)",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "ESD Protection at any Pin, Human Body Model",
          "symbol": "VESD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 2000,
          "conditions": "Human body model",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "ESD Protection at any Pin, Machine Model",
          "symbol": "VESD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "Machine model",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Ambient Temperature Range",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 105,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Wide Single-Supply Range",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": 36,
          "conditions": "Single supply (features)",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Derating above 25°C",
          "symbol": "1/RθJA",
          "kind": "thermal",
          "unit": "mW/°C",
          "min": null,
          "typ": 5.7,
          "max": null,
          "conditions": "Derate above 25°C",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "LM2903DR (UMW) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
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  "variants": [
    {
      "mpn": "LM2903DR",
      "kind": "packaging"
    },
    {
      "mpn": "LM2903DRPT",
      "kind": "packaging"
    },
    {
      "mpn": "LM2903DRPWR",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-28T16:25:07.281Z"
}