CAT811LTBI-GT3

{
  "schema_version": 1,
  "type": "component",
  "slug": "cat811ltbi-gt3",
  "title": "CAT811LTBI-GT3",
  "brief": "onsemi Monitors & Reset Circuits, SOT-143-4. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "power supply chip",
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  "component": {
    "mpn": "CAT811LTBI-GT3",
    "manufacturer": "onsemi",
    "package": "SOT-143-4",
    "pin_count": 4,
    "category": "Power Supply Chip",
    "subcategory": "Monitors & Reset Circuits",
    "datasheet": "https://www.onsemi.com/pdf/datasheet/cat811ltbi-gt3-d.pdf",
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      "lcsc": "C890462",
      "digikey": "CAT811LTBI-GT3OSTR-ND",
      "mouser": "698-CAT811LTBI-GT3"
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      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "CAT811LTBI-GT3OSTR-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "698-CAT811LTBI-GT3",
        "status": "found",
        "lifecycle": "End of Life"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "2",
        "name": "RESET",
        "type": "output",
        "description": "Active LOW push-pull reset output, asserted if VCC falls below the reset threshold and held low for at least 140 ms after VCC rises above the threshold."
      },
      {
        "number": "3",
        "name": "MR",
        "type": "input",
        "description": "Active LOW manual reset input with internal 20 kΩ pull-up; a logic LOW asserts RESET for as long as MR is low plus 140 ms after it returns HIGH, and it should be left open if unused."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_in",
        "description": "Monitored power supply voltage, with a VCC range of 1.0 V to 5.5 V (0°C to +70°C) or 1.2 V to 5.5 V (−40°C to +85°C)."
      }
    ],
    "provenance": {
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      "factory_chain": {
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        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 10,
        "cost_usd": 0.0682,
        "at": "2026-10-26T18:44:20"
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      "datasheet": {
        "url": "https://www.onsemi.com/pdf/datasheet/cat811ltbi-gt3-d.pdf",
        "pages": 10,
        "sha256": "bfdb418218f49e72",
        "source_tier": "mfr"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 4,
        "described": 4,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
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        "role": "plain",
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        "seat": "z = 0",
        "extents_mm": [
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          2.9,
          1.1
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "SOT-143-4",
      "Category": "Power Supply Chip",
      "Pins": "4"
    },
    "appearance": {
      "contacts": {
        "quote": "• Available in SOT−143 Packages with Sn or NiPdAu Green Lead",
        "page": 1,
        "doc": "ds.pdf",
        "plating": "tin"
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    "characteristics": {
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      "rows": [
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          "name": "VCC Range",
          "symbol": "VCC",
          "kind": "electrical",
          "unit": "V",
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          "typ": null,
          "max": 5.5,
          "conditions": "TA = 0°C to +70°C",
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        {
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          "symbol": "VCC",
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          "conditions": "TA = -40°C to +85°C",
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        },
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          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
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          "typ": 8,
          "max": 20,
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        },
        {
          "name": "Reset Threshold Voltage L",
          "symbol": "VTH",
          "kind": "electrical",
          "unit": "V",
          "min": 4.56,
          "typ": 4.63,
          "max": 4.7,
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        },
        {
          "name": "Reset Active Timeout Period",
          "symbol": "",
          "kind": "timing",
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          "symbol": "VOL",
          "kind": "electrical",
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          "typ": null,
          "max": 0.4,
          "conditions": "VCC = VTH min, ISINK = 3.2 mA CAT811L",
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        },
        {
          "name": "RESET Output Voltage Low",
          "symbol": "VOL",
          "kind": "electrical",
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          "typ": null,
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          "conditions": "VCC > 1.0 V, ISINK = 50 µA",
          "source_page": 4,
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        },
        {
          "name": "MR Minimum Pulse Width",
          "symbol": "tMR",
          "kind": "timing",
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          "typ": null,
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          "conditions": "",
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        },
        {
          "name": "MR Input Threshold High",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.3,
          "typ": null,
          "max": null,
          "conditions": "VCC > VTH (MAX), CAT811L",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "MR Input Threshold Low",
          "symbol": "VIL",
          "kind": "electrical",
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          "typ": null,
          "max": 0.8,
          "conditions": "VCC > VTH (MAX), CAT811L",
          "source_page": 4,
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        },
        {
          "name": "MR Pull-up Resistance",
          "symbol": "",
          "kind": "electrical",
          "unit": "kΩ",
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          "typ": 20,
          "max": 75,
          "conditions": "",
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        },
        {
          "name": "Reset Threshold Tempco",
          "symbol": "",
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          "unit": "ppm/°C",
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          "typ": 30,
          "max": null,
          "conditions": "",
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        },
        {
          "name": "VCC to Reset Delay",
          "symbol": "",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "VCC = VTH to (VTH - 100 mV)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Any pin with respect to ground",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
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        },
        {
          "name": "Input Current, VCC",
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        },
        {
          "name": "Output Current RESET",
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        {
          "name": "Rate of Raise, VCC",
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        {
          "name": "Storage Temperature Range",
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        {
          "name": "Operating Ambient Temperature Range",
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        {
          "name": "Lead Soldering Temperature",
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          "conditions": "10 seconds",
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