CAT823TTDI-GT3

{
  "schema_version": 1,
  "type": "component",
  "slug": "cat823ttdi-gt3",
  "title": "CAT823TTDI-GT3",
  "brief": "onsemi Supervisor and Reset ICs, TSOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "cat823ttdi-gt3"
  ],
  "component": {
    "mpn": "CAT823TTDI-GT3",
    "manufacturer": "onsemi",
    "package": "TSOT-23-5",
    "pin_count": 5,
    "category": "PMIC",
    "subcategory": "Supervisor and Reset ICs",
    "datasheet": "https://www.onsemi.com/pdf/datasheet/cat823ttdi-gt3-d.pdf",
    "parts": {
      "symbol": "cat823ttdi-gt3.kicad_sym",
      "footprint": "cat823ttdi-gt3.kicad_mod",
      "model_3d": "cat823ttdi-gt3-etched.glb",
      "model_3d_plain": "cat823ttdi-gt3.glb",
      "model_3d_step": "cat823ttdi-gt3-etched.step",
      "model_3d_step_plain": "cat823ttdi-gt3.step",
      "lbr": "cat823ttdi-gt3.lbr"
    },
    "distributor_links": {
      "lcsc": "C91360"
    },
    "pins": [
      {
        "number": "1",
        "name": "RESET",
        "type": "output",
        "description": "CMOS push-pull active-LOW reset output (RESET, bar). Driven low whenever VCC < VRST (3.08 V typ for the T version), while MR is held low, or on a watchdog timeout, then held low for tRP (200 ms typ, 400 ms max) after the fault clears. VOL <= 0.3 V at 1.2 mA sink; VOH >= 0.8 x VCC at 30 uA source."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground / device return. 0 V reference for all logic thresholds and outputs."
      },
      {
        "number": "3",
        "name": "MR",
        "type": "input",
        "description": "Manual Reset input (MR, active low). Internally pulled high by a 52 kOhm (35-75 kOhm) resistor and designed to be driven low by a pushbutton, open-drain, or CMOS output. Pulling MR low asserts RESET; on release the reset stays active for tRP (140 ms min). VIL <= 0.3 x VCC, VIH >= 0.7 x VCC, minimum valid pulse width tPB = 1 us, noise immunity 100 ns."
      },
      {
        "number": "4",
        "name": "WDI",
        "type": "input",
        "description": "Watchdog Timer Input. Must see a low-to-high or high-to-low transition within tWD (1.6 s typ, 3.2 s max) or RESET is pulled active for tRP. Can be disabled by leaving open or tri-stating (internally serviced within the timeout period). VIL <= 0.3 x VCC, VIH >= 0.7 x VCC, min pulse width 50 ns."
      },
      {
        "number": "5",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage input. Recommended operating range 1.2 to 5.5 V (over -40 to +85 C); absolute maximum 6 V. Typical supply current ICC = 4 uA (12 uA max) for the CAT823 T version. Monitored against the VRST threshold (3.08 V typ for T suffix) to generate RESET."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.onsemi.com/pdf/datasheet/cat823ttdi-gt3-d.pdf",
        "pages": 11,
        "sha256": "c3276e3d139e9445",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -1.1375,
        -0.95
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-23-5@sha256:455a3f7c3e5eb5b8",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "cat823ttdi-gt3.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cat823ttdi-gt3-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "59720ddc707aa90474ff2ac834f82c5830c1870cf2998479a6111dd91d0d7129",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "TSOT-23-5",
      "Category": "PMIC",
      "Pins": "5"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "cat823ttdi-gt3"
  ],
  "discovery_pitch": "CAT823TTDI-GT3 (onsemi) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cat823ttdi-gt3.kicad_sym",
    "cat823ttdi-gt3.kicad_mod",
    "cat823ttdi-gt3.glb",
    "cat823ttdi-gt3.step",
    "cat823ttdi-gt3.lbr",
    "docs/hero.png",
    "docs/cat823ttdi-gt3-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cat823ttdi-gt3-etched.step"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "CAT823TTDI-GT3",
      "kind": "packaging"
    },
    {
      "mpn": "CAT823TTDI-GT3STDI-GT3",
      "kind": "packaging"
    },
    {
      "mpn": "CAT823TTDI-GT3RTDI-GT3",
      "kind": "packaging"
    },
    {
      "mpn": "CAT823TTDI-GT3ZTDI-GT3",
      "kind": "packaging"
    },
    {
      "mpn": "CAT823TTDI-GT3YTDI-GT3",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-24T18:28:29.694Z"
}