HX809M-4.38V

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  "title": "HX809M-4.38V",
  "brief": "HX hengjiaxing HX809M 4 38V Supervisor and Reset ICs, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
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    "mpn": "HX809M-4.38V",
    "manufacturer": "HX hengjiaxing HX809M 4 38V",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Supervisor and Reset ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/b7470d7efab6dbc3e8c3b4450759f0b7.pdf",
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    "distributor_links": {
      "lcsc": "C296139"
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Chip ground reference (0 V). Connect to system ground."
      },
      {
        "number": "2",
        "name": "RESET",
        "type": "output",
        "description": "Active-low reset output. Driven low when VCC falls below the 4.38V (±2%) threshold and held low for the 350 ms (typ) reset delay after VCC recovers. VOL ≤ 0.4V at ISINK=3.2 mA; VOH ≥ VCC-1.5V at ISOURCE=800 µA (L/M/J variants). Max output current 20 mA."
      },
      {
        "number": "3",
        "name": "VCC",
        "type": "power_in",
        "description": "Chip supply / monitored input voltage. Operating range 0.9V-6.0V (absolute max 6V). The internal comparator trips RESET when VCC drops below 4.38V (±2%). Has VCC transient noise immunity."
      }
    ],
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      "pins": {
        "total": 3,
        "described": 3,
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        "refuses_to_fabricate": true
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        -0.95
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        "checked": "2026-10-07",
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        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HX hengjiaxing",
      "Package": "SOT-23",
      "Category": "PMIC",
      "Pins": "3"
    }
  },
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  "discovery_pitch": "HX809M-4.38V (HX hengjiaxing HX809M 4 38V) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
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  "updated_at": "2026-09-24T22:21:00.834Z"
}