ICM7555MM

{
  "slug": "icm7555mm",
  "version": "0.1.0",
  "type": "component",
  "description": "HGSEMI Timers / Counters, MSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "clock-timing",
    "icm7555mm",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "icm7555mm.kicad_sym",
    "icm7555mm.kicad_mod",
    "icm7555mm.glb",
    "icm7555mm.step",
    "icm7555mm.lbr",
    "docs/hero.png",
    "docs/icm7555mm-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "icm7555mm-hero.glb",
    "icm7555mm-hero.overlay.json",
    "icm7555mm-etched.glb"
  ],
  "component": {
    "mpn": "ICM7555MM",
    "manufacturer": "HGSEMI",
    "package": "MSOP-8",
    "pin_count": 8,
    "category": "Clock/Timing",
    "subcategory": "Timers / Counters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8758163542107807744",
    "parts": {
      "symbol": "icm7555mm.kicad_sym",
      "footprint": "icm7555mm.kicad_mod",
      "model_3d": "icm7555mm-hero.glb",
      "model_3d_plain": "icm7555mm-etched.glb",
      "model_3d_step": "icm7555mm-etched.step",
      "model_3d_step_plain": "icm7555mm.step",
      "lbr": "icm7555mm.lbr"
    },
    "distributor_links": {
      "lcsc": "C5160092"
    },
    "distributor_check": {
      "checked_at": "2026-10-20T08:04:34Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground; all voltages are measured relative to this pin and it is the source of the internal discharge transistor."
      },
      {
        "number": "2",
        "name": "TRIGGER",
        "type": "input",
        "description": "Trigger input; a voltage below 1/3 VCC sets the flip-flop and drives OUTPUT high, with typical input current of 20pA."
      },
      {
        "number": "3",
        "name": "OUTPUT",
        "type": "output",
        "description": "Timer output, TTL/CMOS compatible at 5V, with VOH of 4.0V min at 5V and -2mA and VOL of 0.4V max at 3.2mA."
      },
      {
        "number": "4",
        "name": "RESET",
        "type": "input",
        "description": "Active-low reset of the flip-flop; LOW forces OUTPUT low and turns the discharge switch on, with the reset voltage threshold typically 0.7V at VCC=5V."
      },
      {
        "number": "5",
        "name": "CONTROL VOLTAGE",
        "type": "input",
        "description": "Control voltage input that sets the comparator threshold, typically 3.33V at VCC=5V (2/3 VCC)."
      },
      {
        "number": "6",
        "name": "THRESHOLD",
        "type": "input",
        "description": "Threshold input; a voltage above 2/3 VCC resets the flip-flop, driving OUTPUT low and turning on the discharge switch, with typical input current of 20pA."
      },
      {
        "number": "7",
        "name": "DISCHARGE",
        "type": "passive",
        "description": "Open-drain discharge transistor output for the timing capacitor, with saturation voltage of 400mV max at 10mA and VCC=5V."
      },
      {
        "number": "8",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply voltage, recommended 4.5V to 15V with absolute maximum of 15V."
      }
    ],
    "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": [
          "extractor flagged: The datasheet gives no pin description table. Names and numbers come from the pinout drawing on page; The datasheet text does not give the pin type of DISCHARGE. It is an open-drain N-FET output, so I c",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 11,
        "cost_usd": 0.2165,
        "at": "2026-10-20T08:04:21"
      },
      "datasheet": {
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        "pages": 11,
        "sha256": "e95f11bad730cc7b",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "origin": "footprint origin = pad-pattern centre",
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "847c4c5023fe1603fbd36900a5dcc4bd3901ba473f71d42c9a469f0236eaadf3",
        "checked": "2026-10-20",
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      },
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        "role": "eda",
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        "origin": "footprint origin = pad-pattern centre",
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        "sha256": "cce634297033c8fe1a3d5e7c20db71fee7d3b40c955f8ac83fd6f026973a503a",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
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  }
}