LM555IMM

{
  "slug": "lm555imm",
  "version": "0.1.0",
  "type": "component",
  "description": "HGSEMI Timers, MSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "clock-timing",
    "lm555imm",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm555imm.kicad_sym",
    "lm555imm.kicad_mod",
    "lm555imm.glb",
    "lm555imm.step",
    "lm555imm.lbr",
    "docs/hero.png",
    "docs/lm555imm-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm555imm-hero.glb",
    "lm555imm-hero.overlay.json",
    "lm555imm-etched.glb"
  ],
  "component": {
    "mpn": "LM555IMM",
    "manufacturer": "HGSEMI",
    "package": "MSOP-8",
    "pin_count": 8,
    "category": "Clock/Timing",
    "subcategory": "Timers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/787635c4976a5fdad1e9d9144422265e.pdf",
    "parts": {
      "symbol": "lm555imm.kicad_sym",
      "footprint": "lm555imm.kicad_mod",
      "model_3d": "lm555imm-hero.glb",
      "model_3d_plain": "lm555imm-etched.glb",
      "model_3d_step": "lm555imm-etched.step",
      "model_3d_step_plain": "lm555imm.step",
      "lbr": "lm555imm.lbr"
    },
    "distributor_links": {
      "lcsc": "C5160087"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T21:45:39Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (power ground) pin."
      },
      {
        "number": "2",
        "name": "Trig",
        "type": "input",
        "description": "Trigger input; output goes high when trigger voltage falls below 1/3 Vcc, with trigger voltage typically 5.0 V at Vcc=15 V and 1.6 V at Vcc=5 V."
      },
      {
        "number": "3",
        "name": "Output",
        "type": "output",
        "description": "Timer output, able to source/sink up to ±200 mA recommended (±220 mA absolute maximum)."
      },
      {
        "number": "4",
        "name": "Reset",
        "type": "input",
        "description": "Active-low reset input that forces output low and turns the discharge switch on; high level is 1.5 V min to Vcc, low level is GND to 0.5 V at Vcc=5 V."
      },
      {
        "number": "5",
        "name": "Cont",
        "type": "input",
        "description": "Control voltage input, typically 10.0 V at Vcc=15 V and 3.3 V at Vcc=5 V, used to modulate pulse width or position."
      },
      {
        "number": "6",
        "name": "Thres",
        "type": "input",
        "description": "Threshold input; output goes low when threshold voltage exceeds 2/3 Vcc, with threshold current max 250 nA at Vcc=15 V."
      },
      {
        "number": "7",
        "name": "Disch",
        "type": "passive",
        "description": "Discharge pin (open-collector discharge switch) for the timing capacitor, with off leakage max 100 nA and saturation voltage max 480 mV at Vcc=15 V, Idis=15 mA."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply pin, operating range 4.5 V to 15 V (absolute maximum 18 V)."
      }
    ],
    "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",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The ordering table lists LM555IMM/TR in MSOP-8; the pin table is shared across DIP/SOP/MSOP/TSSOP so"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0716,
        "at": "2026-10-22T21:45:25"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/787635c4976a5fdad1e9d9144422265e.pdf",
        "pages": 11,
        "sha256": "625d5aa31573226e",
        "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": [
      {
        "file": "lm555imm.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3.0,
          0.95
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "847c4c5023fe1603fbd36900a5dcc4bd3901ba473f71d42c9a469f0236eaadf3",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm555imm-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3.0,
          0.95
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "87b153048e921c3c8d63ef26902195f7bfff9a1cd82e069b060be3afa62f64e8",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}