TLC555MM

{
  "slug": "tlc555mm",
  "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",
    "tlc555mm",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tlc555mm.kicad_sym",
    "tlc555mm.kicad_mod",
    "tlc555mm.glb",
    "tlc555mm.step",
    "tlc555mm.lbr",
    "docs/hero.png",
    "docs/tlc555mm-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "tlc555mm-hero.glb",
    "tlc555mm-hero.overlay.json",
    "tlc555mm-etched.glb"
  ],
  "component": {
    "mpn": "TLC555MM",
    "manufacturer": "HGSEMI",
    "package": "MSOP-8",
    "pin_count": 8,
    "category": "Clock/Timing",
    "subcategory": "Timers / Counters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8758141684998131712",
    "parts": {
      "symbol": "tlc555mm.kicad_sym",
      "footprint": "tlc555mm.kicad_mod",
      "model_3d": "tlc555mm-hero.glb",
      "model_3d_plain": "tlc555mm-etched.glb",
      "model_3d_step": "tlc555mm-etched.step",
      "model_3d_step_plain": "tlc555mm.step",
      "lbr": "tlc555mm.lbr"
    },
    "distributor_links": {
      "lcsc": "C5160091"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T05:26:18Z",
      "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 to comparator B; a voltage below 1/3 VCC sets the output HIGH, with trigger current of 10 pA."
      },
      {
        "number": "3",
        "name": "OUTPUT",
        "type": "output",
        "description": "Timer output, TTL/CMOS compatible at 5V, with VOL 0.4 V max at 3.2 mA sink and VOH 4.0 V min at -2 mA source (VCC=5V)."
      },
      {
        "number": "4",
        "name": "RESET",
        "type": "input",
        "description": "Active-low reset; LOW forces the output LOW and turns the discharge switch ON, and it is tied to VCC when unused."
      },
      {
        "number": "5",
        "name": "CONTROL VOLTAGE",
        "type": "input",
        "description": "Control voltage input that sets the comparator threshold, typically 3.33 V at VCC=5V (2/3 VCC)."
      },
      {
        "number": "6",
        "name": "THRESHOLD",
        "type": "input",
        "description": "Threshold input to comparator A; a voltage above 2/3 VCC resets the output LOW, with threshold current of 10 pA."
      },
      {
        "number": "7",
        "name": "DISCHARGE",
        "type": "passive",
        "description": "Open-drain discharge transistor output that discharges the timing capacitor, with 100 mV typical saturation voltage at 10 mA (VCC=5V)."
      },
      {
        "number": "8",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply, recommended 4.5 V to 15 V (absolute maximum 15 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+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pinout drawing is shared by DIP-8, SOP-8 and MSOP-8, so MSOP-8 pin numbers come from the combine; DISCHARGE is an open-drain transistor output. The datasheet does not give an ERC type, so I chose pa",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 11,
        "cost_usd": 0.2284,
        "at": "2026-10-18T05:24:08"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8758141684998131712",
        "pages": 11,
        "sha256": "777c468f30a3b658",
        "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": "tlc555mm.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": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tlc555mm-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": "f40c8b50e32706c4b05c53854bf0d39904e69fb7f9e3596b11aa3c6731c43b1f",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}