XD551

{
  "slug": "xd551",
  "version": "0.1.0",
  "type": "component",
  "description": "XINLUDA Timers / Counters, DIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "clock-timing",
    "xd551",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "xd551.kicad_sym",
    "xd551.kicad_mod",
    "xd551.glb",
    "xd551.step",
    "xd551.lbr",
    "docs/hero.png",
    "docs/xd551-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "xd551-hero.glb",
    "xd551-hero.overlay.json",
    "xd551-etched.glb"
  ],
  "component": {
    "mpn": "XD551",
    "manufacturer": "XINLUDA",
    "package": "DIP-8",
    "pin_count": 8,
    "category": "Clock/Timing",
    "subcategory": "Timers / Counters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588892970732949504",
    "parts": {
      "symbol": "xd551.kicad_sym",
      "footprint": "xd551.kicad_mod",
      "model_3d": "xd551-hero.glb",
      "model_3d_plain": "xd551-etched.glb",
      "model_3d_step": "xd551-etched.step",
      "model_3d_step_plain": "xd551.step",
      "lbr": "xd551.lbr"
    },
    "distributor_links": {
      "lcsc": "C707092"
    },
    "distributor_check": {
      "checked_at": "2026-10-14T22:39:14Z",
      "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 reference for the timer; a low-impedance path is provided between DISCH and GND whenever the output is low."
      },
      {
        "number": "2",
        "name": "TRIG",
        "type": "input",
        "description": "Start-of-timing input; when TRIG is below 1/2 CONT the output is set high and the discharge is open."
      },
      {
        "number": "3",
        "name": "OUT",
        "type": "output",
        "description": "High-current timer output signal, rated to sink 100 mA (max) and source 10 mA (typ)."
      },
      {
        "number": "4",
        "name": "RESET",
        "type": "input",
        "description": "Active-low reset input that forces the output and discharge low and can override all other inputs."
      },
      {
        "number": "5",
        "name": "CONT",
        "type": "input",
        "description": "Controls the comparator thresholds, setting them at 2/3 VDD, and allows a bypass capacitor connection."
      },
      {
        "number": "6",
        "name": "THRES",
        "type": "input",
        "description": "End-of-timing input; when THRES is above CONT the output is set low and the discharge is low."
      },
      {
        "number": "7",
        "name": "DISCH",
        "type": "output",
        "description": "Open-collector output used to discharge the timing capacitor."
      },
      {
        "number": "8",
        "name": "VDD",
        "type": "power_in",
        "description": "Power-supply voltage input; the recommended supply range is 2 V to 15 V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The DIP8 pin table is on page 2 and is the only pinout source. Its header reads 'XD551 / XL555' and "
        ],
        "pages_sent": 12,
        "cost_usd": 0.0373,
        "at": "2026-10-14T22:38:59"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588892970732949504",
        "pages": 12,
        "sha256": "8c2a047422caeea7",
        "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": "xd551.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          9.27,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "4a377a56a8d9e9c0b86c095ef9ecc1869ac19e7f5069a3247b294250bf4f235d",
        "checked": "2026-10-14",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "xd551-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          9.27,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "0fb35360523e1187bcc9ca6b558c5f6a8336a23fa1cdd4afed099adbf299a473",
        "checked": "2026-10-14",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}