XD7555

{
  "slug": "xd7555",
  "version": "0.1.0",
  "type": "component",
  "description": "XINLUDA Timers / Clock Oscillators, DIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "clock and timing",
    "xd7555",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "xd7555.kicad_sym",
    "xd7555.kicad_mod",
    "xd7555.glb",
    "xd7555.step",
    "xd7555.lbr",
    "docs/hero.png",
    "docs/xd7555-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "xd7555-hero.glb",
    "xd7555-hero.overlay.json",
    "xd7555-etched.glb"
  ],
  "component": {
    "mpn": "XD7555",
    "manufacturer": "XINLUDA",
    "package": "DIP-8",
    "pin_count": 8,
    "category": "Clock and Timing",
    "subcategory": "Timers / Clock Oscillators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/0ee7cbc1ec64456f64b95236a3d0232e.pdf",
    "parts": {
      "symbol": "xd7555.kicad_sym",
      "footprint": "xd7555.kicad_mod",
      "model_3d": "xd7555-hero.glb",
      "model_3d_plain": "xd7555-etched.glb",
      "model_3d_step": "xd7555-etched.step",
      "model_3d_step_plain": "xd7555.step",
      "lbr": "xd7555.lbr"
    },
    "distributor_links": {
      "lcsc": "C521188"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T23:15:03Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 579 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground; reference for all inputs, which must stay no lower than GND -0.3V."
      },
      {
        "number": "2",
        "name": "TRIGGER",
        "type": "input",
        "description": "Active-low trigger input that sets the flip-flop when below 1/3 V+ (trigger voltage 28-36% VDD at 15V), dominates over THRESHOLD, and must stay within V+ +0.3V to GND -0.3V."
      },
      {
        "number": "3",
        "name": "OUTPUT",
        "type": "output",
        "description": "CMOS inverter output that swings rail to rail, drives at least two standard TTL loads at 4.5V or more supply, with absolute maximum output current of 100mA."
      },
      {
        "number": "4",
        "name": "RESET",
        "type": "input",
        "description": "Active-low reset input with a trip voltage of 0.4V to 1.0V at 25°C (VDD 2V to 15V) that dominates all other inputs and forces output low and discharge switch on."
      },
      {
        "number": "5",
        "name": "CONTROL VOLTAGE",
        "type": "input",
        "description": "Control voltage input that sets the comparator trip points (about 2/3 V+, 62-71% VDD at 15V) for frequency or delay modulation, and needs no decoupling capacitor."
      },
      {
        "number": "6",
        "name": "THRESHOLD",
        "type": "input",
        "description": "Threshold comparator input that resets the flip-flop when above 2/3 V+ (62-71% VDD at 15V), with input current of 10nA max at 25°C."
      },
      {
        "number": "7",
        "name": "DISCHARGE",
        "type": "passive",
        "description": "Open discharge switch output that discharges the timing capacitor when the output is low, with 15mA sink at 0.4V max (VDD 5V) and leakage of 10nA max at 15V."
      },
      {
        "number": "8",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply with guaranteed range of 2V to 18V and an absolute maximum of +18V."
      }
    ],
    "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: DISCHARGE pin type chosen as passive (open-collector-style switch to GND); datasheet does not state ; The pin assignment was read from the top-view pin configuration on page 3, which is shared by the SO",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 14,
        "cost_usd": 0.3122,
        "at": "2026-10-22T23:14:52"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/0ee7cbc1ec64456f64b95236a3d0232e.pdf",
        "pages": 14,
        "sha256": "fe564827268b6ba8",
        "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": "xd7555.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": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "xd7555-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": "ce9069e66800f34b9eea4f2d956899a61f41a7ee79810e1b248461a6fee01b09",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}