HT7555CNZ

{
  "slug": "ht7555cnz",
  "version": "0.1.0",
  "type": "component",
  "description": "HTCSEMI Timers / Counters, DIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "clock-timing",
    "ht7555cnz",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ht7555cnz.kicad_sym",
    "ht7555cnz.kicad_mod",
    "ht7555cnz.glb",
    "ht7555cnz.step",
    "ht7555cnz.lbr",
    "docs/hero.png",
    "docs/ht7555cnz-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ht7555cnz-hero.glb",
    "ht7555cnz-hero.overlay.json",
    "ht7555cnz-etched.glb"
  ],
  "component": {
    "mpn": "HT7555CNZ",
    "manufacturer": "HTCSEMI",
    "package": "DIP-8",
    "pin_count": 8,
    "category": "Clock/Timing",
    "subcategory": "Timers / Counters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590460561751375872",
    "parts": {
      "symbol": "ht7555cnz.kicad_sym",
      "footprint": "ht7555cnz.kicad_mod",
      "model_3d": "ht7555cnz-hero.glb",
      "model_3d_plain": "ht7555cnz-etched.glb",
      "model_3d_step": "ht7555cnz-etched.step",
      "model_3d_step_plain": "ht7555cnz.step",
      "lbr": "ht7555cnz.lbr"
    },
    "distributor_links": {
      "lcsc": "C5274684"
    },
    "distributor_check": {
      "checked_at": "2026-10-15T11:48:17Z",
      "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; input voltages must stay between GND -0.3V and V+ +0.3V, and the datasheet notes that exceeding these limits may cause destructive latch-up."
      },
      {
        "number": "2",
        "name": "TRIGGER",
        "type": "input",
        "description": "Negative-going trigger input that sets the internal flip-flop when it falls below 1/3 V+ (28 to 36% of VDD at 15V), with trigger current of 50 nA maximum at VDD = 15V."
      },
      {
        "number": "3",
        "name": "OUTPUT",
        "type": "output",
        "description": "Timer output from a CMOS inverter driver that can drive TTL or CMOS loads, with an absolute maximum output current of 100 mA."
      },
      {
        "number": "4",
        "name": "RESET",
        "type": "input",
        "description": "Active-low reset input that controls only the internal flip-flop and overrides all other inputs, with reset current of 50 nA maximum at VDD = 15V."
      },
      {
        "number": "5",
        "name": "CONTROL VOLTAGE",
        "type": "passive",
        "description": "Control voltage terminal that sets the threshold and trigger comparator trip points (about 67% of VDD at 15V) and does not require decoupling for stable operation."
      },
      {
        "number": "6",
        "name": "THRESHOLD",
        "type": "input",
        "description": "Threshold comparator input that resets the flip-flop when the voltage rises above 2/3 V+, with threshold current of 50 nA maximum at VDD = 15V."
      },
      {
        "number": "7",
        "name": "DISCHARGE",
        "type": "output",
        "description": "Discharge switch to GND that is on while the output is low, with discharge leakage of 50 nA maximum at VDD = 15V."
      },
      {
        "number": "8",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply pin with a guaranteed functional supply range of 2.0 V to 18.0 V and an absolute maximum of +18 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 datasheet does not map the MPN suffix 'NZ' to a package. The 8-pin pinout is taken from the HT75; The datasheet lists the 8-pin device as MSOP, PDIP and SOIC. The DIP-8 pinout is the same across the; Pin types for DISCHARGE (output) and CONTROL VOLTAGE (passive) are engineering judgments. The datash"
        ],
        "pages_sent": 10,
        "cost_usd": 0.0527,
        "at": "2026-10-15T11:48:04"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590460561751375872",
        "pages": 10,
        "sha256": "90e64792df0537cc",
        "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"
    },
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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          9.27,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "4a377a56a8d9e9c0b86c095ef9ecc1869ac19e7f5069a3247b294250bf4f235d",
        "checked": "2026-10-15",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ht7555cnz-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": [
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        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "09ed6a12821a07c5ba0813feed8f3a52aecfdf5cedad0d699ab0448992d5e09f",
        "checked": "2026-10-15",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}