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Ray Set visibility: public fb7ab91 13d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "ht7555cnz",
  "title": "HT7555CNZ",
  "brief": "HTCSEMI Timers / Counters, DIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "clock-timing",
    "ht7555cnz",
    "factory-2.0.0",
    "extractor-text"
  ],
  "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": {
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        "pages": 10,
        "sha256": "90e64792df0537cc",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
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        "sha256": "4a377a56a8d9e9c0b86c095ef9ecc1869ac19e7f5069a3247b294250bf4f235d",
        "checked": "2026-10-15",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ht7555cnz-etched.step",
        "role": "eda",
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        "sha256": "09ed6a12821a07c5ba0813feed8f3a52aecfdf5cedad0d699ab0448992d5e09f",
        "checked": "2026-10-15",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  "metadata": {
    "specs": {
      "Manufacturer": "HTCSEMI",
      "Package": "DIP-8",
      "Category": "Clock/Timing",
      "Pins": "8"
    },
    "characteristics": {
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          "source_page": 2,
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          "name": "Monostable Timing (printed time values)",
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          "conditions": "RA = RB = 10k, C = 0.1µF, VDD = 5V",
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          "name": "Astable Timing (printed time values)",
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          "kind": "electrical",
          "unit": "µs",
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          "typ": null,
          "max": 2323,
          "conditions": "RA = RB = 10k, C = 0.1µF, VDD = 5V, TA = +25°C",
          "source_page": 2,
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        {
          "name": "Drift with Supply (monostable)",
          "symbol": "",
          "kind": "voltage_coefficient",
          "unit": "%/V",
          "min": null,
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        {
          "name": "Threshold Voltage",
          "symbol": "VTH",
          "kind": "electrical",
          "unit": "% VDD",
          "min": 62,
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          "max": 71,
          "conditions": "VDD = 15V, TA = +25°C",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Trigger Voltage",
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          "kind": "electrical",
          "unit": "% VDD",
          "min": 28,
          "typ": 32,
          "max": 36,
          "conditions": "VDD = 15V, TA = +25°C",
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          "name": "Control Voltage",
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          "name": "Reset Voltage",
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          "min": 0.4,
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          "source_page": 3,
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        {
          "name": "Trigger Current",
          "symbol": "ITRIG",
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          "conditions": "VDD = 15V",
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        {
          "name": "Output Voltage Low",
          "symbol": "VOL",
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          "max": 1,
          "conditions": "VDD = 15V, ISINK = 20mA, TA = +25°C",
          "source_page": 3,
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        {
          "name": "Output Voltage Low",
          "symbol": "VOL",
          "kind": "electrical",
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          "min": null,
          "typ": 0.2,
          "max": 0.4,
          "conditions": "VDD = 5V, ISINK = 3.2mA, TA = +25°C",
          "source_page": 3,
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        },
        {
          "name": "Output Voltage High",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 14.3,
          "typ": 14.6,
          "max": null,
          "conditions": "VDD = 15V, ISOURCE = 0.8mA, TA = +25°C",
          "source_page": 3,
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          "name": "Output Voltage High",
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          "min": 4,
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        {
          "name": "Discharge Output Voltage",
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          "source_page": 3,
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        {
          "name": "Drift with Temperature (monostable)",
          "symbol": "",
          "kind": "temperature_coefficient",
          "unit": "ppm/°C",
          "min": null,
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          "conditions": "VDD = 5V, RA = 470Ω, RB = 270Ω, C = 200pF",
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        {
          "name": "Thermal Resistance Junction-to-Case (8 Ld PDIP)",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 69,
          "max": null,
          "conditions": "Typical; case temp at package top center",
          "source_page": 2,
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    "name": "Ray",
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