HT556CRZ

{
  "schema_version": 1,
  "type": "component",
  "slug": "ht556crz",
  "title": "HT556CRZ",
  "brief": "HTCSEMI Timers / Counters, SOP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "clock-timing",
    "ht556crz",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "HT556CRZ",
    "manufacturer": "HTCSEMI",
    "package": "SOP-14",
    "pin_count": 14,
    "category": "Clock/Timing",
    "subcategory": "Timers / Counters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589837741900140544",
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      "lbr": "ht556crz.lbr"
    },
    "distributor_links": {
      "lcsc": "C2858919"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T14:27:57Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "DISCHARGE1",
        "type": "passive",
        "description": "Discharge output of timer 1, which discharges the external timing capacitor."
      },
      {
        "number": "2",
        "name": "THRESHOLD1",
        "type": "input",
        "description": "Threshold comparator input of timer 1, which resets the flip-flop at 2/3 V+."
      },
      {
        "number": "3",
        "name": "CONTROL VOLTAGE1",
        "type": "input",
        "description": "Control voltage input of timer 1, which sets the trip voltages of the threshold and trigger comparators and need not be decoupled."
      },
      {
        "number": "4",
        "name": "RESET1",
        "type": "input",
        "description": "Active-low reset input of timer 1, with a trip voltage of about 0.6V to 0.7V, which dominates all other inputs."
      },
      {
        "number": "5",
        "name": "OUTPUT1",
        "type": "output",
        "description": "Output of timer 1, a CMOS driver that can source or sink enough current to drive TTL and CMOS loads."
      },
      {
        "number": "6",
        "name": "TRIGGER1",
        "type": "input",
        "description": "Active-low trigger input of timer 1, which sets the flip-flop when it falls below 1/3 V+."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground, shared by both timers."
      },
      {
        "number": "8",
        "name": "TRIGGER2",
        "type": "input",
        "description": "Active-low trigger input of timer 2, which sets the flip-flop when it falls below 1/3 V+."
      },
      {
        "number": "9",
        "name": "OUTPUT2",
        "type": "output",
        "description": "Output of timer 2, a CMOS driver that can source or sink enough current to drive TTL and CMOS loads."
      },
      {
        "number": "10",
        "name": "RESET2",
        "type": "input",
        "description": "Active-low reset input of timer 2, with a trip voltage of about 0.6V to 0.7V, which dominates all other inputs."
      },
      {
        "number": "11",
        "name": "CONTROL VOLTAGE2",
        "type": "input",
        "description": "Control voltage input of timer 2, which sets the trip voltages of the threshold and trigger comparators and need not be decoupled."
      },
      {
        "number": "12",
        "name": "THRESHOLD2",
        "type": "input",
        "description": "Threshold comparator input of timer 2, which resets the flip-flop at 2/3 V+."
      },
      {
        "number": "13",
        "name": "DISCHARGE2",
        "type": "passive",
        "description": "Discharge output of timer 2, which discharges the external timing capacitor."
      },
      {
        "number": "14",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply, shared by both timers, guaranteed 2V to 18V with 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: The datasheet pin diagram is titled '14 LD PDIP, CERDIP'. A SOP14 drawing exists on page 9, but it h; The overbars that mark active-low pins are hard to read in the diagram. I took RESET and TRIGGER as ; The DISCHARGE pin types are not given in the datasheet. I classed them as passive, but they are open",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 9,
        "cost_usd": 0.2009,
        "at": "2026-10-18T14:27:43"
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        "checked": "2026-10-18",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "HTCSEMI",
      "Package": "SOP-14",
      "Category": "Clock/Timing",
      "Pins": "14"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
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          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
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          "typ": null,
          "max": 18,
          "conditions": "HT556C, functional operation, +25°C column",
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        },
        {
          "name": "Static Supply Current",
          "symbol": "IDD",
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          "max": 400,
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          "name": "Static Supply Current",
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        {
          "name": "Threshold Voltage",
          "symbol": "VTH",
          "kind": "electrical",
          "unit": "% VDD",
          "min": 62,
          "typ": 67,
          "max": 71,
          "conditions": "VDD = 15V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Trigger Voltage",
          "symbol": "VTRIG",
          "kind": "electrical",
          "unit": "% VDD",
          "min": 28,
          "typ": 32,
          "max": 36,
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          "name": "Trigger Current",
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        {
          "name": "Threshold Current",
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          "conditions": "VDD = 15V",
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        {
          "name": "Control Voltage",
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        {
          "name": "Reset Voltage",
          "symbol": "VRST",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.4,
          "max": 1,
          "conditions": "VDD = 2V to 15V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Reset Current",
          "symbol": "IRST",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": 10,
          "max": 50,
          "conditions": "VDD = 15V",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Discharge Leakage",
          "symbol": "IDIS",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
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          "max": 50,
          "conditions": "VDD = 15V",
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        },
        {
          "name": "Output Low Voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
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          "max": 1,
          "conditions": "VDD = 15V, ISINK = 20mA",
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        {
          "name": "Output Low Voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.2,
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          "conditions": "VDD = 5V, ISINK = 3.2mA",
          "source_page": 3,
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        },
        {
          "name": "Output High Voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 14.3,
          "typ": 14.6,
          "max": null,
          "conditions": "VDD = 15V, ISOURCE = 0.8mA",
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          "name": "Output High Voltage",
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          "kind": "electrical",
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          "min": 4,
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          "max": 0.4,
          "conditions": "VDD = 15V, ISINK = 15mA",
          "source_page": 3,
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        {
          "name": "Output Rise Time",
          "symbol": "tR",
          "kind": "timing",
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          "conditions": "RL = 10M, CL = 10pF, VDD = 5V",
          "source_page": 3,
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        {
          "name": "Output Fall Time",
          "symbol": "tF",
          "kind": "timing",
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          "max": 75,
          "conditions": "RL = 10M, CL = 10pF, VDD = 5V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Oscillator Frequency",
          "symbol": "fMAX",
          "kind": "timing",
          "unit": "MHz",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "VDD = 5V, RA = 470Ω, RB = 270Ω, C = 200pF",
          "source_page": 3,
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        },
        {
          "name": "Monostable Timing Accuracy",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": null,
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          "max": 2,
          "conditions": "RA = 10k, C = 0.1µF, VDD = 5V",
          "source_page": 2,
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        {
          "name": "Astable Timing Accuracy",
          "symbol": "",
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          "conditions": "RA = RB = 10k, C = 0.1µF, VDD = 5V",
          "source_page": 2,
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        {
          "name": "Supply Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 18,
          "conditions": "",
          "source_page": 2,
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        },
        {
          "name": "Output Current",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "",
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        },
        {
          "name": "Maximum Junction Temperature (Plastic Package)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "Plastic package",
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        },
        {
          "name": "Maximum Storage Temperature Range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
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        },
        {
          "name": "Drift with Temperature",
          "symbol": "",
          "kind": "temperature_coefficient",
          "unit": "ppm/°C",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "VDD = 5V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Drift with Temperature",
          "symbol": "",
          "kind": "temperature_coefficient",
          "unit": "ppm/°C",
          "min": null,
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          "max": null,
          "conditions": "VDD = 10V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Drift with Temperature",
          "symbol": "",
          "kind": "temperature_coefficient",
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          "min": null,
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          "conditions": "VDD = 15V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Drift with Supply",
          "symbol": "",
          "kind": "voltage_coefficient",
          "unit": "%/V",
          "min": null,
          "typ": 0.5,
          "max": null,
          "conditions": "VDD = 5V to 15V",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
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    "name": "Ray",
    "email": "[email protected]"
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