XD7555

{
  "schema_version": 1,
  "type": "component",
  "slug": "xd7555",
  "title": "XD7555",
  "brief": "XINLUDA Timers / Clock Oscillators, 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": [
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    "clock and timing",
    "xd7555",
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  "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": {
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      "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"
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    },
    "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": {
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        "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"
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        "cost_usd": 0.3122,
        "at": "2026-10-22T23:14:52"
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        "described": 8,
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  "metadata": {
    "specs": {
      "Manufacturer": "XINLUDA",
      "Package": "DIP-8",
      "Category": "Clock and Timing",
      "Pins": "8"
    },
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          "name": "Thermal Resistance Junction-Ambient",
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          "name": "Static Supply Current",
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          "name": "Static Supply Current",
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        {
          "name": "Reset Voltage",
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          "name": "Reset Current",
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          "name": "Discharge Leakage",
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          "name": "Output Voltage High",
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          "conditions": "Functional Operation, TA=+25°C",
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          "max": 16,
          "conditions": "Functional Operation, -55°C to +125°C",
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          "symbol": "",
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          "unit": "%",
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          "max": null,
          "conditions": "RA = 10k, C = 0.1µF, VDD = 5V",
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          "name": "Astable Timing Accuracy",
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          "conditions": "RA = RB = 10k, C = 0.1µF, VDD = 5V",
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          "name": "Monostable Drift with Temperature",
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          "min": null,
          "typ": 150,
          "max": null,
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          "name": "Monostable Drift with Temperature",
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          "source_page": 4,
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          "name": "Monostable Drift with Temperature",
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          "min": null,
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          "max": null,
          "conditions": "VDD = 15V, -55°C to +125°C column",
          "source_page": 4,
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          "name": "Output Rise Time",
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          "min": null,
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          "max": null,
          "conditions": "RL = 10M, CL = 10pF, VDD = 5V",
          "source_page": 5,
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        {
          "name": "Output Fall Time",
          "symbol": "tF",
          "kind": "timing",
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          "max": null,
          "conditions": "RL = 10M, CL = 10pF, VDD = 5V",
          "source_page": 5,
          "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": 5,
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    "name": "Ray",
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