74FCT621ATSOG

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  "slug": "74fct621atsog",
  "title": "74FCT621ATSOG",
  "brief": "RENESAS Buffers / Drivers, SOIC-20-300mil. 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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    "logic ics",
    "74fct621atsog",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "74FCT621ATSOG",
    "manufacturer": "RENESAS",
    "package": "SOIC-20-300mil",
    "pin_count": 20,
    "category": "Logic ICs",
    "subcategory": "Buffers / Drivers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/5eb1bb0ffe1b2522b201307413703583.pdf",
    "parts": {
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      "lbr": "74fct621atsog.lbr"
    },
    "distributor_links": {
      "lcsc": "C1548804",
      "digikey": "800-2621-5-ND",
      "mouser": "972-74FCT621ATSOG"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T16:42:32Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "800-2621-5-ND",
        "status": "found",
        "lifecycle": "Active"
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      "mouser": {
        "pn": "972-74FCT621ATSOG",
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    },
    "pins": [
      {
        "number": "1",
        "name": "GAB",
        "type": "input",
        "description": "Enable input that, with GBA, sets direction; per the function table GAB high passes A data to the B bus."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "bidirectional",
        "description": "A-bus input or open-drain output, sinks up to 48mA (VOL 0.5V max)."
      },
      {
        "number": "3",
        "name": "A2",
        "type": "bidirectional",
        "description": "A-bus input or open-drain output, sinks up to 48mA (VOL 0.5V max)."
      },
      {
        "number": "4",
        "name": "A3",
        "type": "bidirectional",
        "description": "A-bus input or open-drain output, sinks up to 48mA (VOL 0.5V max)."
      },
      {
        "number": "5",
        "name": "A4",
        "type": "bidirectional",
        "description": "A-bus input or open-drain output, sinks up to 48mA (VOL 0.5V max)."
      },
      {
        "number": "6",
        "name": "A5",
        "type": "bidirectional",
        "description": "A-bus input or open-drain output, sinks up to 48mA (VOL 0.5V max)."
      },
      {
        "number": "7",
        "name": "A6",
        "type": "bidirectional",
        "description": "A-bus input or open-drain output, sinks up to 48mA (VOL 0.5V max)."
      },
      {
        "number": "8",
        "name": "A7",
        "type": "bidirectional",
        "description": "A-bus input or open-drain output, sinks up to 48mA (VOL 0.5V max)."
      },
      {
        "number": "9",
        "name": "A8",
        "type": "bidirectional",
        "description": "A-bus input or open-drain output, sinks up to 48mA (VOL 0.5V max)."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (0V)."
      },
      {
        "number": "11",
        "name": "B8",
        "type": "bidirectional",
        "description": "B-bus input or open-drain output, sinks up to 64mA (VOL 0.55V max)."
      },
      {
        "number": "12",
        "name": "B7",
        "type": "bidirectional",
        "description": "B-bus input or open-drain output, sinks up to 64mA (VOL 0.55V max)."
      },
      {
        "number": "13",
        "name": "B6",
        "type": "bidirectional",
        "description": "B-bus input or open-drain output, sinks up to 64mA (VOL 0.55V max)."
      },
      {
        "number": "14",
        "name": "B5",
        "type": "bidirectional",
        "description": "B-bus input or open-drain output, sinks up to 64mA (VOL 0.55V max)."
      },
      {
        "number": "15",
        "name": "B4",
        "type": "bidirectional",
        "description": "B-bus input or open-drain output, sinks up to 64mA (VOL 0.55V max)."
      },
      {
        "number": "16",
        "name": "B3",
        "type": "bidirectional",
        "description": "B-bus input or open-drain output, sinks up to 64mA (VOL 0.55V max)."
      },
      {
        "number": "17",
        "name": "B2",
        "type": "bidirectional",
        "description": "B-bus input or open-drain output, sinks up to 64mA (VOL 0.55V max)."
      },
      {
        "number": "18",
        "name": "B1",
        "type": "bidirectional",
        "description": "B-bus input or open-drain output, sinks up to 64mA (VOL 0.55V max)."
      },
      {
        "number": "19",
        "name": "GBA",
        "type": "input",
        "description": "Enable input that, with GAB, sets direction; per the function table GBA low passes B data to the A bus."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply, 5.0V ±5% over the industrial range (-40°C to +85°C)."
      }
    ],
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The text extraction of the SOIC TOP VIEW pin diagram is scrambled: pin numbers and pin names are lis; Pin 20 (VCC) is sourced from the DC characteristics on page 3 for the 5.0V ±5% condition, and the pi; Pin types for A and B pins are classed as bidirectional because the datasheet describes them as inpu"
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        "described": 20,
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      "Manufacturer": "RENESAS",
      "Package": "SOIC-20-300mil",
      "Category": "Logic ICs",
      "Pins": "20"
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          "name": "Input capacitance",
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        {
          "name": "Input HIGH current",
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        {
          "name": "Input LOW current",
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          "typ": null,
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          "conditions": "VCC = Max., VI = 0.5V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input current",
          "symbol": "II",
          "kind": "electrical",
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          "typ": null,
          "max": 1,
          "conditions": "VCC = Max., VI = VCC (Max.)",
          "source_page": 3,
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        {
          "name": "Clamp diode voltage",
          "symbol": "VIK",
          "kind": "electrical",
          "unit": "V",
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          "max": -1.2,
          "conditions": "VCC = Min., IIN = -18mA",
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          "name": "Output HIGH current",
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          "unit": "µA",
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          "source_page": 3,
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        },
        {
          "name": "Output LOW voltage (B bus)",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
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          "max": 0.55,
          "conditions": "VCC = Min., IOL = 64mA, VIN = VIH or VIL",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Output LOW voltage (A bus)",
          "symbol": "VOL",
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          "unit": "V",
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          "typ": 0.3,
          "max": 0.5,
          "conditions": "VCC = Min., IOL = 48mA, VIN = VIH or VIL",
          "source_page": 3,
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        {
          "name": "Input/output power off leakage",
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          "name": "Input hysteresis",
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          "name": "Quiescent power supply current",
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          "source_page": 3,
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          "name": "Quiescent power supply current, TTL inputs HIGH",
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          "name": "Dynamic power supply current",
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          "unit": "mA/MHz",
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          "max": 0.25,
          "conditions": "VCC = Max., VIN = VCC, VIN = GND, outputs open, GBA = GAB = GND or VCC, one input toggling, 50% duty cycle",
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          "source": "datasheet"
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          "name": "Total power supply current",
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          "conditions": "VCC = Max., VIN = VCC, VIN = GND, outputs open, GBA = GAB = GND or VCC, one bit toggling",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Total power supply current",
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          "max": 4.5,
          "conditions": "VCC = Max., VIN = 3.4V, VIN = GND, outputs open, one bit toggling at fi = 10MHz, 50% duty cycle",
          "source_page": 4,
          "source": "datasheet"
        },
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          "name": "Total power supply current",
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          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 36,
          "conditions": "VCC = Max., VIN = VCC, VIN = GND, outputs open, GBA = GAB = GND or VCC, eight bits toggling at fi = 2.5MHz, 50% duty cycle; example of ICC formula, not tested",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Total power supply current",
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          "max": 14,
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          "source_page": 4,
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        {
          "name": "Propagation delay A to B (tPLH)",
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          "kind": "timing",
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          "typ": null,
          "max": 12,
          "conditions": "AT grade; CL = 50pF, RL = 500Ω; min guaranteed not tested",
          "source_page": 4,
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          "name": "Propagation delay A to B (tPHL)",
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          "typ": null,
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          "source_page": 4,
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          "typ": null,
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          "name": "Propagation delay GBA to A (tPLH)",
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          "name": "Supply voltage tolerance",
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          "unit": "%",
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          "source": "datasheet"
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