MC74HC390ADTR2G

{
  "slug": "mc74hc390adtr2g",
  "version": "0.1.0",
  "type": "component",
  "description": "onsemi Counters, Dividers, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "mc74hc390adtr2g",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "mc74hc390adtr2g.kicad_sym",
    "mc74hc390adtr2g.kicad_mod",
    "mc74hc390adtr2g.glb",
    "mc74hc390adtr2g.step",
    "mc74hc390adtr2g.lbr",
    "docs/hero.png",
    "docs/mc74hc390adtr2g-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "mc74hc390adtr2g-hero.glb",
    "mc74hc390adtr2g-hero.overlay.json",
    "mc74hc390adtr2g-etched.glb"
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  "component": {
    "mpn": "MC74HC390ADTR2G",
    "manufacturer": "onsemi",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Counters, Dividers",
    "datasheet": "https://www.onsemi.com/pdf/datasheet/mc74hc390adtr2-d.pdf",
    "parts": {
      "symbol": "mc74hc390adtr2g.kicad_sym",
      "footprint": "mc74hc390adtr2g.kicad_mod",
      "model_3d": "mc74hc390adtr2g-hero.glb",
      "model_3d_plain": "mc74hc390adtr2g-etched.glb",
      "model_3d_step": "mc74hc390adtr2g-etched.step",
      "model_3d_step_plain": "mc74hc390adtr2g.step",
      "lbr": "mc74hc390adtr2g.lbr"
    },
    "distributor_links": {
      "lcsc": "C904048",
      "digikey": "MC74HC390ADTR2GOSTR-ND",
      "mouser": "863-MC74HC390ADTR2G"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T19:04:57Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "MC74HC390ADTR2GOSTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "863-MC74HC390ADTR2G",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "CLOCK Aa",
        "type": "input",
        "description": "Clock A input to the ÷2 counter of counter a; internal flip-flops toggle on high-to-low transitions of this input, with a minimum pulse width of 75 ns at VCC = 2.0 V."
      },
      {
        "number": "2",
        "name": "RESET a",
        "type": "input",
        "description": "Asynchronous reset for counter a; a high level prevents counting, resets the internal flip-flops and forces QAa through QDa low."
      },
      {
        "number": "3",
        "name": "QAa",
        "type": "output",
        "description": "Output of the ÷2 counter in counter a; QA is the least significant bit when connected for BCD output."
      },
      {
        "number": "4",
        "name": "CLOCK Ba",
        "type": "input",
        "description": "Clock B input to the ÷5 counter in counter a; internal flip-flops toggle on high-to-low transitions of the clock input."
      },
      {
        "number": "5",
        "name": "QBa",
        "type": "output",
        "description": "Output of the ÷5 counter in counter a; QB is the least significant bit when operating in bi-quinary mode."
      },
      {
        "number": "6",
        "name": "QCa",
        "type": "output",
        "description": "Output of the ÷5 counter in counter a."
      },
      {
        "number": "7",
        "name": "QDa",
        "type": "output",
        "description": "Output of the ÷5 counter in counter a; QD is the most significant bit."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground; all voltages are referenced to GND, and Vin and Vout must stay within GND to VCC."
      },
      {
        "number": "9",
        "name": "QDb",
        "type": "output",
        "description": "Output of the ÷5 counter in counter b; QD is the most significant bit."
      },
      {
        "number": "10",
        "name": "QCb",
        "type": "output",
        "description": "Output of the ÷5 counter in counter b."
      },
      {
        "number": "11",
        "name": "QBb",
        "type": "output",
        "description": "Output of the ÷5 counter in counter b; QB is the least significant bit when operating in bi-quinary mode."
      },
      {
        "number": "12",
        "name": "CLOCK Bb",
        "type": "input",
        "description": "Clock B input to the ÷5 counter in counter b; internal flip-flops toggle on high-to-low transitions of the clock input."
      },
      {
        "number": "13",
        "name": "QAb",
        "type": "output",
        "description": "Output of the ÷2 counter in counter b; QA is the least significant bit when connected for BCD output."
      },
      {
        "number": "14",
        "name": "RESET b",
        "type": "input",
        "description": "Asynchronous reset for counter b; a high level prevents counting, resets the internal flip-flops and forces QAb through QDb low."
      },
      {
        "number": "15",
        "name": "CLOCK Ab",
        "type": "input",
        "description": "Clock A input to the ÷2 counter of counter b; internal flip-flops toggle on high-to-low transitions of this input."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply; recommended DC supply voltage is 2.0 V to 6.0 V referenced to GND."
      }
    ],
    "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 PIN ASSIGNMENT block on page 1 is garbled in the text extraction (numbers and labels are not ali; Page 4 pin description text lists 'Clock B (Pins 4, 15)', which conflicts with the logic diagram and; The datasheet covers SOIC-16 and TSSOP-16 with one shared pin assignment. Ordering code MC74HC390ADT",
          "8/16 pins cited to the wrong page (name found elsewhere): ['3:QAa@p4', '5:QBa@p4', '6:QCa@p4', '7:QDa@p4']"
        ],
        "pages_sent": 9,
        "cost_usd": 0.076,
        "at": "2026-10-21T19:00:08"
      },
      "datasheet": {
        "url": "https://www.onsemi.com/pdf/datasheet/mc74hc390adtr2-d.pdf",
        "pages": 9,
        "sha256": "81e186d6924ad7e5",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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      "footprint": "viewers/footprint.html"
    },
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5.0,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "6ad5e98224d02a427d9a6b929a28dbc158b9925fba5adec12db05079f1016948",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mc74hc390adtr2g-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": -0.0,
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        "footprint_binding": "identity",
        "sha256": "e63e15ea897078d54d337921400861cfc9909a8ddc353c409ab10d146d0d6825",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  }
}