74VHCT244AMTCX

{
  "slug": "74vhct244amtcx",
  "version": "0.1.0",
  "type": "component",
  "description": "onsemi Buffers, Drivers, Receivers, Transceivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "74vhct244amtcx",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "74vhct244amtcx.kicad_sym",
    "74vhct244amtcx.kicad_mod",
    "74vhct244amtcx.glb",
    "74vhct244amtcx.step",
    "74vhct244amtcx.lbr",
    "docs/hero.png",
    "docs/74vhct244amtcx-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "74vhct244amtcx-hero.glb",
    "74vhct244amtcx-hero.overlay.json",
    "74vhct244amtcx-etched.glb"
  ],
  "component": {
    "mpn": "74VHCT244AMTCX",
    "manufacturer": "onsemi",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Buffers, Drivers, Receivers, Transceivers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/7c7bd163ad184a919b0f061d8b074139.pdf",
    "parts": {
      "symbol": "74vhct244amtcx.kicad_sym",
      "footprint": "74vhct244amtcx.kicad_mod",
      "model_3d": "74vhct244amtcx-hero.glb",
      "model_3d_plain": "74vhct244amtcx-etched.glb",
      "model_3d_step": "74vhct244amtcx-etched.step",
      "model_3d_step_plain": "74vhct244amtcx.step",
      "lbr": "74vhct244amtcx.lbr"
    },
    "distributor_links": {
      "lcsc": "C6154",
      "digikey": "74VHCT244AMTCXTR-ND",
      "mouser": "512-74VHCT244AMTCX"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T06:31:35Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "74VHCT244AMTCXTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "512-74VHCT244AMTCX",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "OE1",
        "type": "input",
        "description": "Active-LOW 3-STATE output enable for outputs O0-O3 (pins 18, 16, 14, 12); HIGH puts them in high impedance."
      },
      {
        "number": "2",
        "name": "I0",
        "type": "input",
        "description": "Data input 0, buffered non-inverting to O0 (pin 18)."
      },
      {
        "number": "3",
        "name": "O4",
        "type": "tri_state",
        "description": "3-STATE output 4, follows I4 (pin 17) when OE2 is LOW and is high impedance when OE2 is HIGH."
      },
      {
        "number": "4",
        "name": "I1",
        "type": "input",
        "description": "Data input 1, buffered non-inverting to O1 (pin 16)."
      },
      {
        "number": "5",
        "name": "O5",
        "type": "tri_state",
        "description": "3-STATE output 5, follows I5 (pin 15) when OE2 is LOW and is high impedance when OE2 is HIGH."
      },
      {
        "number": "6",
        "name": "I2",
        "type": "input",
        "description": "Data input 2, buffered non-inverting to O2 (pin 14)."
      },
      {
        "number": "7",
        "name": "O6",
        "type": "tri_state",
        "description": "3-STATE output 6, follows I6 (pin 13) when OE2 is LOW and is high impedance when OE2 is HIGH."
      },
      {
        "number": "8",
        "name": "I3",
        "type": "input",
        "description": "Data input 3, buffered non-inverting to O3 (pin 12)."
      },
      {
        "number": "9",
        "name": "O7",
        "type": "tri_state",
        "description": "3-STATE output 7, follows I7 (pin 11) when OE2 is LOW and is high impedance when OE2 is HIGH."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground, 0 V reference."
      },
      {
        "number": "11",
        "name": "I7",
        "type": "input",
        "description": "Data input 7, buffered non-inverting to O7 (pin 9)."
      },
      {
        "number": "12",
        "name": "O3",
        "type": "tri_state",
        "description": "3-STATE output 3, follows I3 (pin 8) when OE1 is LOW and is high impedance when OE1 is HIGH."
      },
      {
        "number": "13",
        "name": "I6",
        "type": "input",
        "description": "Data input 6, buffered non-inverting to O6 (pin 7)."
      },
      {
        "number": "14",
        "name": "O2",
        "type": "tri_state",
        "description": "3-STATE output 2, follows I2 (pin 6) when OE1 is LOW and is high impedance when OE1 is HIGH."
      },
      {
        "number": "15",
        "name": "I5",
        "type": "input",
        "description": "Data input 5, buffered non-inverting to O5 (pin 5)."
      },
      {
        "number": "16",
        "name": "O1",
        "type": "tri_state",
        "description": "3-STATE output 1, follows I1 (pin 4) when OE1 is LOW and is high impedance when OE1 is HIGH."
      },
      {
        "number": "17",
        "name": "I4",
        "type": "input",
        "description": "Data input 4, buffered non-inverting to O4 (pin 3)."
      },
      {
        "number": "18",
        "name": "O0",
        "type": "tri_state",
        "description": "3-STATE output 0, follows I0 (pin 2) when OE1 is LOW and is high impedance when OE1 is HIGH."
      },
      {
        "number": "19",
        "name": "OE2",
        "type": "input",
        "description": "Active-LOW 3-STATE output enable for outputs O4-O7 (pins 3, 5, 7, 9); HIGH puts them in high impedance."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply, recommended 4.5 V to 5.5 V (absolute maximum 7.0 V)."
      }
    ],
    "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 shows one connection diagram for all 20-lead packages, and the TSSOP (MTC20) is assume",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 8,
        "cost_usd": 0.24,
        "at": "2026-10-18T06:29:05"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/7c7bd163ad184a919b0f061d8b074139.pdf",
        "pages": 8,
        "sha256": "0e73030ec6993e5b",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "74vhct244amtcx.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          6.5,
          1.2
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74vhct244amtcx-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          6.5,
          1.2
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "b5476dacf6fe81be8e264224ee7c5abe68d3f75e466858baa69e3ec368fb0454",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}