74AC244MTCX

{
  "slug": "74ac244mtcx",
  "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",
    "74ac244mtcx",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "74ac244mtcx.kicad_sym",
    "74ac244mtcx.kicad_mod",
    "74ac244mtcx.glb",
    "74ac244mtcx.step",
    "74ac244mtcx.lbr",
    "docs/hero.png",
    "docs/74ac244mtcx-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "74ac244mtcx-hero.glb",
    "74ac244mtcx-hero.overlay.json",
    "74ac244mtcx-etched.glb"
  ],
  "component": {
    "mpn": "74AC244MTCX",
    "manufacturer": "onsemi",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Buffers, Drivers, Receivers, Transceivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588930477974048768",
    "parts": {
      "symbol": "74ac244mtcx.kicad_sym",
      "footprint": "74ac244mtcx.kicad_mod",
      "model_3d": "74ac244mtcx-hero.glb",
      "model_3d_plain": "74ac244mtcx-etched.glb",
      "model_3d_step": "74ac244mtcx-etched.step",
      "model_3d_step_plain": "74ac244mtcx.step",
      "lbr": "74ac244mtcx.lbr"
    },
    "distributor_links": {
      "lcsc": "C903333",
      "digikey": "74AC244MTCXTR-ND",
      "mouser": "512-74AC244MTCX"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T00:11:08Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "74AC244MTCXTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "512-74AC244MTCX",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "OE1",
        "type": "input",
        "description": "Active-low 3-STATE output enable input for the first buffer group, controlling outputs O0-O3 on pins 18, 16, 14, 12."
      },
      {
        "number": "2",
        "name": "I0",
        "type": "input",
        "description": "Data input I0, buffered to output O0 when OE1 is low."
      },
      {
        "number": "3",
        "name": "O4",
        "type": "tri_state",
        "description": "3-STATE output O4, enabled by OE2 and driven from I4, sources/sinks 24mA."
      },
      {
        "number": "4",
        "name": "I1",
        "type": "input",
        "description": "Data input I1, buffered to output O1 when OE1 is low."
      },
      {
        "number": "5",
        "name": "O5",
        "type": "tri_state",
        "description": "3-STATE output O5, enabled by OE2 and driven from I5, sources/sinks 24mA."
      },
      {
        "number": "6",
        "name": "I2",
        "type": "input",
        "description": "Data input I2, buffered to output O2 when OE1 is low."
      },
      {
        "number": "7",
        "name": "O6",
        "type": "tri_state",
        "description": "3-STATE output O6, enabled by OE2 and driven from I6, sources/sinks 24mA."
      },
      {
        "number": "8",
        "name": "I3",
        "type": "input",
        "description": "Data input I3, buffered to output O3 when OE1 is low."
      },
      {
        "number": "9",
        "name": "O7",
        "type": "tri_state",
        "description": "3-STATE output O7, enabled by OE2 and driven from I7, sources/sinks 24mA."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "11",
        "name": "I7",
        "type": "input",
        "description": "Data input I7, buffered to output O7 when OE2 is low."
      },
      {
        "number": "12",
        "name": "O3",
        "type": "tri_state",
        "description": "3-STATE output O3, enabled by OE1 and driven from I3, sources/sinks 24mA."
      },
      {
        "number": "13",
        "name": "I6",
        "type": "input",
        "description": "Data input I6, buffered to output O6 when OE2 is low."
      },
      {
        "number": "14",
        "name": "O2",
        "type": "tri_state",
        "description": "3-STATE output O2, enabled by OE1 and driven from I2, sources/sinks 24mA."
      },
      {
        "number": "15",
        "name": "I5",
        "type": "input",
        "description": "Data input I5, buffered to output O5 when OE2 is low."
      },
      {
        "number": "16",
        "name": "O1",
        "type": "tri_state",
        "description": "3-STATE output O1, enabled by OE1 and driven from I1, sources/sinks 24mA."
      },
      {
        "number": "17",
        "name": "I4",
        "type": "input",
        "description": "Data input I4, buffered to output O4 when OE2 is low."
      },
      {
        "number": "18",
        "name": "O0",
        "type": "tri_state",
        "description": "3-STATE output O0, enabled by OE1 and driven from I0, sources/sinks 24mA."
      },
      {
        "number": "19",
        "name": "OE2",
        "type": "input",
        "description": "Active-low 3-STATE output enable input for the second buffer group, controlling outputs O4-O7 on pins 3, 5, 7, 9."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply voltage pin."
      }
    ],
    "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": "vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pinout taken from the single connection diagram for the 20-lead package (shared by all package types",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 12,
        "cost_usd": 0.2729,
        "at": "2026-10-21T00:05:34"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588930477974048768",
        "pages": 14,
        "sha256": "2e2a222a0cf8049a",
        "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": "74ac244mtcx.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": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74ac244mtcx-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": "edafc38a64acd80fa3e4970be8545bfd8e16f76d00c3bbce1193ee627f740c25",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}