MC74ACT373DTR2G

{
  "schema_version": 1,
  "type": "component",
  "slug": "mc74act373dtr2g",
  "title": "MC74ACT373DTR2G",
  "brief": "onsemi Latches, TSSOP-20. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "logic",
    "mc74act373dtr2g"
  ],
  "component": {
    "mpn": "MC74ACT373DTR2G",
    "manufacturer": "onsemi",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Latches",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588929129677008896",
    "parts": {
      "symbol": "mc74act373dtr2g.kicad_sym",
      "footprint": "mc74act373dtr2g.kicad_mod",
      "model_3d": "mc74act373dtr2g-etched.glb",
      "model_3d_plain": "mc74act373dtr2g.glb",
      "model_3d_step": "mc74act373dtr2g-etched.step",
      "model_3d_step_plain": "mc74act373dtr2g.step",
      "lbr": "mc74act373dtr2g.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "OE",
        "type": "input",
        "description": "Output Enable, active-LOW. When LOW the O0-O7 latch outputs are driven; when HIGH the outputs are placed in the high-impedance 3-state condition."
      },
      {
        "number": "2",
        "name": "O0",
        "type": "tri_state",
        "description": "3-state latch output bit 0. Reflects D0 while LE is HIGH (transparent) and holds the last latched value when LE goes LOW. Source/sink 24 mA."
      },
      {
        "number": "3",
        "name": "D0",
        "type": "input",
        "description": "Data input bit 0. Latched into the corresponding flip-flop on the HIGH-to-LOW transition of LE (TTL-compatible input on ACT373)."
      },
      {
        "number": "4",
        "name": "D1",
        "type": "input",
        "description": "Data input bit 1. Latched into the corresponding flip-flop on the HIGH-to-LOW transition of LE."
      },
      {
        "number": "5",
        "name": "O1",
        "type": "tri_state",
        "description": "3-state latch output bit 1. Follows D1 while LE is HIGH; holds when LE is LOW; high-Z when OE is HIGH."
      },
      {
        "number": "6",
        "name": "O2",
        "type": "tri_state",
        "description": "3-state latch output bit 2. Follows D2 while LE is HIGH; holds when LE is LOW; high-Z when OE is HIGH."
      },
      {
        "number": "7",
        "name": "D2",
        "type": "input",
        "description": "Data input bit 2. Latched on the HIGH-to-LOW transition of LE."
      },
      {
        "number": "8",
        "name": "D3",
        "type": "input",
        "description": "Data input bit 3. Latched on the HIGH-to-LOW transition of LE."
      },
      {
        "number": "9",
        "name": "O3",
        "type": "tri_state",
        "description": "3-state latch output bit 3. Follows D3 while LE is HIGH; holds when LE is LOW; high-Z when OE is HIGH."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (0 V) for the device. Connect directly to the system ground plane."
      },
      {
        "number": "11",
        "name": "LE",
        "type": "input",
        "description": "Latch Enable. When HIGH the latches are transparent (Q follows D); on the HIGH-to-LOW edge the current D0-D7 values are stored and held while LE remains LOW."
      },
      {
        "number": "12",
        "name": "O4",
        "type": "tri_state",
        "description": "3-state latch output bit 4. Follows D4 while LE is HIGH; holds when LE is LOW; high-Z when OE is HIGH."
      },
      {
        "number": "13",
        "name": "D4",
        "type": "input",
        "description": "Data input bit 4. Latched on the HIGH-to-LOW transition of LE."
      },
      {
        "number": "14",
        "name": "D5",
        "type": "input",
        "description": "Data input bit 5. Latched on the HIGH-to-LOW transition of LE."
      },
      {
        "number": "15",
        "name": "O5",
        "type": "tri_state",
        "description": "3-state latch output bit 5. Follows D5 while LE is HIGH; holds when LE is LOW; high-Z when OE is HIGH."
      },
      {
        "number": "16",
        "name": "O6",
        "type": "tri_state",
        "description": "3-state latch output bit 6. Follows D6 while LE is HIGH; holds when LE is LOW; high-Z when OE is HIGH."
      },
      {
        "number": "17",
        "name": "D6",
        "type": "input",
        "description": "Data input bit 6. Latched on the HIGH-to-LOW transition of LE."
      },
      {
        "number": "18",
        "name": "D7",
        "type": "input",
        "description": "Data input bit 7. Latched on the HIGH-to-LOW transition of LE."
      },
      {
        "number": "19",
        "name": "O7",
        "type": "tri_state",
        "description": "3-state latch output bit 7. Follows D7 while LE is HIGH; holds when LE is LOW; high-Z when OE is HIGH."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply pin. ACT373 operates at 4.5-5.5 V (5 V nominal TTL-compatible operation). Decouple locally with a 0.1 uF capacitor to GND."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588929129677008896",
        "pages": null,
        "sha256": "fe8a9d1ee563cf0a",
        "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"
    },
    "logic": {
      "family_id": "74ACT373",
      "logic_family": "74ACT",
      "function_code": "373",
      "function_class": "Latch",
      "function_name": "Octal D Latch with 3-State Outputs",
      "manufacturer": "Onsemi (Motorola legacy)",
      "is_specialty": false
    },
    "models_3d": [
      {
        "file": "mc74act373dtr2g.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": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mc74act373dtr2g-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": "1bebefa920e994aabb589ad96552f45771abd9055aeca571fb423095c3b5fa6a",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "TSSOP-20",
      "Category": "Logic",
      "Pins": "20"
    }
  },
  "variants": [
    {
      "mpn": "MC74ACT373DTR2G",
      "kind": "packaging"
    },
    {
      "mpn": "MC74ACT373DTR2GDTG",
      "kind": "packaging"
    },
    {
      "mpn": "MC74ACT373DTR2GDWR2G",
      "kind": "packaging"
    },
    {
      "mpn": "MC74ACT373DTR2GDWG",
      "kind": "packaging"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "mc74act373dtr2g"
  ],
  "discovery_pitch": "MC74ACT373DTR2G (onsemi) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "mc74act373dtr2g.kicad_sym",
    "mc74act373dtr2g.kicad_mod",
    "mc74act373dtr2g.glb",
    "mc74act373dtr2g.step",
    "mc74act373dtr2g.lbr",
    "docs/hero.png",
    "docs/mc74act373dtr2g-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-28T18:51:07.534Z"
}