CD74HC573E

{
  "slug": "cd74hc573e",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Latches, PDIP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "cd74hc573e",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cd74hc573e.kicad_sym",
    "cd74hc573e.kicad_mod",
    "cd74hc573e.glb",
    "cd74hc573e.step",
    "cd74hc573e.lbr",
    "docs/hero.png",
    "docs/cd74hc573e-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cd74hc573e-hero.glb",
    "cd74hc573e-hero.overlay.json",
    "cd74hc573e-etched.glb"
  ],
  "component": {
    "mpn": "CD74HC573E",
    "manufacturer": "Texas Instruments",
    "package": "PDIP-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Latches",
    "datasheet": "https://www.ti.com/cn/lit/gpn/cd74hc573",
    "parts": {
      "symbol": "cd74hc573e.kicad_sym",
      "footprint": "cd74hc573e.kicad_mod",
      "model_3d": "cd74hc573e-hero.glb",
      "model_3d_plain": "cd74hc573e-etched.glb",
      "model_3d_step": "cd74hc573e-etched.step",
      "model_3d_step_plain": "cd74hc573e.step",
      "lbr": "cd74hc573e.lbr"
    },
    "distributor_links": {
      "lcsc": "C354058",
      "digikey": "2156-CD74HC573E-ND",
      "mouser": "595-CD74HC573E"
    },
    "distributor_check": {
      "checked_at": "2026-10-16T02:14:35Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2156-CD74HC573E-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-CD74HC573E",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "OE",
        "type": "input",
        "description": "Buffered output-enable input that places the eight Q outputs in a normal logic state when low or in the high-impedance state when high, without affecting the latches' internal operation."
      },
      {
        "number": "2",
        "name": "1D",
        "type": "input",
        "description": "Latch 1 data input; Q follows D while LE is high and holds the level when LE goes low."
      },
      {
        "number": "3",
        "name": "2D",
        "type": "input",
        "description": "Latch 2 data input; Q follows D while LE is high and holds the level when LE goes low."
      },
      {
        "number": "4",
        "name": "3D",
        "type": "input",
        "description": "Latch 3 data input; Q follows D while LE is high and holds the level when LE goes low."
      },
      {
        "number": "5",
        "name": "4D",
        "type": "input",
        "description": "Latch 4 data input; Q follows D while LE is high and holds the level when LE goes low."
      },
      {
        "number": "6",
        "name": "5D",
        "type": "input",
        "description": "Latch 5 data input; Q follows D while LE is high and holds the level when LE goes low."
      },
      {
        "number": "7",
        "name": "6D",
        "type": "input",
        "description": "Latch 6 data input; Q follows D while LE is high and holds the level when LE goes low."
      },
      {
        "number": "8",
        "name": "7D",
        "type": "input",
        "description": "Latch 7 data input; Q follows D while LE is high and holds the level when LE goes low."
      },
      {
        "number": "9",
        "name": "8D",
        "type": "input",
        "description": "Latch 8 data input; Q follows D while LE is high and holds the level when LE goes low."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "11",
        "name": "LE",
        "type": "input",
        "description": "Latch-enable input; Q outputs follow the D inputs when high and are latched at the D levels when low."
      },
      {
        "number": "12",
        "name": "8Q",
        "type": "tri_state",
        "description": "Latch 8 three-state output; high-impedance when OE is high."
      },
      {
        "number": "13",
        "name": "7Q",
        "type": "tri_state",
        "description": "Latch 7 three-state output; high-impedance when OE is high."
      },
      {
        "number": "14",
        "name": "6Q",
        "type": "tri_state",
        "description": "Latch 6 three-state output; high-impedance when OE is high."
      },
      {
        "number": "15",
        "name": "5Q",
        "type": "tri_state",
        "description": "Latch 5 three-state output; high-impedance when OE is high."
      },
      {
        "number": "16",
        "name": "4Q",
        "type": "tri_state",
        "description": "Latch 4 three-state output; high-impedance when OE is high."
      },
      {
        "number": "17",
        "name": "3Q",
        "type": "tri_state",
        "description": "Latch 3 three-state output; high-impedance when OE is high."
      },
      {
        "number": "18",
        "name": "2Q",
        "type": "tri_state",
        "description": "Latch 2 three-state output; high-impedance when OE is high."
      },
      {
        "number": "19",
        "name": "1Q",
        "type": "tri_state",
        "description": "Latch 1 three-state output; high-impedance when OE is high."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, 2 V to 6 V operation, with a 0.1-µF bypass capacitor recommended close to the pin."
      }
    ],
    "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 page 3 pin diagram is only available as scrambled text with no explicit pin-to-name table. The p; The datasheet gives no per-pin function table. Descriptions were built from the Overview, Function T; Input and output types are inferred from the function. OE and LE are active-high/active-low as descr"
        ],
        "pages_sent": 21,
        "cost_usd": 0.0752,
        "at": "2026-10-16T02:14:17"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/cd74hc573",
        "pages": 21,
        "sha256": "15e5cd2cfa3bdbe5",
        "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": "cd74hc573e.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          26.162,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "ca359c9b9e0ce94efcb6c96866513f659eef6517d629ace3c4a0a779f6fd57bb",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cd74hc573e-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
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          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "c8bd8ebc62b678080a12fe062dea3815e0eac775551ecee188b4260becc21767",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}