CD74HCT574PWR

{
  "slug": "cd74hct574pwr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Flip Flops, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "cd74hct574pwr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cd74hct574pwr.kicad_sym",
    "cd74hct574pwr.kicad_mod",
    "cd74hct574pwr.glb",
    "cd74hct574pwr.step",
    "cd74hct574pwr.lbr",
    "docs/hero.png",
    "docs/cd74hct574pwr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cd74hct574pwr-hero.glb",
    "cd74hct574pwr-hero.overlay.json"
  ],
  "component": {
    "mpn": "CD74HCT574PWR",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Flip Flops",
    "datasheet": "https://www.ti.com/lit/ds/symlink/cd74hct574.pdf",
    "parts": {
      "symbol": "cd74hct574pwr.kicad_sym",
      "footprint": "cd74hct574pwr.kicad_mod",
      "model_3d": "cd74hct574pwr-hero.glb",
      "model_3d_plain": "cd74hct574pwr.glb",
      "model_3d_step": "cd74hct574pwr-etched.step",
      "model_3d_step_plain": "cd74hct574pwr.step",
      "lbr": "cd74hct574pwr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2677898",
      "digikey": "296-17126-2-ND",
      "mouser": "595-CD74HCT574PWR"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T00:23:23Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-17126-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-CD74HCT574PWR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "OE",
        "type": "input",
        "description": "Active-low output enable; when HIGH the Q outputs are in the high-impedance state, independent of register operation."
      },
      {
        "number": "2",
        "name": "D0",
        "type": "input",
        "description": "Data input 0, latched on the LOW-to-HIGH transition of CP."
      },
      {
        "number": "3",
        "name": "D1",
        "type": "input",
        "description": "Data input 1, latched on the LOW-to-HIGH transition of CP."
      },
      {
        "number": "4",
        "name": "D2",
        "type": "input",
        "description": "Data input 2, latched on the LOW-to-HIGH transition of CP."
      },
      {
        "number": "5",
        "name": "D3",
        "type": "input",
        "description": "Data input 3, latched on the LOW-to-HIGH transition of CP."
      },
      {
        "number": "6",
        "name": "D4",
        "type": "input",
        "description": "Data input 4, latched on the LOW-to-HIGH transition of CP."
      },
      {
        "number": "7",
        "name": "D5",
        "type": "input",
        "description": "Data input 5, latched on the LOW-to-HIGH transition of CP."
      },
      {
        "number": "8",
        "name": "D6",
        "type": "input",
        "description": "Data input 6, latched on the LOW-to-HIGH transition of CP."
      },
      {
        "number": "9",
        "name": "D7",
        "type": "input",
        "description": "Data input 7, latched on the LOW-to-HIGH transition of CP."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "11",
        "name": "CP",
        "type": "input",
        "description": "Clock input; data is entered into the registers on the LOW-to-HIGH transition."
      },
      {
        "number": "12",
        "name": "Q7",
        "type": "tri_state",
        "description": "3-state flip-flop output 7, high-impedance when OE is HIGH; drives up to 15 LSTTL loads."
      },
      {
        "number": "13",
        "name": "Q6",
        "type": "tri_state",
        "description": "3-state flip-flop output 6, high-impedance when OE is HIGH; drives up to 15 LSTTL loads."
      },
      {
        "number": "14",
        "name": "Q5",
        "type": "tri_state",
        "description": "3-state flip-flop output 5, high-impedance when OE is HIGH; drives up to 15 LSTTL loads."
      },
      {
        "number": "15",
        "name": "Q4",
        "type": "tri_state",
        "description": "3-state flip-flop output 4, high-impedance when OE is HIGH; drives up to 15 LSTTL loads."
      },
      {
        "number": "16",
        "name": "Q3",
        "type": "tri_state",
        "description": "3-state flip-flop output 3, high-impedance when OE is HIGH; drives up to 15 LSTTL loads."
      },
      {
        "number": "17",
        "name": "Q2",
        "type": "tri_state",
        "description": "3-state flip-flop output 2, high-impedance when OE is HIGH; drives up to 15 LSTTL loads."
      },
      {
        "number": "18",
        "name": "Q1",
        "type": "tri_state",
        "description": "3-state flip-flop output 1, high-impedance when OE is HIGH; drives up to 15 LSTTL loads."
      },
      {
        "number": "19",
        "name": "Q0",
        "type": "tri_state",
        "description": "3-state flip-flop output 0, high-impedance when OE is HIGH; drives up to 15 LSTTL loads."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, 4.5 V to 5.5 V for HCT types, 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-sonnet-5-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 27,
        "cost_usd": 0.5785,
        "at": "2026-10-08T00:23:05"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/cd74hct574.pdf",
        "pages": 27,
        "sha256": "fca1397379cec05b",
        "source_tier": "mfr"
      },
      "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": "cd74hct574pwr.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": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cd74hct574pwr-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": "98b7ded8a6759c177771b1ca882e3aa5e0e2dc484f3012be203bc2f097092d69",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}