SN74ALS574BN

{
  "slug": "sn74als574bn",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Flip Flops, PDIP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic ics",
    "sn74als574bn",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn74als574bn.kicad_sym",
    "sn74als574bn.kicad_mod",
    "sn74als574bn.glb",
    "sn74als574bn.step",
    "sn74als574bn.lbr",
    "docs/hero.png",
    "docs/sn74als574bn-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sn74als574bn-hero.glb",
    "sn74als574bn-hero.overlay.json",
    "sn74als574bn-etched.glb"
  ],
  "component": {
    "mpn": "SN74ALS574BN",
    "manufacturer": "Texas Instruments",
    "package": "PDIP-20",
    "pin_count": 20,
    "category": "Logic ICs",
    "subcategory": "Flip Flops",
    "datasheet": "https://www.ti.com/lit/ds/symlink/sn74als574bn.pdf",
    "parts": {
      "symbol": "sn74als574bn.kicad_sym",
      "footprint": "sn74als574bn.kicad_mod",
      "model_3d": "sn74als574bn-hero.glb",
      "model_3d_plain": "sn74als574bn-etched.glb",
      "model_3d_step": "sn74als574bn-etched.step",
      "model_3d_step_plain": "sn74als574bn.step",
      "lbr": "sn74als574bn.lbr"
    },
    "distributor_links": {
      "lcsc": "C2869288",
      "digikey": "296-1504-5-ND",
      "mouser": "595-SN74ALS574BN"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T01:40:36Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-1504-5-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-SN74ALS574BN",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "OE",
        "type": "input",
        "description": "Output-enable input, active low; when high the 3-state outputs are high-impedance without affecting internal flip-flop operation."
      },
      {
        "number": "2",
        "name": "1D",
        "type": "input",
        "description": "Data input for flip-flop 1, latched on the low-to-high transition of CLK."
      },
      {
        "number": "3",
        "name": "2D",
        "type": "input",
        "description": "Data input for flip-flop 2, latched on the low-to-high transition of CLK."
      },
      {
        "number": "4",
        "name": "3D",
        "type": "input",
        "description": "Data input for flip-flop 3, latched on the low-to-high transition of CLK."
      },
      {
        "number": "5",
        "name": "4D",
        "type": "input",
        "description": "Data input for flip-flop 4, latched on the low-to-high transition of CLK."
      },
      {
        "number": "6",
        "name": "5D",
        "type": "input",
        "description": "Data input for flip-flop 5, latched on the low-to-high transition of CLK."
      },
      {
        "number": "7",
        "name": "6D",
        "type": "input",
        "description": "Data input for flip-flop 6, latched on the low-to-high transition of CLK."
      },
      {
        "number": "8",
        "name": "7D",
        "type": "input",
        "description": "Data input for flip-flop 7, latched on the low-to-high transition of CLK."
      },
      {
        "number": "9",
        "name": "8D",
        "type": "input",
        "description": "Data input for flip-flop 8, latched on the low-to-high transition of CLK."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "11",
        "name": "CLK",
        "type": "input",
        "description": "Clock input; the eight flip-flops enter data on its low-to-high transition."
      },
      {
        "number": "12",
        "name": "8Q",
        "type": "tri_state",
        "description": "3-state noninverting buffer-type output of flip-flop 8, able to drive bus lines directly."
      },
      {
        "number": "13",
        "name": "7Q",
        "type": "tri_state",
        "description": "3-state noninverting buffer-type output of flip-flop 7, able to drive bus lines directly."
      },
      {
        "number": "14",
        "name": "6Q",
        "type": "tri_state",
        "description": "3-state noninverting buffer-type output of flip-flop 6, able to drive bus lines directly."
      },
      {
        "number": "15",
        "name": "5Q",
        "type": "tri_state",
        "description": "3-state noninverting buffer-type output of flip-flop 5, able to drive bus lines directly."
      },
      {
        "number": "16",
        "name": "4Q",
        "type": "tri_state",
        "description": "3-state noninverting buffer-type output of flip-flop 4, able to drive bus lines directly."
      },
      {
        "number": "17",
        "name": "3Q",
        "type": "tri_state",
        "description": "3-state noninverting buffer-type output of flip-flop 3, able to drive bus lines directly."
      },
      {
        "number": "18",
        "name": "2Q",
        "type": "tri_state",
        "description": "3-state noninverting buffer-type output of flip-flop 2, able to drive bus lines directly."
      },
      {
        "number": "19",
        "name": "1Q",
        "type": "tri_state",
        "description": "3-state noninverting buffer-type output of flip-flop 1, able to drive bus lines directly."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, recommended 4.5 V to 5.5 V (absolute maximum 7 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",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin-to-name mapping read from the extracted top-view text of the DW/N package diagram (pins 1-10 lef"
        ],
        "pages_sent": 22,
        "cost_usd": 0.1565,
        "at": "2026-10-27T01:40:07"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/sn74als574bn.pdf",
        "pages": 22,
        "sha256": "9ca1967f9d1cf4b0",
        "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": "sn74als574bn.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": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn74als574bn-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,
          26.162,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "e77e94b7dcafa5165143ae174e52ec1f7a84bbb312e24edc70ba61e2de94a746",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}