CD74HC688PWR

{
  "slug": "cd74hc688pwr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Digital Comparators, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "cd74hc688pwr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cd74hc688pwr.kicad_sym",
    "cd74hc688pwr.kicad_mod",
    "cd74hc688pwr.glb",
    "cd74hc688pwr.step",
    "cd74hc688pwr.lbr",
    "docs/hero.png",
    "docs/cd74hc688pwr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cd74hc688pwr-hero.glb",
    "cd74hc688pwr-hero.overlay.json"
  ],
  "component": {
    "mpn": "CD74HC688PWR",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Digital Comparators",
    "datasheet": "https://www.ti.com/lit/ds/symlink/cd74hc688.pdf",
    "parts": {
      "symbol": "cd74hc688pwr.kicad_sym",
      "footprint": "cd74hc688pwr.kicad_mod",
      "model_3d": "cd74hc688pwr-hero.glb",
      "model_3d_plain": "cd74hc688pwr.glb",
      "model_3d_step": "cd74hc688pwr-etched.step",
      "model_3d_step_plain": "cd74hc688pwr.step",
      "lbr": "cd74hc688pwr.lbr"
    },
    "distributor_links": {
      "lcsc": "C1848271",
      "digikey": "296-CD74HC688PWRTR-ND",
      "mouser": "595-CD74HC688PWR"
    },
    "distributor_check": {
      "checked_at": "2026-10-12T02:30:10Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-CD74HC688PWRTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-CD74HC688PWR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "E",
        "type": "input",
        "description": "Active-low enable input; when high, Y is forced high regardless of A and B, and when low Y is low if A = B."
      },
      {
        "number": "2",
        "name": "A0",
        "type": "input",
        "description": "Word A data input bit 0, compared against B0."
      },
      {
        "number": "3",
        "name": "B0",
        "type": "input",
        "description": "Word B data input bit 0, compared against A0."
      },
      {
        "number": "4",
        "name": "A1",
        "type": "input",
        "description": "Word A data input bit 1, compared against B1."
      },
      {
        "number": "5",
        "name": "B1",
        "type": "input",
        "description": "Word B data input bit 1, compared against A1."
      },
      {
        "number": "6",
        "name": "A2",
        "type": "input",
        "description": "Word A data input bit 2, compared against B2."
      },
      {
        "number": "7",
        "name": "B2",
        "type": "input",
        "description": "Word B data input bit 2, compared against A2."
      },
      {
        "number": "8",
        "name": "A3",
        "type": "input",
        "description": "Word A data input bit 3, compared against B3."
      },
      {
        "number": "9",
        "name": "B3",
        "type": "input",
        "description": "Word B data input bit 3, compared against A3."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground supply pin."
      },
      {
        "number": "11",
        "name": "A4",
        "type": "input",
        "description": "Word A data input bit 4, compared against B4."
      },
      {
        "number": "12",
        "name": "B4",
        "type": "input",
        "description": "Word B data input bit 4, compared against A4."
      },
      {
        "number": "13",
        "name": "A5",
        "type": "input",
        "description": "Word A data input bit 5, compared against B5."
      },
      {
        "number": "14",
        "name": "B5",
        "type": "input",
        "description": "Word B data input bit 5, compared against A5."
      },
      {
        "number": "15",
        "name": "A6",
        "type": "input",
        "description": "Word A data input bit 6, compared against B6."
      },
      {
        "number": "16",
        "name": "B6",
        "type": "input",
        "description": "Word B data input bit 6, compared against A6."
      },
      {
        "number": "17",
        "name": "A7",
        "type": "input",
        "description": "Word A data input bit 7, compared against B7."
      },
      {
        "number": "18",
        "name": "B7",
        "type": "input",
        "description": "Word B data input bit 7, compared against A7."
      },
      {
        "number": "19",
        "name": "Y",
        "type": "output",
        "description": "Comparator output; low when A = B with E low, high otherwise, and usable as the enable input of a cascaded device."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply pin; 2 V to 6 V for HC types, with a 0.1-µF bypass capacitor recommended."
      }
    ],
    "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": 25,
        "cost_usd": 0.4206,
        "at": "2026-10-12T02:29:52"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/cd74hc688.pdf",
        "pages": 25,
        "sha256": "054eb5c519094630",
        "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": "cd74hc688pwr.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": "2026-10-12",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cd74hc688pwr-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": "d16d2d4de8906d28f94c1578edff7cb885c370df5376064cd659251c92e2b489",
        "checked": "2026-10-12",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}