SN74LS688N

{
  "slug": "sn74ls688n",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Pre-ordered Chips, PDIP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface ics",
    "sn74ls688n",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn74ls688n.kicad_sym",
    "sn74ls688n.kicad_mod",
    "sn74ls688n.glb",
    "sn74ls688n.step",
    "sn74ls688n.lbr",
    "docs/hero.png",
    "docs/sn74ls688n-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sn74ls688n-hero.glb",
    "sn74ls688n-hero.overlay.json",
    "sn74ls688n-etched.glb"
  ],
  "component": {
    "mpn": "SN74LS688N",
    "manufacturer": "Texas Instruments",
    "package": "PDIP-20",
    "pin_count": 20,
    "category": "Interface ICs",
    "subcategory": "Pre-ordered Chips",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/f095f8784bb76968655c56e74cc5a24f.pdf",
    "parts": {
      "symbol": "sn74ls688n.kicad_sym",
      "footprint": "sn74ls688n.kicad_mod",
      "model_3d": "sn74ls688n-hero.glb",
      "model_3d_plain": "sn74ls688n-etched.glb",
      "model_3d_step": "sn74ls688n-etched.step",
      "model_3d_step_plain": "sn74ls688n.step",
      "lbr": "sn74ls688n.lbr"
    },
    "distributor_links": {
      "lcsc": "C1523715",
      "digikey": "296-1667-5-ND",
      "mouser": "595-SN74LS688N"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T15:33:01Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-1667-5-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-SN74LS688N",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "G̅",
        "type": "input",
        "description": "Active-low enable input with hysteresis; a high level forces the P=Q output high, and the input is rated up to 7 V."
      },
      {
        "number": "2",
        "name": "P0",
        "type": "input",
        "description": "P word data input bit 0 with hysteresis, rated up to 7 V."
      },
      {
        "number": "3",
        "name": "Q0",
        "type": "input",
        "description": "Q word data input bit 0 with hysteresis, rated up to 7 V."
      },
      {
        "number": "4",
        "name": "P1",
        "type": "input",
        "description": "P word data input bit 1 with hysteresis, rated up to 7 V."
      },
      {
        "number": "5",
        "name": "Q1",
        "type": "input",
        "description": "Q word data input bit 1 with hysteresis, rated up to 7 V."
      },
      {
        "number": "6",
        "name": "P2",
        "type": "input",
        "description": "P word data input bit 2 with hysteresis, rated up to 7 V."
      },
      {
        "number": "7",
        "name": "Q2",
        "type": "input",
        "description": "Q word data input bit 2 with hysteresis, rated up to 7 V."
      },
      {
        "number": "8",
        "name": "P3",
        "type": "input",
        "description": "P word data input bit 3 with hysteresis, rated up to 7 V."
      },
      {
        "number": "9",
        "name": "Q3",
        "type": "input",
        "description": "Q word data input bit 3 with hysteresis, rated up to 7 V."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground, the network ground terminal to which all voltage values are referenced."
      },
      {
        "number": "11",
        "name": "P4",
        "type": "input",
        "description": "P word data input bit 4 with hysteresis, rated up to 7 V."
      },
      {
        "number": "12",
        "name": "Q4",
        "type": "input",
        "description": "Q word data input bit 4 with hysteresis, rated up to 7 V."
      },
      {
        "number": "13",
        "name": "P5",
        "type": "input",
        "description": "P word data input bit 5 with hysteresis, rated up to 7 V."
      },
      {
        "number": "14",
        "name": "Q5",
        "type": "input",
        "description": "Q word data input bit 5 with hysteresis, rated up to 7 V."
      },
      {
        "number": "15",
        "name": "P6",
        "type": "input",
        "description": "P word data input bit 6 with hysteresis, rated up to 7 V."
      },
      {
        "number": "16",
        "name": "Q6",
        "type": "input",
        "description": "Q word data input bit 6 with hysteresis, rated up to 7 V."
      },
      {
        "number": "17",
        "name": "P7",
        "type": "input",
        "description": "P word data input bit 7 with hysteresis, rated up to 7 V."
      },
      {
        "number": "18",
        "name": "Q7",
        "type": "input",
        "description": "Q word data input bit 7 with hysteresis, rated up to 7 V."
      },
      {
        "number": "19",
        "name": "P=Q",
        "type": "output",
        "description": "Active-low totem-pole identity output that goes low when P equals Q, with recommended IOH of -400 µA and IOL of 24 mA for the SN74LS parts."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, recommended 4.85 V to 5.25 V for SN74LS688 with an absolute maximum of 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": "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": 12,
        "cost_usd": 0.0738,
        "at": "2026-10-28T15:32:39"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/f095f8784bb76968655c56e74cc5a24f.pdf",
        "pages": 24,
        "sha256": "5d405f27e656dcdf",
        "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": "sn74ls688n.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": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn74ls688n-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": "1e121c6ffbd0ff9c2e9eebbdb7db948154f50e05b8b1eb8897c7470060d5c120",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}