SN74LS194N

{
  "slug": "sn74ls194n",
  "version": "0.1.0",
  "type": "component",
  "description": "lingxingic Shift Registers, DIP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "sn74ls194n",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn74ls194n.kicad_sym",
    "sn74ls194n.kicad_mod",
    "sn74ls194n.glb",
    "sn74ls194n.step",
    "sn74ls194n.lbr",
    "docs/hero.png",
    "docs/sn74ls194n-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sn74ls194n-hero.glb",
    "sn74ls194n-hero.overlay.json",
    "sn74ls194n-etched.glb"
  ],
  "component": {
    "mpn": "SN74LS194N",
    "manufacturer": "lingxingic",
    "package": "DIP-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Shift Registers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603393142633095168",
    "parts": {
      "symbol": "sn74ls194n.kicad_sym",
      "footprint": "sn74ls194n.kicad_mod",
      "model_3d": "sn74ls194n-hero.glb",
      "model_3d_plain": "sn74ls194n-etched.glb",
      "model_3d_step": "sn74ls194n-etched.step",
      "model_3d_step_plain": "sn74ls194n.step",
      "lbr": "sn74ls194n.lbr"
    },
    "distributor_links": {
      "lcsc": "C22449632"
    },
    "distributor_check": {
      "checked_at": "2026-10-15T09:42:40Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "MR",
        "type": "input",
        "description": "Asynchronous master reset input, active low, which clears the register to LOW outputs."
      },
      {
        "number": "2",
        "name": "DSR",
        "type": "input",
        "description": "Serial data input for shift right, which is loaded into Q3 on a LOW-to-HIGH CP transition when S1=H and S0=L."
      },
      {
        "number": "3",
        "name": "D0",
        "type": "input",
        "description": "Parallel data input 0, loaded into Q0 on a parallel load (S1=H, S0=H) at the LOW-to-HIGH CP transition."
      },
      {
        "number": "4",
        "name": "D1",
        "type": "input",
        "description": "Parallel data input 1, loaded into Q1 on a parallel load (S1=H, S0=H) at the LOW-to-HIGH CP transition."
      },
      {
        "number": "5",
        "name": "D2",
        "type": "input",
        "description": "Parallel data input 2, loaded into Q2 on a parallel load (S1=H, S0=H) at the LOW-to-HIGH CP transition."
      },
      {
        "number": "6",
        "name": "D3",
        "type": "input",
        "description": "Parallel data input 3, loaded into Q3 on a parallel load (S1=H, S0=H) at the LOW-to-HIGH CP transition."
      },
      {
        "number": "7",
        "name": "DSL",
        "type": "input",
        "description": "Serial data input for shift left, which is loaded into Q0 on a LOW-to-HIGH CP transition when S1=H and S0=L."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (0 V) reference for all voltages."
      },
      {
        "number": "9",
        "name": "S0",
        "type": "input",
        "description": "Mode control input that selects the operating mode together with S1 (hold, shift left, shift right, parallel load, reset)."
      },
      {
        "number": "10",
        "name": "S1",
        "type": "input",
        "description": "Mode control input that selects the operating mode together with S0 (hold, shift left, shift right, parallel load, reset)."
      },
      {
        "number": "11",
        "name": "CP",
        "type": "input",
        "description": "Clock input, active on the LOW-to-HIGH edge; mode control, data and serial inputs must meet set-up and hold times relative to it."
      },
      {
        "number": "12",
        "name": "Q3",
        "type": "output",
        "description": "Parallel register output bit 3."
      },
      {
        "number": "13",
        "name": "Q2",
        "type": "output",
        "description": "Parallel register output bit 2."
      },
      {
        "number": "14",
        "name": "Q1",
        "type": "output",
        "description": "Parallel register output bit 1."
      },
      {
        "number": "15",
        "name": "Q0",
        "type": "output",
        "description": "Parallel register output bit 0."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage; recommended operating range is 2.0 V to 6.0 V with respect to GND."
      }
    ],
    "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 pin configuration figure (page 5) is garbled in the text extraction, so the pin-to-number mappin; The datasheet gives one pin table for the device and does not list a separate pinout per package (DI; The pin 2 and pin 7 descriptions in the source read 'serious data input' (a likely typo for 'serial'"
        ],
        "pages_sent": 18,
        "cost_usd": 0.0569,
        "at": "2026-10-15T09:42:23"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603393142633095168",
        "pages": 18,
        "sha256": "7bab710efae4719b",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "sn74ls194n.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,
          19.177,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "17a30b1f0ab3fd5384a1231e3c63c394888d5b952c542a8c189e023ed3467464",
        "checked": "2026-10-15",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn74ls194n-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,
          19.177,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "c5bf707096c794ef4d294e934124ecbf7d2e5ed12ed8fc9c6f4c9096e9c90c64",
        "checked": "2026-10-15",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}