SN74ALS164ADR

{
  "schema_version": 1,
  "type": "component",
  "slug": "sn74als164adr",
  "title": "SN74ALS164ADR",
  "brief": "Texas Instruments Shift Registers, SOIC-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "logic",
    "sn74als164adr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "SN74ALS164ADR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-14",
    "pin_count": 14,
    "category": "Logic",
    "subcategory": "Shift Registers",
    "datasheet": "https://www.ti.com/lit/ds/symlink/sn74als164a.pdf",
    "parts": {
      "symbol": "sn74als164adr.kicad_sym",
      "footprint": "sn74als164adr.kicad_mod",
      "model_3d": "sn74als164adr-hero.glb",
      "model_3d_plain": "sn74als164adr.glb",
      "model_3d_step": "sn74als164adr-etched.step",
      "model_3d_step_plain": "sn74als164adr.step",
      "lbr": "sn74als164adr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2859957",
      "digikey": "296-28994-2-ND",
      "mouser": "595-SN74ALS164ADR"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T09:26:03Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-28994-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-SN74ALS164ADR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "A",
        "type": "input",
        "description": "AND-gated serial data input: a low at A inhibits entry of new data and resets the first flip-flop to low at the next clock pulse, and A determines the first flip-flop state only while B is high."
      },
      {
        "number": "2",
        "name": "B",
        "type": "input",
        "description": "AND-gated serial data input: a low at B inhibits entry of new data and resets the first flip-flop to low at the next clock pulse, and B determines the first flip-flop state only while A is high."
      },
      {
        "number": "3",
        "name": "QA",
        "type": "output",
        "description": "Parallel output of the first register stage, which takes the AND of the serial inputs on each low-to-high CLK transition and is forced low by CLR."
      },
      {
        "number": "4",
        "name": "QB",
        "type": "output",
        "description": "Parallel output of register stage B, which shifts in the previous QA level on each low-to-high CLK transition and is forced low by CLR."
      },
      {
        "number": "5",
        "name": "QC",
        "type": "output",
        "description": "Parallel output of register stage C, which shifts in the previous QB level on each low-to-high CLK transition and is forced low by CLR."
      },
      {
        "number": "6",
        "name": "QD",
        "type": "output",
        "description": "Parallel output of register stage D, which shifts in the previous QC level on each low-to-high CLK transition and is forced low by CLR."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "8",
        "name": "CLK",
        "type": "input",
        "description": "Clock input; data shifts on the low-to-high-level transition of CLK and the clock input is fully buffered."
      },
      {
        "number": "9",
        "name": "CLR",
        "type": "input",
        "description": "Direct asynchronous clear: a low level sets all outputs QA through QH to low regardless of the clock."
      },
      {
        "number": "10",
        "name": "QE",
        "type": "output",
        "description": "Parallel output of register stage E, which shifts in the previous QD level on each low-to-high CLK transition and is forced low by CLR."
      },
      {
        "number": "11",
        "name": "QF",
        "type": "output",
        "description": "Parallel output of register stage F, which shifts in the previous QE level on each low-to-high CLK transition and is forced low by CLR."
      },
      {
        "number": "12",
        "name": "QG",
        "type": "output",
        "description": "Parallel output of register stage G, which shifts in the previous QF level on each low-to-high CLK transition and is forced low by CLR."
      },
      {
        "number": "13",
        "name": "QH",
        "type": "output",
        "description": "Parallel output of the last register stage H, which shifts in the previous QG level on each low-to-high CLK transition and is forced low by CLR."
      },
      {
        "number": "14",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage: recommended 4.5 V to 5.5 V (5 V nominal), 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-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 top-view pin map in the extracted text is jumbled, so pin numbers were assigned by cross-checkin; Package addendum (page 6) and tape info (page 8) confirm SN74ALS164ADR is the SOIC (D) 14-pin varian; The output schema has no field for headline specs, so none are reported. For reference, the datashee"
        ],
        "pages_sent": 16,
        "cost_usd": 0.0564,
        "at": "2026-10-11T09:25:48"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/sn74als164a.pdf",
        "pages": 16,
        "sha256": "4624bf87e3523224",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 14,
        "described": 14,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "sn74als164adr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          8.7,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "3b9a775da256c8afcc28dcddfbc2eb3f266107fe61ce8446d96f2c52b6f44a70",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn74als164adr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          8.7,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "481a642c743f63145553413312401b6dd4c1f2c4303ef4a62e29b8e3b50fc0bc",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-14",
      "Category": "Logic",
      "Pins": "14"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sn74als164adr"
  ],
  "discovery_pitch": "SN74ALS164ADR (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn74als164adr.kicad_sym",
    "sn74als164adr.kicad_mod",
    "sn74als164adr.glb",
    "sn74als164adr.step",
    "sn74als164adr.lbr",
    "docs/hero.png",
    "docs/sn74als164adr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sn74als164adr-hero.glb",
    "sn74als164adr-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}