SN74HC164PW

{
  "slug": "sn74hc164pw",
  "version": "0.1.0",
  "type": "component",
  "description": "lingxingic Shift Registers, TSSOP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "sn74hc164pw",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn74hc164pw.kicad_sym",
    "sn74hc164pw.kicad_mod",
    "sn74hc164pw.glb",
    "sn74hc164pw.step",
    "sn74hc164pw.lbr",
    "docs/hero.png",
    "docs/sn74hc164pw-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sn74hc164pw-hero.glb",
    "sn74hc164pw-hero.overlay.json"
  ],
  "component": {
    "mpn": "SN74HC164PW",
    "manufacturer": "lingxingic",
    "package": "TSSOP-14",
    "pin_count": 14,
    "category": "Logic",
    "subcategory": "Shift Registers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603388677385310208",
    "parts": {
      "symbol": "sn74hc164pw.kicad_sym",
      "footprint": "sn74hc164pw.kicad_mod",
      "model_3d": "sn74hc164pw-hero.glb",
      "model_3d_plain": "sn74hc164pw.glb",
      "model_3d_step": "sn74hc164pw-etched.step",
      "model_3d_step_plain": "sn74hc164pw.step",
      "lbr": "sn74hc164pw.lbr"
    },
    "distributor_links": {
      "lcsc": "C32710646",
      "mouser": "595-SN74HC164PW"
    },
    "distributor_check": {
      "checked_at": "2026-10-09T21:42:32Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 547 calls left today"
      },
      "mouser": {
        "pn": "595-SN74HC164PW",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "DSA",
        "type": "input",
        "description": "Gated serial data input DSA; either DSA or DSB can act as a high-level enable for the other serial input, and data is shifted in on the CP rising edge."
      },
      {
        "number": "2",
        "name": "DSB",
        "type": "input",
        "description": "Gated serial data input DSB; either DSB or DSA can act as a high-level enable for the other serial input, and data is shifted in on the CP rising edge."
      },
      {
        "number": "3",
        "name": "Q0",
        "type": "output",
        "description": "Parallel data output Q0, which is forced low when MR is low and otherwise follows the shift register contents."
      },
      {
        "number": "4",
        "name": "Q1",
        "type": "output",
        "description": "Parallel data output Q1, which is forced low when MR is low and otherwise follows the shift register contents."
      },
      {
        "number": "5",
        "name": "Q2",
        "type": "output",
        "description": "Parallel data output Q2, which is forced low when MR is low and otherwise follows the shift register contents."
      },
      {
        "number": "6",
        "name": "Q3",
        "type": "output",
        "description": "Parallel data output Q3, which is forced low when MR is low and otherwise follows the shift register contents."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference, 0 V."
      },
      {
        "number": "8",
        "name": "CP",
        "type": "input",
        "description": "Clock input; the register shifts data on the rising edge of CP."
      },
      {
        "number": "9",
        "name": "MR",
        "type": "input",
        "description": "Asynchronous master reset, active low; when low it clears the register and forces all outputs Q0 to Q7 low independent of the other inputs."
      },
      {
        "number": "10",
        "name": "Q4",
        "type": "output",
        "description": "Parallel data output Q4, which is forced low when MR is low and otherwise follows the shift register contents."
      },
      {
        "number": "11",
        "name": "Q5",
        "type": "output",
        "description": "Parallel data output Q5, which is forced low when MR is low and otherwise follows the shift register contents."
      },
      {
        "number": "12",
        "name": "Q6",
        "type": "output",
        "description": "Parallel data output Q6, which is forced low when MR is low and otherwise follows the shift register contents."
      },
      {
        "number": "13",
        "name": "Q7",
        "type": "output",
        "description": "Parallel data output Q7, which is forced low when MR is low and otherwise follows the shift register contents."
      },
      {
        "number": "14",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage; recommended operating range 2.0 V to 6.0 V, 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 TSSOP14 pin table is the single pin-function list on page 6 (pins 1-14, no separate per-package ; Pin 9 is printed as 'MR' with an overbar in the original; it is described as active low (低电平有效) in t"
        ],
        "pages_sent": 20,
        "cost_usd": 0.0845,
        "at": "2026-10-09T21:40:06"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603388677385310208",
        "pages": 20,
        "sha256": "fef1526317b718fd",
        "source_tier": "lcsc"
      },
      "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": "sn74hc164pw.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5.0,
          1.0
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "3ee5786aae56190997aa793ba3cfc003fd616782770e29719b4562f012982245",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn74hc164pw-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5.0,
          1.0
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "a8b9b38f507cf770f6cc973adfee2d5514ab6f2eea86139c79ce1feb0b28876e",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}