74HC164PW

{
  "schema_version": 1,
  "type": "component",
  "slug": "74hc164pw",
  "title": "74HC164PW",
  "brief": "Nexperia Shifting Register, TSSOP-14. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "logic",
    "74hc164pw"
  ],
  "component": {
    "mpn": "74HC164PW",
    "manufacturer": "Nexperia",
    "package": "TSSOP-14",
    "pin_count": 14,
    "category": "Logic",
    "subcategory": "Shifting Register",
    "datasheet": "https://assets.nexperia.com/documents/data-sheet/74HC164PW.pdf",
    "parts": {
      "symbol": "74hc164pw.kicad_sym",
      "footprint": "74hc164pw.kicad_mod",
      "model_3d": "74hc164pw-etched.glb",
      "model_3d_plain": "74hc164pw.glb",
      "model_3d_step": "74hc164pw-etched.step",
      "model_3d_step_plain": "74hc164pw.step",
      "lbr": "74hc164pw.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "DSA",
        "type": "input",
        "description": "Gated serial data input A. AND-combined with DSB to feed the first flip-flop; either input can serve as an active-HIGH enable for the other. Data must meet set-up/hold before the LOW-to-HIGH CP transition."
      },
      {
        "number": "2",
        "name": "DSB",
        "type": "input",
        "description": "Gated serial data input B. AND-combined with DSA to feed the first flip-flop; either input can serve as an active-HIGH enable for the other."
      },
      {
        "number": "3",
        "name": "Q0",
        "type": "output",
        "description": "Parallel data output, bit 0 (first stage of the shift register). CMOS push-pull output."
      },
      {
        "number": "4",
        "name": "Q1",
        "type": "output",
        "description": "Parallel data output, bit 1. CMOS push-pull output."
      },
      {
        "number": "5",
        "name": "Q2",
        "type": "output",
        "description": "Parallel data output, bit 2. CMOS push-pull output."
      },
      {
        "number": "6",
        "name": "Q3",
        "type": "output",
        "description": "Parallel data output, bit 3. CMOS push-pull output."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (0 V)."
      },
      {
        "number": "8",
        "name": "CP",
        "type": "input",
        "description": "Clock input. Data is shifted on the LOW-to-HIGH edge (edge-triggered). Maximum frequency typically 78 MHz at Vcc=5 V."
      },
      {
        "number": "9",
        "name": "MR",
        "type": "input",
        "description": "Master reset input, active LOW. Asynchronously clears the register and forces all Q outputs LOW, independent of CP."
      },
      {
        "number": "10",
        "name": "Q4",
        "type": "output",
        "description": "Parallel data output, bit 4. CMOS push-pull output."
      },
      {
        "number": "11",
        "name": "Q5",
        "type": "output",
        "description": "Parallel data output, bit 5. CMOS push-pull output."
      },
      {
        "number": "12",
        "name": "Q6",
        "type": "output",
        "description": "Parallel data output, bit 6. CMOS push-pull output."
      },
      {
        "number": "13",
        "name": "Q7",
        "type": "output",
        "description": "Parallel data output, bit 7 (last stage of the shift register). CMOS push-pull output."
      },
      {
        "number": "14",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply voltage. 74HC164: 2.0 to 6.0 V (recommended). 74HCT164: 4.5 to 5.5 V."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://assets.nexperia.com/documents/data-sheet/74HC164PW.pdf",
        "pages": 16,
        "sha256": "aa299aaeb852d99f",
        "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.8625,
        -1.95
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "TSSOP-14_4.4x5mm_P0.65mm@sha256:e4bf82cea6d3b325",
      "mark": "drawn"
    },
    "logic": {
      "family_id": "74HC164",
      "logic_family": "74HC",
      "function_code": "164",
      "function_class": "ShiftRegister",
      "function_name": "8-Bit SIPO Shift Register",
      "manufacturer": null,
      "is_specialty": false
    },
    "models_3d": [
      {
        "file": "74hc164pw.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": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74hc164pw-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": "489c7fd1792e3319874300b4ca77ade37147a4b93f32a80f9c9f9115afe94411",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Nexperia",
      "Package": "TSSOP-14",
      "Category": "Logic",
      "Pins": "14"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "74hc164pw"
  ],
  "discovery_pitch": "74HC164PW (Nexperia) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "74hc164pw.kicad_sym",
    "74hc164pw.kicad_mod",
    "74hc164pw.glb",
    "74hc164pw.step",
    "74hc164pw-etched.step",
    "74hc164pw.lbr",
    "docs/hero.png",
    "docs/74hc164pw-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T14:54:31.131Z"
}