74HC595PW

{
  "schema_version": 1,
  "type": "component",
  "slug": "74hc595pw",
  "title": "74HC595PW",
  "brief": "Nexperia Shifting Register, TSSOP-16. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "logic",
    "74hc595pw"
  ],
  "component": {
    "mpn": "74HC595PW",
    "manufacturer": "Nexperia",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Shifting Register",
    "datasheet": "https://assets.nexperia.com/documents/data-sheet/74HC595PW.pdf",
    "parts": {
      "symbol": "74hc595pw.kicad_sym",
      "footprint": "74hc595pw.kicad_mod",
      "model_3d": "74hc595pw-etched.glb",
      "model_3d_plain": "74hc595pw.glb",
      "model_3d_step": "74hc595pw-etched.step",
      "model_3d_step_plain": "74hc595pw.step",
      "lbr": "74hc595pw.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "Q1",
        "type": "output",
        "description": "Parallel data output bit 1 from the storage register. 3-state; driven when OE is LOW, high-impedance when OE is HIGH. Bus driver output: sourcing/sinking up to ~6 mA at VCC = 4.5 V."
      },
      {
        "number": "2",
        "name": "Q2",
        "type": "output",
        "description": "Parallel data output bit 2 from the storage register. 3-state; driven when OE is LOW, high-impedance when OE is HIGH."
      },
      {
        "number": "3",
        "name": "Q3",
        "type": "output",
        "description": "Parallel data output bit 3 from the storage register. 3-state; driven when OE is LOW, high-impedance when OE is HIGH."
      },
      {
        "number": "4",
        "name": "Q4",
        "type": "output",
        "description": "Parallel data output bit 4 from the storage register. 3-state; driven when OE is LOW, high-impedance when OE is HIGH."
      },
      {
        "number": "5",
        "name": "Q5",
        "type": "output",
        "description": "Parallel data output bit 5 from the storage register. 3-state; driven when OE is LOW, high-impedance when OE is HIGH."
      },
      {
        "number": "6",
        "name": "Q6",
        "type": "output",
        "description": "Parallel data output bit 6 from the storage register. 3-state; driven when OE is LOW, high-impedance when OE is HIGH."
      },
      {
        "number": "7",
        "name": "Q7",
        "type": "output",
        "description": "Parallel data output bit 7 (MSB) from the storage register. 3-state; driven when OE is LOW, high-impedance when OE is HIGH."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (0 V). Connect to system ground."
      },
      {
        "number": "9",
        "name": "Q7S",
        "type": "output",
        "description": "Serial data output from the last stage of the shift register. Used to cascade multiple 74HC595 devices by tying to the next stage's DS input. Non-3-state; drives up to ~4 mA at VCC = 4.5 V."
      },
      {
        "number": "10",
        "name": "MR",
        "type": "input",
        "description": "Master reset input, active LOW. A LOW level asynchronously clears the shift register (does not affect the storage register/parallel outputs). Must be held HIGH during normal shift operation."
      },
      {
        "number": "11",
        "name": "SHCP",
        "type": "input",
        "description": "Shift register clock input. Data on DS is shifted into the shift register on the LOW-to-HIGH transition of SHCP. Equivalent to the SPI SCK for the shift stage; typical max frequency ~100 MHz at VCC = 6 V."
      },
      {
        "number": "12",
        "name": "STCP",
        "type": "input",
        "description": "Storage register clock input (latch). On the LOW-to-HIGH transition of STCP, the contents of the shift register are transferred to the storage register and appear on Q0..Q7. Commonly called the 'latch' or 'RCK' pin."
      },
      {
        "number": "13",
        "name": "OE",
        "type": "input",
        "description": "Output enable input, active LOW. LOW enables the Q0..Q7 parallel outputs; HIGH forces Q0..Q7 to a high-impedance OFF-state. Does not affect the state of the shift or storage registers."
      },
      {
        "number": "14",
        "name": "DS",
        "type": "input",
        "description": "Serial data input. Sampled into shift register stage 0 on the LOW-to-HIGH edge of SHCP. Equivalent to SPI MOSI for cascaded shift-register chains."
      },
      {
        "number": "15",
        "name": "Q0",
        "type": "output",
        "description": "Parallel data output bit 0 (LSB) from the storage register. 3-state; driven when OE is LOW, high-impedance when OE is HIGH."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply voltage. Operating range 2.0 V to 6.0 V (74HC595) / 4.5 V to 5.5 V (74HCT595). Absolute maximum 7 V. Decouple locally with a 100 nF ceramic capacitor to GND."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://assets.nexperia.com/documents/data-sheet/74HC595PW.pdf",
        "pages": 21,
        "sha256": "fa24207e780cd8c4",
        "source_tier": "mfr"
      },
      "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.8625,
        -2.275
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "TSSOP-16_4.4x5mm_P0.65mm@sha256:fbac79fc5f310754",
      "mark": "drawn"
    },
    "logic": {
      "family_id": "74HC595",
      "logic_family": "74HC",
      "function_code": "595",
      "function_class": "ShiftRegister",
      "function_name": "8-Bit SIPO Shift Register with Output Latch",
      "manufacturer": null,
      "is_specialty": false
    },
    "models_3d": [
      {
        "file": "74hc595pw.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5.0,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "6ad5e98224d02a427d9a6b929a28dbc158b9925fba5adec12db05079f1016948",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74hc595pw-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5.0,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "2baa4a045cfdf11821121d66c7e25db33a955ae7064e6d775e02e8f747fd6b1f",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Nexperia",
      "Package": "TSSOP-16",
      "Category": "Logic",
      "Pins": "16"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "74hc595pw"
  ],
  "discovery_pitch": "74HC595PW (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",
    "74hc595pw.kicad_sym",
    "74hc595pw.kicad_mod",
    "74hc595pw.glb",
    "74hc595pw.step",
    "74hc595pw-etched.step",
    "74hc595pw.lbr",
    "docs/hero.png",
    "docs/74hc595pw-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T15:03:12.620Z"
}