SN74AHCT595N

{
  "slug": "sn74ahct595n",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Shifting Register, PDIP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic ics",
    "sn74ahct595n",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn74ahct595n.kicad_sym",
    "sn74ahct595n.kicad_mod",
    "sn74ahct595n.glb",
    "sn74ahct595n.step",
    "sn74ahct595n.lbr",
    "docs/hero.png",
    "docs/sn74ahct595n-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sn74ahct595n-hero.glb",
    "sn74ahct595n-hero.overlay.json",
    "sn74ahct595n-etched.glb"
  ],
  "component": {
    "mpn": "SN74AHCT595N",
    "manufacturer": "Texas Instruments",
    "package": "PDIP-16",
    "pin_count": 16,
    "category": "Logic ICs",
    "subcategory": "Shifting Register",
    "datasheet": "https://www.ti.com/lit/ds/symlink/sn74ahct595n.pdf",
    "parts": {
      "symbol": "sn74ahct595n.kicad_sym",
      "footprint": "sn74ahct595n.kicad_mod",
      "model_3d": "sn74ahct595n-hero.glb",
      "model_3d_plain": "sn74ahct595n-etched.glb",
      "model_3d_step": "sn74ahct595n-etched.step",
      "model_3d_step_plain": "sn74ahct595n.step",
      "lbr": "sn74ahct595n.lbr"
    },
    "distributor_links": {
      "lcsc": "C2879063",
      "digikey": "2156-SN74AHCT595N-ND",
      "mouser": "595-SN74AHCT595N"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T12:42:54Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2156-SN74AHCT595N-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-SN74AHCT595N",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "QB",
        "type": "tri_state",
        "description": "QB 3-state storage-register output, high-impedance when OE is high."
      },
      {
        "number": "2",
        "name": "QC",
        "type": "tri_state",
        "description": "QC 3-state storage-register output, high-impedance when OE is high."
      },
      {
        "number": "3",
        "name": "QD",
        "type": "tri_state",
        "description": "QD 3-state storage-register output, high-impedance when OE is high."
      },
      {
        "number": "4",
        "name": "QE",
        "type": "tri_state",
        "description": "QE 3-state storage-register output, high-impedance when OE is high."
      },
      {
        "number": "5",
        "name": "QF",
        "type": "tri_state",
        "description": "QF 3-state storage-register output, high-impedance when OE is high."
      },
      {
        "number": "6",
        "name": "QG",
        "type": "tri_state",
        "description": "QG 3-state storage-register output, high-impedance when OE is high."
      },
      {
        "number": "7",
        "name": "QH",
        "type": "tri_state",
        "description": "QH 3-state storage-register output, high-impedance when OE is high."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "9",
        "name": "QH'",
        "type": "output",
        "description": "Serial output of the shift register for cascading, not 3-state."
      },
      {
        "number": "10",
        "name": "SRCLR",
        "type": "input",
        "description": "Active-low direct clear of the shift register (shift register is cleared when low)."
      },
      {
        "number": "11",
        "name": "SRCLK",
        "type": "input",
        "description": "Shift register clock input, positive-edge triggered."
      },
      {
        "number": "12",
        "name": "RCLK",
        "type": "input",
        "description": "Storage register clock input, positive-edge triggered; stores shift-register data."
      },
      {
        "number": "13",
        "name": "OE",
        "type": "input",
        "description": "Output enable; outputs QA-QH are in the high-impedance state when high and enabled when low."
      },
      {
        "number": "14",
        "name": "SER",
        "type": "input",
        "description": "Serial data input to the shift register."
      },
      {
        "number": "15",
        "name": "QA",
        "type": "tri_state",
        "description": "QA 3-state storage-register output, high-impedance when OE is high."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply pin, 4.5 V to 5.5 V recommended operating range."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-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 Functions table header is garbled in extraction. I took the 16-pin numbers (D, DB, N, NS, PW; The datasheet text does not state that SRCLR is active-low. I inferred it from the function table, w"
        ],
        "pages_sent": 28,
        "cost_usd": 0.1803,
        "at": "2026-10-23T12:42:39"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/sn74ahct595n.pdf",
        "pages": 28,
        "sha256": "0f8b895e2840ffc2",
        "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"
    },
    "models_3d": [
      {
        "file": "sn74ahct595n.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": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn74ahct595n-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": "bc5636aa8d6c7d47af4c756f3fcd95f15916933e29d3827f4d3c2988525a94c9",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}