SA555P

{
  "schema_version": 1,
  "type": "component",
  "slug": "sa555p",
  "title": "SA555P",
  "brief": "Texas Instruments Timers / Counters, DIP-8. 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",
    "clock-timing",
    "sa555p",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "SA555P",
    "manufacturer": "Texas Instruments",
    "package": "DIP-8",
    "pin_count": 8,
    "category": "Clock/Timing",
    "subcategory": "Timers / Counters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/se555",
    "parts": {
      "symbol": "sa555p.kicad_sym",
      "footprint": "sa555p.kicad_mod",
      "model_3d": "sa555p-hero.glb",
      "model_3d_plain": "sa555p.glb",
      "model_3d_step": "sa555p-etched.step",
      "model_3d_step_plain": "sa555p.step",
      "lbr": "sa555p.lbr"
    },
    "distributor_links": {
      "lcsc": "C129708",
      "digikey": "2156-SA555P-ND",
      "mouser": "595-SA555P"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T19:53:41Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2156-SA555P-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-SA555P",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device; all voltages in the datasheet are referenced to GND."
      },
      {
        "number": "2",
        "name": "TRIG",
        "type": "input",
        "description": "Timing start input; when TRIG is below 1/2 CONT the output is set high and the discharge pin is open."
      },
      {
        "number": "3",
        "name": "OUT",
        "type": "output",
        "description": "High-current timer output; recommended output current is ±200 mA."
      },
      {
        "number": "4",
        "name": "RESET",
        "type": "input",
        "description": "Active-low reset input that forces the output and discharge pin low; tie to VCC when unused to avoid false triggering."
      },
      {
        "number": "5",
        "name": "CONT",
        "type": "bidirectional",
        "description": "Controls the comparator threshold, provides 2/3 × VCC at the pin, and allows a bypass capacitor to be connected."
      },
      {
        "number": "6",
        "name": "THRES",
        "type": "input",
        "description": "Timing end input; when THRES > CONT the output and discharge pin are driven low."
      },
      {
        "number": "7",
        "name": "DISCH",
        "type": "output",
        "description": "Open-collector output that discharges the timing capacitor, conducting to GND while the output is low."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage input; the recommended range for SA555 is 4.5 V to 16 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: Pin descriptions are English engineering summaries written from the Chinese (TI translation) pin tab; The DISCH output is an open-collector pin per the datasheet; the schema has no open-collector type, "
        ],
        "pages_sent": 20,
        "cost_usd": 0.0973,
        "at": "2026-10-08T19:53:04"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/se555",
        "pages": 40,
        "sha256": "7ce3a7a81c99394f",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "sa555p.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,
          9.27,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "4a377a56a8d9e9c0b86c095ef9ecc1869ac19e7f5069a3247b294250bf4f235d",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sa555p-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,
          9.27,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "aa1f0111d06f90910b27b9b04a2f74290644f6bec8ef4de397de726fd90a51b3",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "DIP-8",
      "Category": "Clock/Timing",
      "Pins": "8"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sa555p"
  ],
  "discovery_pitch": "SA555P (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",
    "sa555p.kicad_sym",
    "sa555p.kicad_mod",
    "sa555p.glb",
    "sa555p.step",
    "sa555p.lbr",
    "docs/hero.png",
    "docs/sa555p-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sa555p-hero.glb",
    "sa555p-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}