TS555IDTTR

{
  "schema_version": 1,
  "type": "component",
  "slug": "ts555idttr",
  "title": "TS555IDTTR",
  "brief": "STMicroelectronics Timers / Clock Oscillators, SO-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "rtc",
    "ts555idttr"
  ],
  "component": {
    "mpn": "TS555IDTTR",
    "manufacturer": "STMicroelectronics",
    "package": "SO-8",
    "pin_count": 8,
    "category": "RTC",
    "subcategory": "Timers / Clock Oscillators",
    "datasheet": "https://www.st.com/resource/en/datasheet/ts555idttr.pdf",
    "parts": {
      "symbol": "ts555idttr.kicad_sym",
      "footprint": "ts555idttr.kicad_mod",
      "model_3d": "ts555idttr-etched.glb",
      "model_3d_plain": "ts555idttr.glb",
      "model_3d_step": "ts555idttr-etched.step",
      "model_3d_step_plain": "ts555idttr.step",
      "lbr": "ts555idttr.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground / negative supply reference (0 V)."
      },
      {
        "number": "2",
        "name": "Trigger",
        "type": "input",
        "description": "Trigger input. A falling edge below 1/3 Vcc sets the internal flip-flop and drives the Output high, starting a timing cycle. High input impedance CMOS input (~10^12 Ω)."
      },
      {
        "number": "3",
        "name": "Output",
        "type": "output",
        "description": "Push-pull CMOS timer output, compatible with TTL, CMOS and logic MOS loads. Rated for ±100 mA absolute max; recommended operating sink 10 mA / source 50 mA."
      },
      {
        "number": "4",
        "name": "Reset",
        "type": "input",
        "description": "Active-low reset. Driving this pin low forces the Output low regardless of Trigger/Threshold state; must be tied high (typically to Vcc) when not used."
      },
      {
        "number": "5",
        "name": "Control Voltage",
        "type": "input",
        "description": "Control voltage input, internally biased to 2/3 Vcc via the resistor divider. Allows external override of the internal threshold/trigger reference; typically decoupled to GND with a 10 nF capacitor when unused."
      },
      {
        "number": "6",
        "name": "Threshold",
        "type": "input",
        "description": "Threshold comparator input. When the voltage on this pin rises above 2/3 Vcc (or the Control Voltage reference), the internal flip-flop is reset and the Output goes low. High-impedance CMOS input."
      },
      {
        "number": "7",
        "name": "Discharge",
        "type": "output",
        "description": "Open-drain discharge pin, tied to the drain of an internal NMOS whose source is at GND. Used to discharge the external timing capacitor when the internal flip-flop is reset."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply, +2 V to +16 V operating range (absolute max +18 V). Typical Icc = 110 µA at Vcc = +5 V."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.st.com/resource/en/datasheet/ts555idttr.pdf",
        "pages": 19,
        "sha256": "d77d351cf231d8c7",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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      "footprint": "viewers/footprint.html"
    },
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.4,
          4.9,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "53b055ee4d166c0b9de551669cc1294f95b96baacbfe26d9316b576c1ce29fbf",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ts555idttr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d2e0a26039650a453e9e7ac580f079d950b16bbfc8452332651303e51be96069",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "SO-8",
      "Category": "RTC",
      "Pins": "8"
    }
  },
  "variants": [
    {
      "mpn": "TS555IDTTR",
      "kind": "packaging"
    }
  ],
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
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  "discovery_triggers": [
    "ts555idttr"
  ],
  "discovery_pitch": "TS555IDTTR (STMicroelectronics) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "ts555idttr.kicad_sym",
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    "ts555idttr.glb",
    "ts555idttr.step",
    "ts555idttr.lbr",
    "docs/hero.png",
    "docs/ts555idttr-datasheet.pdf",
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  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-25T13:02:11.877Z"
}