TLC555CDR

{
  "schema_version": 1,
  "type": "component",
  "slug": "tlc555cdr",
  "title": "TLC555CDR",
  "brief": "Texas Instruments Timers / Counters, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "clock-timing",
    "tlc555cdr"
  ],
  "component": {
    "mpn": "TLC555CDR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Clock/Timing",
    "subcategory": "Timers / Counters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/tlc555",
    "parts": {
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      "footprint": "tlc555cdr.kicad_mod",
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      "model_3d_step_plain": "tlc555cdr.step",
      "lbr": "tlc555cdr.lbr"
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    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (0 V) for the device."
      },
      {
        "number": "2",
        "name": "TRIG",
        "type": "input",
        "description": "Trigger input. When TRIG falls below 1/3 VDD, the internal flip-flop is set and OUT goes high; also starts the timing interval in monostable mode."
      },
      {
        "number": "3",
        "name": "OUT",
        "type": "output",
        "description": "Push-pull CMOS output. Sources/sinks up to ~100 mA depending on VDD; swings between GND and near VDD."
      },
      {
        "number": "4",
        "name": "RESET",
        "type": "input",
        "description": "Active-low reset. Pulling RESET below ~0.4 V forces OUT low and discharges the timing capacitor regardless of other inputs. Tie to VDD if unused."
      },
      {
        "number": "5",
        "name": "CONT",
        "type": "input",
        "description": "Control voltage. Provides access to the internal 2/3 VDD reference of the upper comparator; can be driven externally to modulate timing or bypassed to GND with 10 nF for noise immunity."
      },
      {
        "number": "6",
        "name": "THRES",
        "type": "input",
        "description": "Threshold input. When THRES rises above 2/3 VDD (or the voltage on CONT), the internal flip-flop is reset and OUT goes low."
      },
      {
        "number": "7",
        "name": "DISCH",
        "type": "output",
        "description": "Discharge. Open-drain N-channel transistor to GND used to discharge the external timing capacitor when OUT is low."
      },
      {
        "number": "8",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply, 2 V to 15 V (18 V absolute max). Bypass to GND with a 100 nF ceramic near the device."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/tlc555",
        "pages": 49,
        "sha256": "2141b3917cf4918a",
        "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": [
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        "file": "tlc555cdr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
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        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-8",
      "Category": "Clock/Timing",
      "Pins": "8"
    }
  },
  "variants": [
    {
      "mpn": "TLC555CDR",
      "kind": "packaging"
    },
    {
      "mpn": "TLC555CDRIDR",
      "kind": "packaging"
    },
    {
      "mpn": "TLC555CDRID",
      "kind": "packaging"
    },
    {
      "mpn": "TLC555CDRCP",
      "kind": "packaging"
    },
    {
      "mpn": "TLC555CDRIP",
      "kind": "packaging"
    },
    {
      "mpn": "TLC555CDRCDGKR",
      "kind": "packaging"
    },
    {
      "mpn": "TLC555CDRIDGKR",
      "kind": "packaging"
    },
    {
      "mpn": "TLC555CDRCPWR",
      "kind": "packaging"
    },
    {
      "mpn": "TLC555CDRIPWR",
      "kind": "packaging"
    }
  ],
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tlc555cdr"
  ],
  "discovery_pitch": "TLC555CDR (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
  },
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    "tlc555cdr.step",
    "tlc555cdr.lbr",
    "docs/hero.png",
    "docs/tlc555cdr-datasheet.pdf",
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  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-25T10:08:39.518Z"
}