CD4098B Dual Monostable

{
  "schema_version": 1,
  "type": "component",
  "slug": "cd4098",
  "title": "CD4098B Dual Monostable",
  "brief": "Dual retriggerable/resettable monostable multivibrator in the 4000B CMOS family.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "logic",
    "monostable",
    "one-shot",
    "4000-series",
    "ti",
    "soic-16"
  ],
  "component": {
    "mpn": "CD4098B",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Monostable Multivibrator",
    "datasheet": "https://www.ti.com/lit/ds/symlink/cd4098b.pdf",
    "parts": {
      "symbol": "cd4098.kicad_sym",
      "footprint": "cd4098.kicad_mod",
      "model_3d": "cd4098-etched.glb",
      "model_3d_plain": "cd4098.glb",
      "model_3d_step": "cd4098-etched.step",
      "model_3d_step_plain": "cd4098.step",
      "lbr": "cd4098.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "Cx(1)",
        "type": "passive",
        "description": "External timing capacitor C_X1 node for MONO1 (other side of C_X1). Connect C_X1 between pin 1 and pin 2."
      },
      {
        "number": "2",
        "name": "RxCx(1)",
        "type": "passive",
        "description": "Timing node for MONO1: junction of external timing resistor R_X1 (to V_DD) and external timing capacitor C_X1. R_X minimum 5 kOhm; C_X maximum 100 uF. Pulse width T = K * R_X * C_X (approx 0.5*R_X*C_X for C_X >= 0.01 uF)."
      },
      {
        "number": "3",
        "name": "RESET(1)",
        "type": "input",
        "description": "Active-low RESET input for MONO1. Low level provides immediate termination of the output pulse or prevents output pulses when power is turned on. Tie to V_DD if unused."
      },
      {
        "number": "4",
        "name": "+TR(1)",
        "type": "input",
        "description": "Leading-edge (positive-going) trigger input for MONO1. Used when Q1 (pin 6) is connected to +TR for retriggerable leading-edge triggering. Tie to V_SS if unused."
      },
      {
        "number": "5",
        "name": "-TR(1)",
        "type": "input",
        "description": "Trailing-edge (negative-going) trigger input for MONO1. Used when Q1-bar (pin 7) is connected to -TR for retriggerable trailing-edge triggering. Tie to V_DD if unused."
      },
      {
        "number": "6",
        "name": "Q1",
        "type": "output",
        "description": "Buffered true output of MONO1. Active-high one-shot pulse output. V_OH >= V_DD - 0.05 V typical; I_OH up to 6.8 mA at 15 V."
      },
      {
        "number": "7",
        "name": "Q1_N",
        "type": "output",
        "description": "Buffered complementary (inverted) output of MONO1. Active-low one-shot pulse output."
      },
      {
        "number": "8",
        "name": "VSS",
        "type": "power_in",
        "description": "Negative supply / ground reference. Voltage referenced to V_SS terminal; supply voltage V_DD to V_SS = -0.5 V to +20 V absolute maximum, recommended 3-18 V."
      },
      {
        "number": "9",
        "name": "Q2_N",
        "type": "output",
        "description": "Buffered complementary (inverted) output of MONO2. Active-low one-shot pulse output."
      },
      {
        "number": "10",
        "name": "Q2",
        "type": "output",
        "description": "Buffered true output of MONO2. Active-high one-shot pulse output."
      },
      {
        "number": "11",
        "name": "-TR(2)",
        "type": "input",
        "description": "Trailing-edge (negative-going) trigger input for MONO2. Used when Q2-bar (pin 9) is connected to -TR for retriggerable trailing-edge triggering. Tie to V_DD if unused."
      },
      {
        "number": "12",
        "name": "+TR(2)",
        "type": "input",
        "description": "Leading-edge (positive-going) trigger input for MONO2. Used when Q2 (pin 10) is connected to +TR for retriggerable leading-edge triggering. Tie to V_SS if unused."
      },
      {
        "number": "13",
        "name": "RESET(2)",
        "type": "input",
        "description": "Active-low RESET input for MONO2. Low level provides immediate termination of the output pulse or prevents output pulses when power is turned on. Tie to V_DD if unused."
      },
      {
        "number": "14",
        "name": "RxCx(2)",
        "type": "passive",
        "description": "Timing node for MONO2: junction of external timing resistor R_X2 (to V_DD) and external timing capacitor C_X2. R_X minimum 5 kOhm; C_X maximum 100 uF."
      },
      {
        "number": "15",
        "name": "Cx(2)",
        "type": "passive",
        "description": "External timing capacitor C_X2 node for MONO2 (other side of C_X2). Connect C_X2 between pin 15 and pin 14."
      },
      {
        "number": "16",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply. Recommended operating range 3 V to 18 V (absolute max V_DD to V_SS = 20 V). External timing resistors R_X1 and R_X2 also connect to V_DD."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/cd4098b.pdf",
        "pages": 17,
        "sha256": "7e13a3425e4310ba",
        "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"
    },
    "logic": {
      "family_id": "CD4098",
      "logic_family": "CD4000",
      "function_code": "4098",
      "function_class": "Multivibrator",
      "function_name": "Dual Monostable Multivibrator",
      "manufacturer": "Texas Instruments",
      "is_specialty": false
    },
    "models_3d": [
      {
        "file": "cd4098.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          9.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cd4098-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          9.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "4c41c7bea8b158d609c2e5fcfb39e9c94150b98b02f08a69101bb28cbe7fcea5",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Type": "Dual retriggerable monostable (one-shot)",
      "Logic family": "4000B (CMOS)",
      "Timing": "External R and C set pulse width",
      "Features": "Retriggerable, resettable, both edges",
      "Supply voltage": "3 V to 18 V",
      "Operating temperature": "-55 C to 125 C"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "one-shot",
    "monostable",
    "pulse generator",
    "4000 series timer"
  ],
  "discovery_pitch": "Two one-shots that stretch a trigger edge into a timed pulse across a wide 3 V to 18 V supply.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cd4098.kicad_sym",
    "cd4098.kicad_mod",
    "cd4098.glb",
    "cd4098.step",
    "cd4098.lbr",
    "docs/hero.png",
    "docs/cd4098-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cd4098-etched.step"
  ],
  "variants": [
    {
      "mpn": "CD4098BE",
      "kind": "unknown"
    },
    {
      "mpn": "CD4098BF3A",
      "kind": "unknown"
    },
    {
      "mpn": "CD4098BM",
      "kind": "unknown"
    },
    {
      "mpn": "CD4098BM96",
      "kind": "unknown"
    },
    {
      "mpn": "CD4098BMT",
      "kind": "unknown"
    },
    {
      "mpn": "CD4098BPW",
      "kind": "unknown"
    },
    {
      "mpn": "CD4098BPWR",
      "kind": "unknown"
    }
  ]
}