MC14538BDR2G

{
  "schema_version": 1,
  "type": "component",
  "slug": "mc14538bdr2g",
  "title": "MC14538BDR2G",
  "brief": "onsemi Monostable Multivibrators, SOIC-16. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "logic",
    "mc14538bdr2g"
  ],
  "component": {
    "mpn": "MC14538BDR2G",
    "manufacturer": "onsemi",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Monostable Multivibrators",
    "datasheet": "https://www.onsemi.com/pdf/datasheet/mc14538b-d.pdf",
    "parts": {
      "symbol": "mc14538bdr2g.kicad_sym",
      "footprint": "mc14538bdr2g.kicad_mod",
      "model_3d": "mc14538bdr2g-etched.glb",
      "model_3d_plain": "mc14538bdr2g.glb",
      "model_3d_step": "mc14538bdr2g-etched.step",
      "model_3d_step_plain": "mc14538bdr2g.step",
      "lbr": "mc14538bdr2g.lbr"
    },
    "distributor_links": {
      "lcsc": "C57398"
    },
    "pins": [
      {
        "number": "1",
        "name": "C_X_A",
        "type": "passive",
        "description": "Timing capacitor connection for monostable A. External timing capacitor Cx connects between this pin (C_X) and R_X/C_X."
      },
      {
        "number": "2",
        "name": "R_X/C_X_A",
        "type": "passive",
        "description": "Timing resistor/capacitor common node for monostable A. External timing resistor Rx connects between VDD and this pin; timing capacitor Cx connects between this pin and C_X."
      },
      {
        "number": "3",
        "name": "RESET_A",
        "type": "input",
        "description": "Active-low reset input for monostable A. A low level forces Q low and Q-bar high independent of the input trigger state."
      },
      {
        "number": "4",
        "name": "A_A",
        "type": "input",
        "description": "Trigger input A of monostable A (leading-edge / negative-transition trigger input). Triggers the one-shot on the falling edge when B is high and Reset is high."
      },
      {
        "number": "5",
        "name": "B_A",
        "type": "input",
        "description": "Trigger input B of monostable A (trailing-edge / positive-transition trigger input). Triggers the one-shot on the rising edge when A is low and Reset is high."
      },
      {
        "number": "6",
        "name": "Q_A",
        "type": "output",
        "description": "True output of monostable A. Goes high for the programmed pulse width Tx ≈ RxCx after a valid trigger."
      },
      {
        "number": "7",
        "name": "Q_A_BAR",
        "type": "output",
        "description": "Complement (inverted) output of monostable A. Goes low for the programmed pulse width after a valid trigger."
      },
      {
        "number": "8",
        "name": "VSS",
        "type": "power_in",
        "description": "Negative supply / ground reference (0 V). Supply range VDD-VSS = 3.0 to 18 V."
      },
      {
        "number": "9",
        "name": "Q_B_BAR",
        "type": "output",
        "description": "Complement (inverted) output of monostable B. Goes low for the programmed pulse width after a valid trigger."
      },
      {
        "number": "10",
        "name": "Q_B",
        "type": "output",
        "description": "True output of monostable B. Goes high for the programmed pulse width Tx ≈ RxCx after a valid trigger."
      },
      {
        "number": "11",
        "name": "B_B",
        "type": "input",
        "description": "Trigger input B of monostable B (trailing-edge / positive-transition trigger input). Triggers the one-shot on the rising edge when A is low and Reset is high."
      },
      {
        "number": "12",
        "name": "A_B",
        "type": "input",
        "description": "Trigger input A of monostable B (leading-edge / negative-transition trigger input). Triggers the one-shot on the falling edge when B is high and Reset is high."
      },
      {
        "number": "13",
        "name": "RESET_B",
        "type": "input",
        "description": "Active-low reset input for monostable B. A low level forces Q low and Q-bar high independent of the input trigger state."
      },
      {
        "number": "14",
        "name": "R_X/C_X_B",
        "type": "passive",
        "description": "Timing resistor/capacitor common node for monostable B. External Rx connects between VDD and this pin; external Cx connects between this pin and C_X."
      },
      {
        "number": "15",
        "name": "C_X_B",
        "type": "passive",
        "description": "Timing capacitor connection for monostable B. External Cx connects between this pin and R_X/C_X."
      },
      {
        "number": "16",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply voltage. Operating range 3.0 V to 18 V (VDD referenced to VSS)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.onsemi.com/pdf/datasheet/mc14538b-d.pdf",
        "pages": 13,
        "sha256": "84c2dbf8f6667537",
        "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -4.445
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-16_3.9x9.9mm_P1.27mm@sha256:f9b5075740f7816c",
      "mark": "drawn"
    },
    "logic": {
      "family_id": "CD4538",
      "logic_family": "CD4000",
      "function_code": "4538",
      "function_class": "Multivibrator",
      "function_name": "Dual Precision Monostable Multivibrator",
      "manufacturer": "Onsemi (Motorola legacy)",
      "is_specialty": false
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "SOIC-16",
      "Category": "Logic",
      "Pins": "16"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "mc14538bdr2g"
  ],
  "discovery_pitch": "MC14538BDR2G (onsemi) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "mc14538bdr2g.kicad_sym",
    "mc14538bdr2g.kicad_mod",
    "mc14538bdr2g.glb",
    "mc14538bdr2g.step",
    "mc14538bdr2g-etched.step",
    "mc14538bdr2g.lbr",
    "docs/hero.png",
    "docs/mc14538bdr2g-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "MC14538BDR2G",
      "kind": "packaging"
    },
    {
      "mpn": "MC14538BDR2GDG",
      "kind": "packaging"
    },
    {
      "mpn": "MC14538BDR2GPG",
      "kind": "packaging"
    },
    {
      "mpn": "MC14538BDR2GDTR2G",
      "kind": "packaging"
    },
    {
      "mpn": "MC14538BDR2GDTG",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-28T18:43:56.082Z"
}