TC4538BP

{
  "schema_version": 1,
  "type": "component",
  "slug": "tc4538bp",
  "title": "TC4538BP",
  "brief": "TOSHIBA Monostable Multivibrators, DIP-16. 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",
    "logic ics",
    "tc4538bp",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "TC4538BP",
    "manufacturer": "TOSHIBA",
    "package": "DIP-16",
    "pin_count": 16,
    "category": "Logic ICs",
    "subcategory": "Monostable Multivibrators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/ab661ee68cfa9636b5a9abdef40b3b75.pdf",
    "parts": {
      "symbol": "tc4538bp.kicad_sym",
      "footprint": "tc4538bp.kicad_mod",
      "model_3d": "tc4538bp-hero.glb",
      "model_3d_plain": "tc4538bp-etched.glb",
      "model_3d_step": "tc4538bp-etched.step",
      "model_3d_step_plain": "tc4538bp.step",
      "lbr": "tc4538bp.lbr"
    },
    "distributor_links": {
      "lcsc": "C7360584"
    },
    "distributor_check": {
      "checked_at": "2026-10-24T00:13:21Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1T1",
        "type": "passive",
        "description": "Circuit 1 timing node T1 for the external capacitor CX, which sets the output pulse width with RX (RX 5 kΩ to 1000 kΩ)."
      },
      {
        "number": "2",
        "name": "1T2",
        "type": "passive",
        "description": "Circuit 1 timing node T2 where external RX and CX connect, with pulse width twOUT = CX·RX."
      },
      {
        "number": "3",
        "name": "1CD",
        "type": "input",
        "description": "Circuit 1 active-low clear/reset input that forces Q low and Q̅ high when low, and is tied to GND if the circuit is unused."
      },
      {
        "number": "4",
        "name": "1A",
        "type": "input",
        "description": "Circuit 1 trigger input A that triggers on the rising edge when 1B is high."
      },
      {
        "number": "5",
        "name": "1B",
        "type": "input",
        "description": "Circuit 1 trigger input B that triggers on the falling edge when 1A is low."
      },
      {
        "number": "6",
        "name": "1Q",
        "type": "output",
        "description": "Circuit 1 non-inverted monostable pulse output, left open if unused."
      },
      {
        "number": "7",
        "name": "1Q̅",
        "type": "output",
        "description": "Circuit 1 inverted monostable pulse output, left open if unused."
      },
      {
        "number": "8",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground supply pin (VSS = 0 V)."
      },
      {
        "number": "9",
        "name": "2Q̅",
        "type": "output",
        "description": "Circuit 2 inverted monostable pulse output, left open if unused."
      },
      {
        "number": "10",
        "name": "2Q",
        "type": "output",
        "description": "Circuit 2 non-inverted monostable pulse output, left open if unused."
      },
      {
        "number": "11",
        "name": "2B",
        "type": "input",
        "description": "Circuit 2 trigger input B that triggers on the falling edge when 2A is low."
      },
      {
        "number": "12",
        "name": "2A",
        "type": "input",
        "description": "Circuit 2 trigger input A that triggers on the rising edge when 2B is high."
      },
      {
        "number": "13",
        "name": "2CD",
        "type": "input",
        "description": "Circuit 2 active-low clear/reset input that forces Q low and Q̅ high when low, and is tied to GND if the circuit is unused."
      },
      {
        "number": "14",
        "name": "2T2",
        "type": "passive",
        "description": "Circuit 2 timing node T2 where external RX and CX connect, with pulse width twOUT = CX·RX."
      },
      {
        "number": "15",
        "name": "2T1",
        "type": "passive",
        "description": "Circuit 2 timing node T1 for the external capacitor CX, which sets the output pulse width with RX (RX 5 kΩ to 1000 kΩ)."
      },
      {
        "number": "16",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply voltage, operating range 3 V to 18 V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: T1/T2 are typed passive because they are external RC timing nodes. The datasheet does not give an ER",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 9,
        "cost_usd": 0.3162,
        "at": "2026-10-24T00:13:01"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/ab661ee68cfa9636b5a9abdef40b3b75.pdf",
        "pages": 9,
        "sha256": "007470710fa1f1c2",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "TOSHIBA",
      "Package": "DIP-16",
      "Category": "Logic ICs",
      "Pins": "16"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "007470710fa1f1c20ade7af6f7310463973473e011678bf987637fdef1289643",
      "rows": [
        {
          "name": "DC supply voltage",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3,
          "typ": null,
          "max": 18,
          "conditions": "VSS = 0 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input voltage",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "VSS = 0 V; max = VDD",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "External resistance",
          "symbol": "RX",
          "kind": "recommended_operating",
          "unit": "kΩ",
          "min": 5,
          "typ": null,
          "max": 1000,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC supply voltage (abs max)",
          "symbol": "VDD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "VSS − 0.5 to VSS + 20",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input voltage (abs max)",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": null,
          "conditions": "VSS − 0.5 to VDD + 0.5",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output voltage (abs max)",
          "symbol": "VOUT",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": null,
          "conditions": "VSS − 0.5 to VDD + 0.5",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC input current",
          "symbol": "IIN",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -10,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "DIP",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature range",
          "symbol": "Topr",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "High-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 4.95,
          "typ": 5,
          "max": null,
          "conditions": "|IOUT|<1 µA, VIN=VSS,VDD; VDD=5 V; 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 9.95,
          "typ": 10,
          "max": null,
          "conditions": "|IOUT|<1 µA, VIN=VSS,VDD; VDD=10 V; 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 14.95,
          "typ": 15,
          "max": null,
          "conditions": "|IOUT|<1 µA, VIN=VSS,VDD; VDD=15 V; 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Low-level output voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0,
          "max": 0.05,
          "conditions": "|IOUT|<1 µA, VIN=VSS,VDD; VDD=5/10/15 V; 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input leakage current high",
          "symbol": "IIH",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "VIH = 18 V, VDD=18 V; -40°C and 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input leakage current low",
          "symbol": "IIL",
          "kind": "electrical",
          "unit": "µA",
          "min": -0.1,
          "typ": null,
          "max": null,
          "conditions": "VIL = 0 V, VDD=18 V; -40°C and 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent supply current",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.005,
          "max": 5,
          "conditions": "VIN=VSS,VDD; VDD=5 V; 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent supply current",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.01,
          "max": 10,
          "conditions": "VIN=VSS,VDD; VDD=10 V; 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent supply current",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.015,
          "max": 20,
          "conditions": "VIN=VSS,VDD; VDD=15 V; 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output transition time (low to high)",
          "symbol": "tTLH",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 50,
          "max": 100,
          "conditions": "VDD=10 V, Ta=25°C, CL=50 pF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output transition time (high to low)",
          "symbol": "tTHL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 50,
          "max": 100,
          "conditions": "VDD=10 V, Ta=25°C, CL=50 pF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay (A, B to Q)",
          "symbol": "tpLH/tpHL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 150,
          "max": 300,
          "conditions": "VDD=10 V, Ta=25°C, CL=50 pF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay (CD to Q)",
          "symbol": "tpLH/tpHL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 110,
          "max": 250,
          "conditions": "VDD=10 V, Ta=25°C, CL=50 pF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Min input pulse width (A, B)",
          "symbol": "tWH/tWL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 30,
          "max": 60,
          "conditions": "VDD=10 V, Ta=25°C, CL=50 pF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Min pulse width (CD)",
          "symbol": "tWL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 45,
          "max": 90,
          "conditions": "VDD=10 V, Ta=25°C, CL=50 pF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output pulse width",
          "symbol": "twOUT",
          "kind": "timing",
          "unit": "ms",
          "min": 9.5,
          "typ": 10,
          "max": 10.5,
          "conditions": "RX=100 kΩ, CX=0.1 µF, VDD=10 V, Ta=25°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output pulse width",
          "symbol": "twOUT",
          "kind": "timing",
          "unit": "ms",
          "min": 9.3,
          "typ": 9.95,
          "max": 10.4,
          "conditions": "RX=100 kΩ, CX=0.1 µF, VDD=5 V, Ta=25°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output pulse width",
          "symbol": "twOUT",
          "kind": "timing",
          "unit": "ms",
          "min": 9.55,
          "typ": 10.05,
          "max": 10.65,
          "conditions": "RX=100 kΩ, CX=0.1 µF, VDD=15 V, Ta=25°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input capacitance",
          "symbol": "CIN",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 5,
          "max": 7.5,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Pulse width match between circuits",
          "symbol": "ΔtwOUT",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "VDD=5/10/15 V, typ ±1",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_triggers": [
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  "discovery_pitch": "TC4538BP (TOSHIBA) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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