MC74ACT139DTR2G

{
  "schema_version": 1,
  "type": "component",
  "slug": "mc74act139dtr2g",
  "title": "MC74ACT139DTR2G",
  "brief": "onsemi Signal Switches, Multiplexers, Decoders, TSSOP-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",
    "mc74act139dtr2g",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "MC74ACT139DTR2G",
    "manufacturer": "onsemi",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Signal Switches, Multiplexers, Decoders",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588928991575625728",
    "parts": {
      "symbol": "mc74act139dtr2g.kicad_sym",
      "footprint": "mc74act139dtr2g.kicad_mod",
      "model_3d": "mc74act139dtr2g-hero.glb",
      "model_3d_plain": "mc74act139dtr2g-etched.glb",
      "model_3d_step": "mc74act139dtr2g-etched.step",
      "model_3d_step_plain": "mc74act139dtr2g.step",
      "lbr": "mc74act139dtr2g.lbr"
    },
    "distributor_links": {
      "lcsc": "C903995",
      "digikey": "488-MC74ACT139DTR2GTR-ND",
      "mouser": "863-MC74ACT139DTR2G"
    },
    "distributor_check": {
      "checked_at": "2026-10-20T17:15:59Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "488-MC74ACT139DTR2GTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "863-MC74ACT139DTR2G",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Ea",
        "type": "input",
        "description": "Active-LOW enable for decoder a; when Ea is HIGH, all decoder a outputs (O0a to O3a) are forced HIGH."
      },
      {
        "number": "2",
        "name": "A0a",
        "type": "input",
        "description": "Binary-weighted address input A0 of decoder a; the ′ACT139 has TTL-compatible inputs."
      },
      {
        "number": "3",
        "name": "A1a",
        "type": "input",
        "description": "Binary-weighted address input A1 of decoder a; the ′ACT139 has TTL-compatible inputs."
      },
      {
        "number": "4",
        "name": "O0a",
        "type": "output",
        "description": "Active-LOW mutually exclusive output 0 of decoder a, rated to source/sink 24 mA."
      },
      {
        "number": "5",
        "name": "O1a",
        "type": "output",
        "description": "Active-LOW mutually exclusive output 1 of decoder a, rated to source/sink 24 mA."
      },
      {
        "number": "6",
        "name": "O2a",
        "type": "output",
        "description": "Active-LOW mutually exclusive output 2 of decoder a, rated to source/sink 24 mA."
      },
      {
        "number": "7",
        "name": "O3a",
        "type": "output",
        "description": "Active-LOW mutually exclusive output 3 of decoder a, rated to source/sink 24 mA."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference; all input and output voltages are specified referenced to GND."
      },
      {
        "number": "9",
        "name": "O3b",
        "type": "output",
        "description": "Active-LOW mutually exclusive output 3 of decoder b, rated to source/sink 24 mA."
      },
      {
        "number": "10",
        "name": "O2b",
        "type": "output",
        "description": "Active-LOW mutually exclusive output 2 of decoder b, rated to source/sink 24 mA."
      },
      {
        "number": "11",
        "name": "O1b",
        "type": "output",
        "description": "Active-LOW mutually exclusive output 1 of decoder b, rated to source/sink 24 mA."
      },
      {
        "number": "12",
        "name": "O0b",
        "type": "output",
        "description": "Active-LOW mutually exclusive output 0 of decoder b, rated to source/sink 24 mA."
      },
      {
        "number": "13",
        "name": "A1b",
        "type": "input",
        "description": "Binary-weighted address input A1 of decoder b; the ′ACT139 has TTL-compatible inputs."
      },
      {
        "number": "14",
        "name": "A0b",
        "type": "input",
        "description": "Binary-weighted address input A0 of decoder b; the ′ACT139 has TTL-compatible inputs."
      },
      {
        "number": "15",
        "name": "Eb",
        "type": "input",
        "description": "Active-LOW enable for decoder b; when Eb is HIGH, all decoder b outputs (O0b to O3b) are forced HIGH."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage: 2.0 V to 6.0 V for 74AC and 4.5 V to 5.5 V for 74ACT, with an absolute maximum of 7.0 V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pin-to-function mapping was read from the Figure 1 pinout drawing (16-Lead Packages, top view). ; The TSSOP-16 package drawing (CASE 948F) gives only a generic marking and no pin-function listing. T"
        ],
        "pages_sent": 9,
        "cost_usd": 0.0661,
        "at": "2026-10-20T17:14:00"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588928991575625728",
        "pages": 9,
        "sha256": "db95a88f1355cf30",
        "source_tier": "lcsc"
      },
      "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"
    },
    "models_3d": [
      {
        "file": "mc74act139dtr2g.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "6ad5e98224d02a427d9a6b929a28dbc158b9925fba5adec12db05079f1016948",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mc74act139dtr2g-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "04c5d23c290d426553498f73fb0a97964993df60e58f9227e4380d9e86d67aed",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "TSSOP-16",
      "Category": "Logic",
      "Pins": "16"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "db95a88f1355cf301f3834fd42461787f353b0cb0cf005e45ea598a512c8f11f",
      "rows": [
        {
          "name": "Supply Voltage ′ACT",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.5,
          "typ": 5,
          "max": 5.5,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC Input Voltage, Output Voltage (Ref. to GND)",
          "symbol": "VIN, VOUT",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "Ref. to GND; upper limit printed as VCC",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Rise and Fall Time ′ACT devices except Schmitt inputs",
          "symbol": "tr, tf",
          "kind": "timing",
          "unit": "ns/V",
          "min": null,
          "typ": 10,
          "max": null,
          "conditions": "VCC @ 4.5 V; VIN from 0.8 V to 2.0 V (Note 2)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Rise and Fall Time ′ACT devices except Schmitt inputs",
          "symbol": "tr, tf",
          "kind": "timing",
          "unit": "ns/V",
          "min": null,
          "typ": 8,
          "max": null,
          "conditions": "VCC @ 5.5 V; VIN from 0.8 V to 2.0 V (Note 2)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature (PDIP)",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 140,
          "conditions": "PDIP package as printed",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating Ambient Temperature Range",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": 25,
          "max": 85,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Current − High",
          "symbol": "IOH",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": -24,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Current − Low",
          "symbol": "IOL",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 24,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC Supply Voltage",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC Input Voltage",
          "symbol": "VI",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": null,
          "conditions": "Upper limit printed as VCC + 0.5",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC Output Voltage (Note 1)",
          "symbol": "VO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": null,
          "conditions": "Upper limit printed as VCC + 0.5; IO absolute maximum must be observed",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC Input Diode Current",
          "symbol": "IIK",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC Output Diode Current",
          "symbol": "IOK",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC Output Sink/Source Current",
          "symbol": "IO",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC Supply Current per Output Pin",
          "symbol": "ICC",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC Ground Current per Output Pin",
          "symbol": "IGND",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 50,
          "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": "Lead Temperature",
          "symbol": "TL",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "1 mm from case for 10 seconds",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature under Bias",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance (JA)",
          "symbol": "JA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 103.8,
          "max": null,
          "conditions": "TSSOP package; calculated per JESD51-7 (Note 2)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation in Still Air at 65°C",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "TSSOP package; still air at 65°C (Note 3)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "ESD Withstand Voltage (Human Body Model)",
          "symbol": "VESD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": 2000,
          "typ": null,
          "max": null,
          "conditions": "Human Body Model (Note 4); printed as > 2000",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "ESD Withstand Voltage (Machine Model)",
          "symbol": "VESD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": 200,
          "typ": null,
          "max": null,
          "conditions": "Machine Model (Note 5); printed as > 200",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "ESD Withstand Voltage (Charged Device Model)",
          "symbol": "VESD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": 1000,
          "typ": null,
          "max": null,
          "conditions": "Charged Device Model (Note 6); printed as > 1000",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Latch-Up Performance",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "Above VCC and below GND at 85°C (Note 7)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input High Level Voltage (Minimum High Level Input Voltage)",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": 1.5,
          "max": null,
          "conditions": "VCC = 4.5 V; VOUT = 0.1 V or VCC − 0.1 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Maximum Low Level Input Voltage",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.5,
          "max": 0.8,
          "conditions": "VCC = 4.5 V; VOUT = 0.1 V or VCC − 0.1 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Minimum High Level Output Voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 4.4,
          "typ": 4.49,
          "max": null,
          "conditions": "VCC = 4.5 V; IOUT = −50 µA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Minimum High Level Output Voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 5.4,
          "typ": 5.49,
          "max": null,
          "conditions": "VCC = 5.5 V; IOUT = −50 µA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Minimum High Level Output Voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 3.76,
          "typ": null,
          "max": null,
          "conditions": "VCC = 4.5 V; VIN = VIL or VIH; IOH = −24 mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Minimum High Level Output Voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 4.76,
          "typ": null,
          "max": null,
          "conditions": "VCC = 5.5 V; VIN = VIL or VIH; IOH = −24 mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Maximum Low Level Output Voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.001,
          "max": 0.1,
          "conditions": "VCC = 4.5 V; IOUT = 50 µA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Maximum Low Level Output Voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.44,
          "conditions": "VCC = 4.5 V; VIN = VIL or VIH; IOL = 24 mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Maximum Input Leakage Current",
          "symbol": "IIN",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "VI = VCC, GND",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Additional Max. ICC/Input",
          "symbol": "ICCT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.6,
          "max": 1.5,
          "conditions": "VCC = 5.5 V; VI = VCC − 2.1 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Minimum Dynamic Output Current",
          "symbol": "IOLD",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 75,
          "conditions": "VCC = 5.5 V; VOLD = 1.65 V Max",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Minimum Dynamic Output Current",
          "symbol": "IOHD",
          "kind": "electrical",
          "unit": "mA",
          "min": -75,
          "typ": null,
          "max": null,
          "conditions": "VCC = 5.5 V; VOHD = 3.85 V Min",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Maximum Quiescent Supply Current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 80,
          "conditions": "VCC = 5.5 V; VIN = VCC or GND",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Propagation Delay An to On (tPLH)",
          "symbol": "tPLH",
          "kind": "timing",
          "unit": "ns",
          "min": 1.5,
          "typ": 6,
          "max": 9.5,
          "conditions": "VCC = 5.0 V; CL = 50 pF; Fig. 3−6",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Propagation Delay An to On (tPHL)",
          "symbol": "tPHL",
          "kind": "timing",
          "unit": "ns",
          "min": 1.5,
          "typ": 6,
          "max": 10.5,
          "conditions": "VCC = 5.0 V; CL = 50 pF; Fig. 3−6",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Propagation Delay En to On (tPLH)",
          "symbol": "tPLH",
          "kind": "timing",
          "unit": "ns",
          "min": 2,
          "typ": 7,
          "max": 11,
          "conditions": "VCC = 5.0 V; CL = 50 pF; Fig. 3−6",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Propagation Delay En to On (tPHL)",
          "symbol": "tPHL",
          "kind": "timing",
          "unit": "ns",
          "min": 1.5,
          "typ": 7,
          "max": 10.5,
          "conditions": "VCC = 5.0 V; CL = 50 pF; Fig. 3−6",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "mc74act139dtr2g"
  ],
  "discovery_pitch": "MC74ACT139DTR2G (onsemi) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "mc74act139dtr2g.kicad_sym",
    "mc74act139dtr2g.kicad_mod",
    "mc74act139dtr2g.glb",
    "mc74act139dtr2g.step",
    "mc74act139dtr2g.lbr",
    "docs/hero.png",
    "docs/mc74act139dtr2g-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "mc74act139dtr2g-hero.glb",
    "mc74act139dtr2g-hero.overlay.json",
    "mc74act139dtr2g-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}