MC74ACT138DTR2G

{
  "slug": "mc74act138dtr2g",
  "version": "0.1.0",
  "type": "component",
  "description": "onsemi Signal Switches, Multiplexers, Decoders, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "mc74act138dtr2g",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "mc74act138dtr2g.kicad_sym",
    "mc74act138dtr2g.kicad_mod",
    "mc74act138dtr2g.glb",
    "mc74act138dtr2g.step",
    "mc74act138dtr2g.lbr",
    "docs/hero.png",
    "docs/mc74act138dtr2g-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "mc74act138dtr2g-hero.glb",
    "mc74act138dtr2g-hero.overlay.json",
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  "component": {
    "mpn": "MC74ACT138DTR2G",
    "manufacturer": "onsemi",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Signal Switches, Multiplexers, Decoders",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/e79b12fb99239e91095c40267b4af7be.pdf",
    "parts": {
      "symbol": "mc74act138dtr2g.kicad_sym",
      "footprint": "mc74act138dtr2g.kicad_mod",
      "model_3d": "mc74act138dtr2g-hero.glb",
      "model_3d_plain": "mc74act138dtr2g-etched.glb",
      "model_3d_step": "mc74act138dtr2g-etched.step",
      "model_3d_step_plain": "mc74act138dtr2g.step",
      "lbr": "mc74act138dtr2g.lbr"
    },
    "distributor_links": {
      "lcsc": "C903993",
      "digikey": "MC74ACT138DTR2GOSTR-ND",
      "mouser": "863-MC74ACT138DTR2G"
    },
    "distributor_check": {
      "checked_at": "2026-10-20T22:47:12Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "MC74ACT138DTR2GOSTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "863-MC74ACT138DTR2G",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "A0",
        "type": "input",
        "description": "Address input (LSB) of the three binary-weighted address inputs A0-A2 that select one of eight active-LOW outputs."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "input",
        "description": "Address input of the three binary-weighted address inputs A0-A2 that select one of eight active-LOW outputs."
      },
      {
        "number": "3",
        "name": "A2",
        "type": "input",
        "description": "Address input (MSB) of the three binary-weighted address inputs A0-A2 that select one of eight active-LOW outputs."
      },
      {
        "number": "4",
        "name": "E1",
        "type": "input",
        "description": "Active-LOW enable input; outputs are all HIGH unless E1 and E2 are LOW and E3 is HIGH, and unused enables must be tied permanently to their active state."
      },
      {
        "number": "5",
        "name": "E2",
        "type": "input",
        "description": "Active-LOW enable input; outputs are all HIGH unless E1 and E2 are LOW and E3 is HIGH, and unused enables must be tied permanently to their active state."
      },
      {
        "number": "6",
        "name": "E3",
        "type": "input",
        "description": "Active-HIGH enable input; outputs are all HIGH unless E1 and E2 are LOW and E3 is HIGH, and unused enables must be tied permanently to their active state."
      },
      {
        "number": "7",
        "name": "O7",
        "type": "output",
        "description": "Active-LOW output 7, which sources or sinks 24 mA and is HIGH unless the device is enabled and address 111 is selected."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin, the 0 V reference for the device."
      },
      {
        "number": "9",
        "name": "O6",
        "type": "output",
        "description": "Active-LOW output 6, which sources or sinks 24 mA and is LOW only when the device is enabled and address 110 is selected."
      },
      {
        "number": "10",
        "name": "O5",
        "type": "output",
        "description": "Active-LOW output 5, which sources or sinks 24 mA and is LOW only when the device is enabled and address 101 is selected."
      },
      {
        "number": "11",
        "name": "O4",
        "type": "output",
        "description": "Active-LOW output 4, which sources or sinks 24 mA and is LOW only when the device is enabled and address 100 is selected."
      },
      {
        "number": "12",
        "name": "O3",
        "type": "output",
        "description": "Active-LOW output 3, which sources or sinks 24 mA and is LOW only when the device is enabled and address 011 is selected."
      },
      {
        "number": "13",
        "name": "O2",
        "type": "output",
        "description": "Active-LOW output 2, which sources or sinks 24 mA and is LOW only when the device is enabled and address 010 is selected."
      },
      {
        "number": "14",
        "name": "O1",
        "type": "output",
        "description": "Active-LOW output 1, which sources or sinks 24 mA and is LOW only when the device is enabled and address 001 is selected."
      },
      {
        "number": "15",
        "name": "O0",
        "type": "output",
        "description": "Active-LOW output 0, which sources or sinks 24 mA and is LOW only when the device is enabled and address 000 is selected."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply pin; the recommended ACT supply range is 4.5 V to 5.5 V and the absolute maximum is -0.5 V to +7.0 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": "vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin names were read from the page-1 pinout figure, which is a scanned image with overbars. Active-lo; The datasheet gives a single 16-lead pinout (Figure 1) for both the SOIC-16 and TSSOP-16 packages. T; The datasheet gives no per-pin voltage or current limits beyond the general Maximum Ratings (VI -0.5",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 10,
        "cost_usd": 0.1293,
        "at": "2026-10-20T22:46:51"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/e79b12fb99239e91095c40267b4af7be.pdf",
        "pages": 10,
        "sha256": "4f262d32e351cc56",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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      "footprint": "viewers/footprint.html"
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        "role": "plain",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
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        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
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        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "sha256": "e66ef0e285ff50275d46d3685b80b3a1ac2e0e2aa49f90a4d47c2e28b0227256",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}