74hc138b

{
  "slug": "74hc138b",
  "version": "0.1.0",
  "type": "component",
  "description": "Shenzhen Fuman Signal Switches / Encoders & Decoders / Multiplexers, SOP-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "74hc138b"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "74hc138b.kicad_sym",
    "74hc138b.kicad_mod",
    "74hc138b.glb",
    "74hc138b.step",
    "74hc138b.lbr",
    "docs/hero.png",
    "docs/74hc138b-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "74hc138b-etched.step"
  ],
  "visibility": {
    "public": true
  },
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "component": {
    "logic": {
      "family_id": "74HC138",
      "logic_family": "74HC",
      "function_code": "138",
      "function_class": "Decoder",
      "function_name": "3-to-8 Line Decoder/Demultiplexer",
      "manufacturer": null,
      "is_specialty": false
    },
    "parts": {
      "model_3d_step": "74hc138b-etched.step",
      "model_3d_step_plain": "74hc138b.step",
      "model_3d": "74hc138b-etched.glb",
      "model_3d_plain": "74hc138b.glb"
    },
    "models_3d": [
      {
        "file": "74hc138b.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          9.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74hc138b-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          9.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d3c9edbf7ada18c11696efc4fafeabdaca946a6db6f2985e9e5d04166b0725cf",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}