main
Ray Set visibility: public 5d8635a 7d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "xd74ls42",
  "title": "XD74LS42",
  "brief": "XINLUDA Signal Switches, Multiplexers, Decoders, 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": [
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    "mpn": "XD74LS42",
    "manufacturer": "XINLUDA",
    "package": "DIP-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Signal Switches, Multiplexers, Decoders",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588915604422475776",
    "parts": {
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      "footprint": "xd74ls42.kicad_mod",
      "model_3d": "xd74ls42-hero.glb",
      "model_3d_plain": "xd74ls42-etched.glb",
      "model_3d_step": "xd74ls42-etched.step",
      "model_3d_step_plain": "xd74ls42.step",
      "lbr": "xd74ls42.lbr"
    },
    "distributor_links": {
      "lcsc": "C609757"
    },
    "distributor_check": {
      "checked_at": "2026-10-16T03:20:55Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
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    },
    "pins": [
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        "number": "1",
        "name": "0",
        "type": "output",
        "description": "Active-low decimal output 0, low only for BCD input 0000; IOL max 8 mA, IOH -400 µA."
      },
      {
        "number": "2",
        "name": "1",
        "type": "output",
        "description": "Active-low decimal output 1, low only for BCD input 0001; IOL max 8 mA, IOH -400 µA."
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      {
        "number": "3",
        "name": "2",
        "type": "output",
        "description": "Active-low decimal output 2, low only for BCD input 0010; IOL max 8 mA, IOH -400 µA."
      },
      {
        "number": "4",
        "name": "3",
        "type": "output",
        "description": "Active-low decimal output 3, low only for BCD input 0011; IOL max 8 mA, IOH -400 µA."
      },
      {
        "number": "5",
        "name": "4",
        "type": "output",
        "description": "Active-low decimal output 4, low only for BCD input 0100; IOL max 8 mA, IOH -400 µA."
      },
      {
        "number": "6",
        "name": "5",
        "type": "output",
        "description": "Active-low decimal output 5, low only for BCD input 0101; IOL max 8 mA, IOH -400 µA."
      },
      {
        "number": "7",
        "name": "6",
        "type": "output",
        "description": "Active-low decimal output 6, low only for BCD input 0110; IOL max 8 mA, IOH -400 µA."
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        "type": "output",
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        "description": "Active-low decimal output 9, low only for BCD input 1001; IOL max 8 mA, IOH -400 µA."
      },
      {
        "number": "12",
        "name": "D",
        "type": "input",
        "description": "BCD input D (weight 8, MSB), diode-clamped; VIH min 2 V, VIL max 0.8 V, max input voltage 7 V."
      },
      {
        "number": "13",
        "name": "C",
        "type": "input",
        "description": "BCD input C (weight 4), diode-clamped; VIH min 2 V, VIL max 0.8 V, max input voltage 7 V."
      },
      {
        "number": "14",
        "name": "B",
        "type": "input",
        "description": "BCD input B (weight 2), diode-clamped; VIH min 2 V, VIL max 0.8 V, max input voltage 7 V."
      },
      {
        "number": "15",
        "name": "A",
        "type": "input",
        "description": "BCD input A (weight 1, LSB), diode-clamped; VIH min 2 V, VIL max 0.8 V, max input voltage 7 V."
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        "number": "16",
        "name": "VCC",
        "type": "power_in",
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        "at": "2026-10-16T03:20:36"
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        "pages": 8,
        "sha256": "7013e2ac00e79456",
        "source_tier": "lcsc"
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      "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": "XINLUDA",
      "Package": "DIP-16",
      "Category": "Logic",
      "Pins": "16"
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          "conditions": "VCC = MIN, II = −18 mA",
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        {
          "name": "High-level output voltage",
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          "kind": "electrical",
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          "min": 2.7,
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          "conditions": "VCC = MIN, VIL = 0.8 V, VIH = 2 V, IOH = −400 μA",
          "source_page": 6,
          "source": "datasheet"
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          "name": "Low-level output voltage",
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          "max": 0.4,
          "conditions": "VCC = MIN, VIH = 2 V, VIL = VIL MAX, IOL = 4 mA",
          "source_page": 6,
          "source": "datasheet"
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          "name": "Low-level output voltage",
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          "min": null,
          "typ": 0.35,
          "max": 0.5,
          "conditions": "VCC = MIN, VIH = 2 V, VIL = VIL MAX, IOL = 8 mA",
          "source_page": 6,
          "source": "datasheet"
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          "name": "Input current at maximum input voltage",
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          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 0.1,
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          "source_page": 6,
          "source": "datasheet"
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          "source": "datasheet"
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          "source": "datasheet"
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          "typ": 10.4,
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          "conditions": "VCC = MAX, Output open, All inputs at 4.5V",
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          "source": "datasheet"
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          "conditions": "VCC = 5 V, TA = 25°C, CL = 15 pF, RL = 2 k",
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          "source_page": 7,
          "source": "datasheet"
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          "name": "Input voltage (74LS42)",
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  "author": {
    "name": "Ray",
    "email": "[email protected]"
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