SN74HC145N

{
  "slug": "sn74hc145n",
  "version": "0.1.0",
  "type": "component",
  "description": "lingxingic Signal Switches, Multiplexers, Decoders, DIP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "sn74hc145n",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn74hc145n.kicad_sym",
    "sn74hc145n.kicad_mod",
    "sn74hc145n.glb",
    "sn74hc145n.step",
    "sn74hc145n.lbr",
    "docs/hero.png",
    "docs/sn74hc145n-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sn74hc145n-hero.glb",
    "sn74hc145n-hero.overlay.json",
    "sn74hc145n-etched.glb"
  ],
  "component": {
    "mpn": "SN74HC145N",
    "manufacturer": "lingxingic",
    "package": "DIP-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Signal Switches, Multiplexers, Decoders",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603323103724384256",
    "parts": {
      "symbol": "sn74hc145n.kicad_sym",
      "footprint": "sn74hc145n.kicad_mod",
      "model_3d": "sn74hc145n-hero.glb",
      "model_3d_plain": "sn74hc145n-etched.glb",
      "model_3d_step": "sn74hc145n-etched.step",
      "model_3d_step_plain": "sn74hc145n.step",
      "lbr": "sn74hc145n.lbr"
    },
    "distributor_links": {
      "lcsc": "C22436654"
    },
    "distributor_check": {
      "checked_at": "2026-10-15T17:13:15Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Q0",
        "type": "output",
        "description": "Decoded data output Q0, which the function table drives LOW only when the BCD code DCBA = 0000 is applied and HIGH otherwise."
      },
      {
        "number": "2",
        "name": "Q1",
        "type": "output",
        "description": "Decoded data output Q1, which the function table drives LOW only when the BCD code DCBA = 0001 is applied and HIGH otherwise."
      },
      {
        "number": "3",
        "name": "Q2",
        "type": "output",
        "description": "Decoded data output Q2, which the function table drives LOW only when the BCD code DCBA = 0010 is applied and HIGH otherwise."
      },
      {
        "number": "4",
        "name": "Q3",
        "type": "output",
        "description": "Decoded data output Q3, which the function table drives LOW only when the BCD code DCBA = 0011 is applied and HIGH otherwise."
      },
      {
        "number": "5",
        "name": "Q4",
        "type": "output",
        "description": "Decoded data output Q4, which the function table drives LOW only when the BCD code DCBA = 0100 is applied and HIGH otherwise."
      },
      {
        "number": "6",
        "name": "Q5",
        "type": "output",
        "description": "Decoded data output Q5, which the function table drives LOW only when the BCD code DCBA = 0101 is applied and HIGH otherwise."
      },
      {
        "number": "7",
        "name": "Q6",
        "type": "output",
        "description": "Decoded data output Q6, which the function table drives LOW only when the BCD code DCBA = 0110 is applied and HIGH otherwise."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (0 V); all voltages are referenced to this pin."
      },
      {
        "number": "9",
        "name": "Q7",
        "type": "output",
        "description": "Decoded data output Q7, which the function table drives LOW only when the BCD code DCBA = 0111 is applied and HIGH otherwise."
      },
      {
        "number": "10",
        "name": "Q8",
        "type": "output",
        "description": "Decoded data output Q8, which the function table drives LOW only when the BCD code DCBA = 1000 is applied and HIGH otherwise."
      },
      {
        "number": "11",
        "name": "Q9",
        "type": "output",
        "description": "Decoded data output Q9, which the function table drives LOW only when the BCD code DCBA = 1001 is applied and HIGH otherwise."
      },
      {
        "number": "12",
        "name": "D",
        "type": "input",
        "description": "BCD data input D (most significant bit), with input levels between 0 V and VCC."
      },
      {
        "number": "13",
        "name": "C",
        "type": "input",
        "description": "BCD data input C, with input levels between 0 V and VCC."
      },
      {
        "number": "14",
        "name": "B",
        "type": "input",
        "description": "BCD data input B, with input levels between 0 V and VCC."
      },
      {
        "number": "15",
        "name": "A",
        "type": "input",
        "description": "BCD data input A (least significant bit), with input levels between 0 V and VCC."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage: 2.0 V to 6.0 V for SN74HC145 and 4.5 V to 5.5 V for SN74HCT145 per the recommended operating conditions."
      }
    ],
    "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: Pin numbers and names are taken from the Pin Description table (page 6). The Pin Configurations draw; The datasheet gives only 'data output' and 'data input' as pin functions. The active-LOW decode beha; The datasheet specifies no pin type for D, C, B, A or Q0-Q9 beyond the function names; types are ass"
        ],
        "pages_sent": 15,
        "cost_usd": 0.0524,
        "at": "2026-10-15T17:12:55"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603323103724384256",
        "pages": 15,
        "sha256": "936ea512588bedb8",
        "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": "sn74hc145n.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          19.177,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "17a30b1f0ab3fd5384a1231e3c63c394888d5b952c542a8c189e023ed3467464",
        "checked": "2026-10-15",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn74hc145n-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          19.177,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "e8ec0e9bdefdb01af5cbfe3bd80538454f1c74ab6111053a73ad41857efff47e",
        "checked": "2026-10-15",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}