SIT1145AQTK

{
  "slug": "sit1145aqtk",
  "version": "0.1.0",
  "type": "component",
  "description": "SIT CAN Transceivers, DFN-14(3x4.5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface",
    "sit1145aqtk",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sit1145aqtk.kicad_sym",
    "sit1145aqtk.kicad_mod",
    "sit1145aqtk.glb",
    "sit1145aqtk.step",
    "sit1145aqtk.lbr",
    "docs/hero.png",
    "docs/sit1145aqtk-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sit1145aqtk-hero.glb",
    "sit1145aqtk-hero.overlay.json",
    "sit1145aqtk-etched.glb"
  ],
  "component": {
    "mpn": "SIT1145AQTK",
    "manufacturer": "SIT",
    "package": "DFN-14(3x4.5)",
    "pin_count": 15,
    "category": "Interface",
    "subcategory": "CAN Transceivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590902597878697984",
    "parts": {
      "symbol": "sit1145aqtk.kicad_sym",
      "footprint": "sit1145aqtk.kicad_mod",
      "model_3d": "sit1145aqtk-hero.glb",
      "model_3d_plain": "sit1145aqtk-etched.glb",
      "model_3d_step": "sit1145aqtk-etched.step",
      "model_3d_step_plain": "sit1145aqtk.step",
      "lbr": "sit1145aqtk.lbr"
    },
    "distributor_links": {
      "lcsc": "C5382540"
    },
    "distributor_check": {
      "checked_at": "2026-10-20T10:48:32Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "TXD",
        "type": "input",
        "description": "Transmitter data input from the MCU, referenced to VIO (-0.2 V to VIO+0.2 V); a dominant timeout disables the transmitter if held low too long."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "3",
        "name": "VCC",
        "type": "power_in",
        "description": "5 V CAN bus supply, 4.5 V to 5.5 V recommended, absolute maximum -0.2 V to +6 V."
      },
      {
        "number": "4",
        "name": "RXD",
        "type": "output",
        "description": "Receiver data output to the MCU, referenced to VIO (-0.2 V to VIO+0.2 V)."
      },
      {
        "number": "5",
        "name": "VIO",
        "type": "power_in",
        "description": "I/O supply for the MCU-side interface, 2.85 V to 5.5 V, supporting 3.3 V/5 V MCUs."
      },
      {
        "number": "6",
        "name": "SDO",
        "type": "output",
        "description": "SPI data output, referenced to VIO (-0.2 V to VIO+0.2 V)."
      },
      {
        "number": "7",
        "name": "INH",
        "type": "output",
        "description": "Inhibit output switch that controls an external voltage regulator, rated -0.2 V to +40 V."
      },
      {
        "number": "8",
        "name": "SCK",
        "type": "input",
        "description": "SPI clock input, referenced to VIO (-0.2 V to VIO+0.2 V)."
      },
      {
        "number": "9",
        "name": "WAKE",
        "type": "input",
        "description": "Local wake-up input, rated -0.2 V to +40 V; connect to GND if local wake-up is unused."
      },
      {
        "number": "10",
        "name": "BAT",
        "type": "power_in",
        "description": "Battery supply input, 5.5 V to 28 V recommended, absolute maximum -0.2 V to +40 V."
      },
      {
        "number": "11",
        "name": "SDI",
        "type": "input",
        "description": "SPI data input, referenced to VIO (-0.2 V to VIO+0.2 V)."
      },
      {
        "number": "12",
        "name": "CANL",
        "type": "bidirectional",
        "description": "Low-level CAN bus input/output, rated -58 V to +58 V."
      },
      {
        "number": "13",
        "name": "CANH",
        "type": "bidirectional",
        "description": "High-level CAN bus input/output, rated -58 V to +58 V."
      },
      {
        "number": "14",
        "name": "SCSN",
        "type": "input",
        "description": "SPI chip select input (active low), referenced to VIO (-0.2 V to VIO+0.2 V)."
      },
      {
        "number": "15",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The DFN14 package drawing and pinout diagram show an exposed thermal pad, but the datasheet gives it; The pin function table appears only once, for the SOP14 pinout (page 3). The DFN14 pinout on page 2 ",
          "exposed pad 15 added from the footprint",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 12,
        "cost_usd": 0.1647,
        "at": "2026-10-20T10:48:14"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590902597878697984",
        "pages": 12,
        "sha256": "c5eea4058af7465c",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 15,
        "described": 15,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "sit1145aqtk.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.0,
          4.4,
          0.6
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "8079d62f5b9e1cd0308689c1e51508513555e4adea6121b173ad6c80909f9944",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sit1145aqtk-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.0,
          4.4,
          0.6
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "74516e6c596288924d6ebe5b80d9c1e948ac5a7fc858fdb09cdf8404bcd2a660",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}