SIT1027QT

{
  "schema_version": 1,
  "type": "component",
  "slug": "sit1027qt",
  "title": "SIT1027QT",
  "brief": "SIT LIN Transceivers, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "sit1027qt"
  ],
  "component": {
    "mpn": "SIT1027QT",
    "manufacturer": "SIT",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "LIN Transceivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589838816161923072",
    "parts": {
      "symbol": "sit1027qt.kicad_sym",
      "footprint": "sit1027qt.kicad_mod",
      "model_3d": "sit1027qt-etched.glb",
      "model_3d_plain": "sit1027qt.glb",
      "model_3d_step": "sit1027qt-etched.step",
      "model_3d_step_plain": "sit1027qt.step",
      "lbr": "sit1027qt.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "RXD",
        "type": "output",
        "description": "Receive data output to the MCU (open-drain, needs external pull-up). Reports the state of the LIN bus; also driven active LOW after a remote wake-up event to interrupt the microcontroller."
      },
      {
        "number": "2",
        "name": "SLP_N",
        "type": "input",
        "description": "Sleep control input (active LOW). Controls the inhibit output and mode transitions: hold HIGH for tgotonorm to enter Normal mode, hold LOW for tgotosleep to enter Sleep mode. Also resets the wake-up source flag on TXD and wake-up request on RXD. Has an internal pull-down so a floating pin forces Sleep mode."
      },
      {
        "number": "3",
        "name": "n.c.",
        "type": "unconnected",
        "description": "Not connected. Leave open (or tie to a convenient net per PCB preference)."
      },
      {
        "number": "4",
        "name": "TXD",
        "type": "input",
        "description": "Transmit data input from the MCU. LOW drives the LIN bus to the dominant state, HIGH releases it to the recessive state. Has an internal pull-down to GND so an unconnected TXD forces a defined level."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "6",
        "name": "LIN",
        "type": "bidirectional",
        "description": "LIN bus line I/O (single-wire, up to 20 kBd, 12V nominal). Includes an integrated ~30 kΩ pull-up to VBAT for slave-node operation; when used as a master node, an additional external pull-up (typically 1 kΩ) to VBAT through a series diode is required."
      },
      {
        "number": "7",
        "name": "VBAT",
        "type": "power_in",
        "description": "Battery supply voltage input. Operating range 5.5V to 27V (12V automotive nominal). Undervoltage detection disables the driver below Vth(VBATL)L and re-enables above Vth(VBATL)H."
      },
      {
        "number": "8",
        "name": "n.c.",
        "type": "unconnected",
        "description": "Not connected."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589838816161923072",
        "pages": 20,
        "sha256": "554c411d0b8bbe3b",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "sit1027qt.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sit1027qt-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "cd639f9da78ad25450471c45407faf013a3633c9c2e2db2470d37c0a11ea755d",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "SIT",
      "Package": "SOP-8",
      "Category": "Interface",
      "Pins": "8"
    }
  },
  "variants": [
    {
      "mpn": "SIT1027QT",
      "kind": "packaging"
    },
    {
      "mpn": "SIT1027QTK",
      "kind": "packaging"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sit1027qt"
  ],
  "discovery_pitch": "SIT1027QT (SIT) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sit1027qt.kicad_sym",
    "sit1027qt.kicad_mod",
    "sit1027qt.glb",
    "sit1027qt.step",
    "sit1027qt.lbr",
    "docs/hero.png",
    "docs/sit1027qt-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-25T06:01:19.080Z"
}