SIT1040T

{
  "schema_version": 1,
  "type": "component",
  "slug": "sit1040t",
  "title": "SIT1040T",
  "brief": "SIT CAN Controllers, SO-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "sit1040t"
  ],
  "component": {
    "mpn": "SIT1040T",
    "manufacturer": "SIT",
    "package": "SO-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "CAN Controllers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/3c526a161fe3a76cba0e223024bad92d.pdf",
    "parts": {
      "symbol": "sit1040t.kicad_sym",
      "footprint": "sit1040t.kicad_mod",
      "model_3d": "sit1040t-etched.glb",
      "model_3d_plain": "sit1040t.glb",
      "model_3d_step": "sit1040t-etched.step",
      "model_3d_step_plain": "sit1040t.step",
      "lbr": "sit1040t.lbr"
    },
    "distributor_links": {
      "lcsc": "C381512"
    },
    "pins": [
      {
        "number": "1",
        "name": "TXD",
        "type": "input",
        "description": "Transmit data input from the CAN protocol controller. Drives the bus dominant when low and recessive when high. 3.3 V / 5 V logic compatible; VIH ≥ 2 V, VIL ≤ 0.8 V. Internal pull-up leaves TXD in the recessive state when floating (TXD_O = H)."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground / device reference. All voltages are referenced to this pin."
      },
      {
        "number": "3",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage input, nominal 5 V (operating range 4.5 V to 5.5 V, absolute max -0.3 V to +6 V). Should be decoupled to GND with a local bypass capacitor."
      },
      {
        "number": "4",
        "name": "RXD",
        "type": "output",
        "description": "Receive data output to the CAN protocol controller. Reports the bus state: LOW when the bus is dominant, HIGH when recessive. Push-pull output; VOH ≥ 4 V @ IO = -2 mA, VOL ≤ 0.4 V @ IO = 2 mA."
      },
      {
        "number": "5",
        "name": "SPLIT",
        "type": "output",
        "description": "Common-mode stabilization output, nominally VCC/2 (0.3·VCC to 0.7·VCC for |IO| < 500 µA). Intended to be tied to the center tap of a split termination network to stabilize the bus common-mode voltage and improve EMC."
      },
      {
        "number": "6",
        "name": "CANL",
        "type": "bidirectional",
        "description": "Low-level CAN bus line. Driven low in the dominant state and biased to ~VCC/2 in the recessive state. Rated -40 V to +40 V continuous, ±200 V transient; ±8 kV HBM ESD."
      },
      {
        "number": "7",
        "name": "CANH",
        "type": "bidirectional",
        "description": "High-level CAN bus line. Driven high in the dominant state and biased to ~VCC/2 in the recessive state. Rated -40 V to +40 V continuous, ±200 V transient; ±8 kV HBM ESD."
      },
      {
        "number": "8",
        "name": "STB",
        "type": "input",
        "description": "Standby mode control input. STB = 0 selects normal (high-speed) operation; STB = 1 selects low-power standby (~5 µA typical) with bus wake-up capability. VIH ≥ 2.0 V, VIL ≤ 0.8 V."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/3c526a161fe3a76cba0e223024bad92d.pdf",
        "pages": 17,
        "sha256": "8da36b80cd179b04",
        "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "sit1040t.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sit1040t-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "59b512ed175465fbd956af584cb2bc39cb1b13dcefe9f7c24a40c31c532f2cb3",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "SIT",
      "Package": "SO-8",
      "Category": "Interface",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sit1040t"
  ],
  "discovery_pitch": "SIT1040T (SIT) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sit1040t.kicad_sym",
    "sit1040t.kicad_mod",
    "sit1040t.glb",
    "sit1040t.step",
    "sit1040t-etched.step",
    "sit1040t.lbr",
    "docs/hero.png",
    "docs/sit1040t-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "SIT1040TT",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T06:01:36.025Z"
}