SIT1051AT

{
  "schema_version": 1,
  "type": "component",
  "slug": "sit1051at",
  "title": "SIT1051AT",
  "brief": "SIT CAN ICs, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "comm-uart",
    "sit1051at"
  ],
  "component": {
    "mpn": "SIT1051AT",
    "manufacturer": "SIT",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Comm/UART",
    "subcategory": "CAN ICs",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2303201630_SIT-SIT1051AT-3_C5382551.pdf",
    "parts": {
      "symbol": "sit1051at.kicad_sym",
      "footprint": "sit1051at.kicad_mod",
      "model_3d": "sit1051at-etched.glb",
      "model_3d_plain": "sit1051at.glb",
      "model_3d_step": "sit1051at-etched.step",
      "model_3d_step_plain": "sit1051at.step",
      "lbr": "sit1051at.lbr"
    },
    "distributor_links": {
      "lcsc": "C5382550"
    },
    "pins": [
      {
        "number": "1",
        "name": "TXD",
        "type": "input",
        "description": "Transmit data input from the CAN controller. Logic low drives the bus dominant; logic high (or floating, internally biased high) leaves the bus recessive. VIH ≥ 2V, VIL ≤ 0.8V for the SIT1051AT variant (5V logic)."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference. All voltage references are with respect to this pin."
      },
      {
        "number": "3",
        "name": "VCC",
        "type": "power_in",
        "description": "5V supply for the transceiver core and CAN bus drivers. Operating range 4.5V to 5.5V; absolute max -0.3V to 7V. Includes undervoltage protection."
      },
      {
        "number": "4",
        "name": "RXD",
        "type": "output",
        "description": "Receive data output to the CAN controller. Push-pull output referenced to VCC (SIT1051AT variant). Low for dominant bus, high for recessive. IOH = -3 mA typ, IOL = 5 mA typ."
      },
      {
        "number": "5",
        "name": "N.C.",
        "type": "unconnected",
        "description": "No internal connection on the SIT1051AT variant. On sibling variants this pin is used as EN (SIT1051AT/E, shutdown-mode enable, active low) or VIO (SIT1051AT/3, 3.3V I/O supply for level translation)."
      },
      {
        "number": "6",
        "name": "CANL",
        "type": "bidirectional",
        "description": "Low-side CAN bus I/O. Differential complement to CANH. Dominant output typ 1.5V, recessive ~0.5·VCC. Withstands -70V to +70V continuous; input resistance 15 kΩ typ."
      },
      {
        "number": "7",
        "name": "CANH",
        "type": "bidirectional",
        "description": "High-side CAN bus I/O. Differential complement to CANL. Dominant output typ 3.5V, recessive ~0.5·VCC. Withstands -70V to +70V continuous; input resistance 15 kΩ typ."
      },
      {
        "number": "8",
        "name": "S",
        "type": "input",
        "description": "Mode select input. Low = high-speed (normal) mode with active bus driver; high = silent (listen-only) mode where the transmitter is disabled but RXD still reports bus activity. Internally biased low if left floating."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2303201630_SIT-SIT1051AT-3_C5382551.pdf",
        "pages": 19,
        "sha256": "1de7e49a0562374d",
        "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": "sit1051at.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": "sit1051at-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": "7a8413448fa04cf4b00d2fd1daa495135a6002312a5b4191d7e472d1bd87b2c5",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "SIT",
      "Package": "SOP-8",
      "Category": "Comm/UART",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sit1051at"
  ],
  "discovery_pitch": "SIT1051AT (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",
    "sit1051at.kicad_sym",
    "sit1051at.kicad_mod",
    "sit1051at.glb",
    "sit1051at.step",
    "sit1051at-etched.step",
    "sit1051at.lbr",
    "docs/hero.png",
    "docs/sit1051at-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "SIT1051AT",
      "kind": "packaging"
    },
    {
      "mpn": "SIT1051AT/E",
      "kind": "packaging"
    },
    {
      "mpn": "SIT1051AT/3",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T06:02:33.097Z"
}