TJA1050

{
  "schema_version": 1,
  "type": "component",
  "slug": "tja1050",
  "title": "TJA1050",
  "brief": "NXP high-speed CAN transceiver, SO-8. Up to 1 Mb/s, differential bus, silent mode. The controller-to-bus interface. Datasheet-verified.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "can-bus",
    "can-transceiver",
    "so-8",
    "nxp"
  ],
  "component": {
    "mpn": "TJA1050",
    "manufacturer": "NXP Semiconductors",
    "package": "SO-8",
    "pin_count": 8,
    "category": "Interface IC",
    "subcategory": "High-speed CAN transceiver",
    "datasheet": "https://www.nxp.com/docs/en/data-sheet/TJA1050.pdf",
    "parts": {
      "symbol": "tja1050.kicad_sym",
      "footprint": "tja1050.kicad_mod",
      "model_3d": "tja1050-etched.glb",
      "model_3d_plain": "tja1050.glb",
      "lbr": "tja1050.lbr",
      "model_3d_step": "tja1050-etched.step",
      "model_3d_step_plain": "tja1050.step"
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    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "TXD",
        "type": "input",
        "description": "Transmit data input from the CAN controller to the bus line drivers. LOW drives the bus to dominant, HIGH (or floating) leaves the bus recessive. Internal pull-up (~200 uA) to VCC; VIH >= 2.0 V, VIL <= 0.8 V. TXD dominant time-out (250-750 us) forces the bus back to recessive if held LOW too long."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground. All voltages in the datasheet are referenced to this pin."
      },
      {
        "number": "3",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, 4.75 V to 5.25 V. Typical supply current is 50 mA dominant / 5 mA recessive. Bypass with 100 nF close to the pin."
      },
      {
        "number": "4",
        "name": "RXD",
        "type": "output",
        "description": "Receive data output; forwards the differential bus state to the CAN controller. LOW = dominant, HIGH = recessive. Drive capability IOH = -6 mA typ. at VRXD = 0.7*VCC, IOL = 8.5 mA typ. at VRXD = 0.45 V."
      },
      {
        "number": "5",
        "name": "Vref",
        "type": "output",
        "description": "Reference voltage output at 0.5*VCC (0.45*VCC to 0.55*VCC) for use as a stable mid-supply reference to the CAN controller. Load current limited to +/-50 uA."
      },
      {
        "number": "6",
        "name": "CANL",
        "type": "bidirectional",
        "description": "LOW-level CAN bus line. Driven toward GND (typ. 1.4 V) in the dominant state and biased to 0.5*VCC in the recessive state through internal 25 kOhm. Protected against ISO 7637 automotive transients (-200 V to +200 V) and short-circuits to +/-27 V (up to +40 V absolute max)."
      },
      {
        "number": "7",
        "name": "CANH",
        "type": "bidirectional",
        "description": "HIGH-level CAN bus line. Driven toward VCC (typ. 3.6 V) in the dominant state and biased to 0.5*VCC in the recessive state through internal 25 kOhm. Protected against ISO 7637 automotive transients (-200 V to +200 V) and short-circuits to +/-27 V (up to +40 V absolute max)."
      },
      {
        "number": "8",
        "name": "S",
        "type": "input",
        "description": "Mode select input. Tie to GND for high-speed (normal) mode; tie to VCC for silent mode (transmitter disabled, receiver still operational). Weak internal pull-down (~30 uA); if left floating the device defaults to high-speed mode, but grounding S is recommended for best EMI. VIH >= 2.0 V (silent), VIL <= 0.8 V (high-speed)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.nxp.com/docs/en/data-sheet/TJA1050.pdf",
        "pages": 18,
        "sha256": "f95c1ffa13e4d80e",
        "source_tier": "mfr"
      },
      "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": "tja1050.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",
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      },
      {
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        "role": "eda",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          1.75
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "217968aed9995ee25e3e29043911191872cddf697b65d2ce8a37bd118961e2d9",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Type": "High-speed CAN transceiver",
      "Bus speed": "up to 1 Mb/s",
      "Bus interface": "CANH / CANL (differential)",
      "Controller interface": "TXD / RXD (logic level)",
      "Modes": "high-speed / silent (S pin)",
      "Reference": "Vref (0.5 x VCC)",
      "Supply voltage": "4.75-5.25 V",
      "Package": "SO-8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tja1050",
    "can transceiver",
    "can bus physical layer",
    "high speed can",
    "nxp can"
  ],
  "discovery_pitch": "TJA1050 high-speed CAN transceiver (SO-8) with datasheet-verified pinout, KiCad symbol/footprint/3D, and full provenance.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "viewers/footprint.html",
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  ],
  "variants": [
    {
      "mpn": "TJA1050T (SO-8)",
      "kind": "packaging"
    },
    {
      "mpn": "TJA1050T/CM (SO-8, tape & reel)",
      "kind": "packaging"
    }
  ]
}