TJA1042T-JSM

{
  "schema_version": 1,
  "type": "component",
  "slug": "tja1042t-jsm",
  "title": "TJA1042T-JSM",
  "brief": "JSMSEMI CAN 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",
    "tja1042t-jsm"
  ],
  "component": {
    "mpn": "TJA1042T-JSM",
    "manufacturer": "JSMSEMI",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "CAN Transceivers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/c5072a898d83a1bd89f7b8b5c6ffe067.pdf",
    "parts": {
      "symbol": "tja1042t-jsm.kicad_sym",
      "footprint": "tja1042t-jsm.kicad_mod",
      "model_3d": "tja1042t-jsm-etched.glb",
      "model_3d_plain": "tja1042t-jsm.glb",
      "model_3d_step": "tja1042t-jsm-etched.step",
      "model_3d_step_plain": "tja1042t-jsm.step",
      "lbr": "tja1042t-jsm.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "TXD",
        "type": "input",
        "description": "CAN transmit data input from the protocol controller. LOW drives the bus to the dominant state; HIGH allows the bus to be recessive. Integrated pull-up to VCC; TXD dominant time-out prevents permanent bus blocking."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the transceiver. Must be tied to board ground."
      },
      {
        "number": "3",
        "name": "VCC",
        "type": "power_in",
        "description": "Transceiver 5 V supply voltage. Recommended operating range 4.5 V to 5.5 V; absolute max 7 V. Bypass with a local decoupling capacitor to GND."
      },
      {
        "number": "4",
        "name": "RXD",
        "type": "output",
        "description": "CAN receive data output to the protocol controller. LOW indicates a dominant bus state, HIGH indicates recessive. Push-pull CMOS output rated ±2 mA (max ±8 mA absolute)."
      },
      {
        "number": "5",
        "name": "NC",
        "type": "unconnected",
        "description": "No Connect on the TJA1042T variant (this SOP-8 device has no VIO level-shifting supply). Leave floating or tie to GND. In the /3 variant this same pin becomes VIO."
      },
      {
        "number": "6",
        "name": "CANL",
        "type": "bidirectional",
        "description": "Low-level CAN bus line (analog I/O). Together with CANH forms the differential CAN pair. Rated ±70 V bus fault tolerance; ±8 kV HBM / ±15 kV CDM / ±8 kV IEC 61000-4-2 contact ESD."
      },
      {
        "number": "7",
        "name": "CANH",
        "type": "bidirectional",
        "description": "High-level CAN bus line (analog I/O). Together with CANL forms the differential CAN pair. Rated ±70 V bus fault tolerance; ±8 kV HBM / ±15 kV CDM / ±8 kV IEC 61000-4-2 contact ESD."
      },
      {
        "number": "8",
        "name": "STB",
        "type": "input",
        "description": "Standby mode control input (active HIGH). LOW selects Normal mode with the CAN driver active; HIGH selects low-power Standby mode with bus wake-up capability. Integrated pull-up biases the device to Standby if left floating."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/c5072a898d83a1bd89f7b8b5c6ffe067.pdf",
        "pages": 21,
        "sha256": "f2a20feb72d97c3a",
        "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": "tja1042t-jsm.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": "tja1042t-jsm-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "e8ada05f15e6baf6a33eb9d2c0ce5204b3b5c32fc685da2eee4172eac450137d",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "JSMSEMI",
      "Package": "SOP-8",
      "Category": "Interface",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tja1042t-jsm"
  ],
  "discovery_pitch": "TJA1042T-JSM (JSMSEMI) 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",
    "tja1042t-jsm.kicad_sym",
    "tja1042t-jsm.kicad_mod",
    "tja1042t-jsm.glb",
    "tja1042t-jsm.step",
    "tja1042t-jsm.lbr",
    "docs/hero.png",
    "docs/tja1042t-jsm-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "tja1042t-jsm-etched.step"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "TJA1042T-JSM",
      "kind": "packaging"
    },
    {
      "mpn": "TJA1042TK-JSM",
      "kind": "unknown"
    },
    {
      "mpn": "TJA1042T/3-JSM",
      "kind": "unknown"
    },
    {
      "mpn": "TJA1042TK/3-JSM",
      "kind": "unknown"
    }
  ],
  "updated_at": "2026-09-25T09:41:52.281Z"
}