COS1042T

{
  "schema_version": 1,
  "type": "component",
  "slug": "cos1042t",
  "title": "COS1042T",
  "brief": "COSINE CAN ICs, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "communication interface chip-uart-485-232",
    "cos1042t",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "COS1042T",
    "manufacturer": "COSINE",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Communication Interface Chip/UART/485/232",
    "subcategory": "CAN ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/9ee4af6874d4d7fe2f03b771f1516d48.pdf",
    "parts": {
      "symbol": "cos1042t.kicad_sym",
      "footprint": "cos1042t.kicad_mod",
      "model_3d": "cos1042t-hero.glb",
      "model_3d_plain": "cos1042t-etched.glb",
      "model_3d_step": "cos1042t-etched.step",
      "model_3d_step_plain": "cos1042t.step",
      "lbr": "cos1042t.lbr"
    },
    "distributor_links": {
      "lcsc": "C5334502"
    },
    "distributor_check": {
      "checked_at": "2026-11-05T00:51:46Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "TXD",
        "type": "input",
        "description": "Transmit digital data input: LOW selects the dominant bus state and HIGH the recessive state, and TXD has an internal pull-up to VIO that forces a recessive input if it floats."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the transceiver."
      },
      {
        "number": "3",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage for the transceiver, with a recommended operating range of 4.5 V to 5.5 V (5.0 V typical)."
      },
      {
        "number": "4",
        "name": "RXD",
        "type": "output",
        "description": "Receive digital data output that reads the bus state, driving LOW for dominant and HIGH for recessive, with output current limited to -8 mA to +8 mA."
      },
      {
        "number": "5",
        "name": "SPLIT",
        "type": "output",
        "description": "Common-mode stabilization output on the COS1042T that delivers 0.5VCC in Normal mode for a split termination, and is floating in Standby mode or when VCC is off; leave open if unused."
      },
      {
        "number": "6",
        "name": "CANL",
        "type": "bidirectional",
        "description": "LOW-level CAN bus I/O line, rated for -44 V to +44 V on the bus lines."
      },
      {
        "number": "7",
        "name": "CANH",
        "type": "bidirectional",
        "description": "HIGH-level CAN bus I/O line, rated for -44 V to +44 V on the bus lines."
      },
      {
        "number": "8",
        "name": "STB",
        "type": "input",
        "description": "Standby mode control input: HIGH selects low-power Standby mode and LOW selects Normal mode, with an internal pull-up to VIO that forces Standby if the pin floats."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pin table lists pin 5 twice, as SPLIT (COS1042T) and as VIO (COS1042T/3). The ordering note stat; The pin diagram (Figure 1) is an image and is not in the extracted text, so the pin 1 position and p"
        ],
        "pages_sent": 14,
        "cost_usd": 0.0425,
        "at": "2026-11-05T00:51:33"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/9ee4af6874d4d7fe2f03b771f1516d48.pdf",
        "pages": 14,
        "sha256": "fb5e105a075ed27b",
        "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": "cos1042t.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": "2026-11-05",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cos1042t-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "3cd58c452139b10f1f7c64a8a964d550b9b401456b8afd3e9a05c7086fec0d3a",
        "checked": "2026-11-05",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "COSINE",
      "Package": "SOP-8",
      "Category": "Communication Interface Chip/UART/485/232",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "fb5e105a075ed27b3af7d0c839e22282b035dcb669f2d91294a6498f5e49e780",
      "rows": [
        {
          "name": "DC supply voltage",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "DC voltage at TXD, RXD, STB",
          "symbol": "",
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          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "DC voltage at CANH, CANL and SPLIT",
          "symbol": "",
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          "unit": "V",
          "min": -44,
          "typ": null,
          "max": 44,
          "conditions": "",
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        },
        {
          "name": "RXD output current",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -8,
          "typ": null,
          "max": 8,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "Operating junction temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
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        },
        {
          "name": "Storage temperature",
          "symbol": "",
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          "unit": "°C",
          "min": -55,
          "typ": null,
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        },
        {
          "name": "VCC supply voltage",
          "symbol": "VCC",
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          "min": 4.5,
          "typ": 5,
          "max": 5.5,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "VIO supply voltage on pin VIO",
          "symbol": "VIO",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.8,
          "typ": 3.3,
          "max": 5.5,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Operating ambient temperature",
          "symbol": "",
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          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature (recommended)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Package thermal resistance (SOP8)",
          "symbol": "",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "VCC supply voltage range",
          "symbol": "VCC",
          "kind": "electrical",
          "unit": "V",
          "min": 4.5,
          "typ": 5,
          "max": 5.5,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Undervoltage detection voltage",
          "symbol": "VUVD",
          "kind": "electrical",
          "unit": "V",
          "min": 3.5,
          "typ": 4,
          "max": 4.5,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Hysteresis of UVD comparator",
          "symbol": "VUVDH",
          "kind": "electrical",
          "unit": "V",
          "min": 0.3,
          "typ": 0.5,
          "max": 0.8,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply current (recessive)",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 4,
          "max": 10,
          "conditions": "VTXD=VIO",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply current (dominant)",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 22,
          "max": 40,
          "conditions": "VTXD=0V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Standby current (COS1042T variant)",
          "symbol": "ICCS",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 12,
          "max": 17,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Digital supply voltage range",
          "symbol": "VIO",
          "kind": "electrical",
          "unit": "V",
          "min": 2.8,
          "typ": null,
          "max": 5.5,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Undervoltage detection voltage (VIO)",
          "symbol": "VUVIO",
          "kind": "electrical",
          "unit": "V",
          "min": 1.3,
          "typ": 2,
          "max": 2.7,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply current (VIO, normal mode)",
          "symbol": "IVIO",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 20,
          "max": 200,
          "conditions": "Normal mode; VTXD=0 or VIO",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply current (VIO, standby mode)",
          "symbol": "IVIO",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 12,
          "max": 17,
          "conditions": "Standby mode",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Standby mode output voltage",
          "symbol": "VO(S)",
          "kind": "electrical",
          "unit": "V",
          "min": -0.1,
          "typ": 0,
          "max": 0.1,
          "conditions": "Standby mode, no load",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Recessive output voltage",
          "symbol": "VO(R)",
          "kind": "electrical",
          "unit": "mV",
          "min": 2,
          "typ": null,
          "max": 3,
          "conditions": "Normal mode, VTXD=VIO, no load",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Recessive differential output voltage",
          "symbol": "VO(DIFF)",
          "kind": "electrical",
          "unit": "mV",
          "min": -50,
          "typ": 0,
          "max": 50,
          "conditions": "VTXD=VIO",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Recessive differential output voltage (no load)",
          "symbol": "VO(DIFF)",
          "kind": "electrical",
          "unit": "mV",
          "min": -500,
          "typ": 0,
          "max": 50,
          "conditions": "VTXD=VIO, no load",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Recessive short circuit output current",
          "symbol": "IO(SC)",
          "kind": "electrical",
          "unit": "mA",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "Normal mode, VCANH=VCANH=-27V to +32V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Dominant output voltage (CANH)",
          "symbol": "VO(D)",
          "kind": "electrical",
          "unit": "V",
          "min": 2.75,
          "typ": 3.5,
          "max": 4.5,
          "conditions": "Pin CANH, VTXD=0V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Dominant output voltage (CANL)",
          "symbol": "VO(D)",
          "kind": "electrical",
          "unit": "V",
          "min": 0.5,
          "typ": 1.5,
          "max": 2.25,
          "conditions": "Pin CANL, VTXD=0V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Dominant differential output voltage",
          "symbol": "VO(DIFF)",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": 2,
          "max": 3,
          "conditions": "Dominant, Normal mode, VTXD=0V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Dominant output voltage symmetry",
          "symbol": "VO(D)(M)",
          "kind": "electrical",
          "unit": "mV",
          "min": -400,
          "typ": 0,
          "max": 400,
          "conditions": "VDD-VCANH-VCANL",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Dominant short circuit output current (CANH)",
          "symbol": "IO(SC)",
          "kind": "electrical",
          "unit": "mA",
          "min": -120,
          "typ": -70,
          "max": -40,
          "conditions": "CANH; VTXD=0, VCANH=0V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Dominant short circuit output current (CANL)",
          "symbol": "IO(SC)",
          "kind": "electrical",
          "unit": "mA",
          "min": 40,
          "typ": 85,
          "max": 120,
          "conditions": "CANL; VTXD=0, VCANL=18V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Recessive differential input voltage",
          "symbol": "VDIFF(RI)",
          "kind": "electrical",
          "unit": "V",
          "min": -1,
          "typ": null,
          "max": 0.5,
          "conditions": "Normal mode; 12V VCANH,CANL +12V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Recessive differential input voltage (standby)",
          "symbol": "VDIFF(RI)",
          "kind": "electrical",
          "unit": "V",
          "min": -1,
          "typ": null,
          "max": 0.4,
          "conditions": "Standby mode; 12V VCANH,CANL +12V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Dominant differential input voltage",
          "symbol": "VDIFF(DI)",
          "kind": "electrical",
          "unit": "V",
          "min": 0.9,
          "typ": null,
          "max": null,
          "conditions": "Normal mode; 12V VCANH,CANL +12V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Dominant differential input voltage (standby)",
          "symbol": "VDIFF(DI)",
          "kind": "electrical",
          "unit": "V",
          "min": 1,
          "typ": null,
          "max": null,
          "conditions": "Standby mode; 12V VCANH,CANL +12V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Differential receiver threshold",
          "symbol": "VTH(DIFF)",
          "kind": "electrical",
          "unit": "V",
          "min": 0.5,
          "typ": 0.7,
          "max": 0.9,
          "conditions": "Normal mode; 12V VCANH,CANL +12V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Differential receiver threshold (standby)",
          "symbol": "VTH(DIFF)",
          "kind": "electrical",
          "unit": "V",
          "min": 0.4,
          "typ": null,
          "max": 1.15,
          "conditions": "Standby mode; 12V VCANH,CANL +12V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Differential input hysteresis",
          "symbol": "VHYS(DIFF)",
          "kind": "electrical",
          "unit": "mV",
          "min": 50,
          "typ": null,
          "max": 200,
          "conditions": "Normal mode",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Common mode input resistance",
          "symbol": "RIN",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 10,
          "typ": 15,
          "max": 25,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Common mode resistance matching",
          "symbol": "RIN(M)",
          "kind": "electrical",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Differential input resistance",
          "symbol": "RIN(DIFF)",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 20,
          "typ": 30,
          "max": 50,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Common mode input capacitance",
          "symbol": "CIN(CM)",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Differential input capacitance",
          "symbol": "CIN(DIFF)",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input leakage current",
          "symbol": "ILI",
          "kind": "electrical",
          "unit": "μA",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "VCC = VTXD = VSTB = 0V; VCANH = VCANL= 5V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "SPLIT leakage current (COS1042T only)",
          "symbol": "IL",
          "kind": "electrical",
          "unit": "μA",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "Standby mode; VSPLIT = -24V to +24V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "LOW-level input voltage (TXD, STB)",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "HIGH-level input current",
          "symbol": "IIH",
          "kind": "electrical",
          "unit": "μA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "LOW-level input current (TXD)",
          "symbol": "IIL(TXD)",
          "kind": "electrical",
          "unit": "μA",
          "min": -270,
          "typ": -150,
          "max": -30,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "LOW-level input current (STB)",
          "symbol": "IIL(STB)",
          "kind": "electrical",
          "unit": "μA",
          "min": -20,
          "typ": null,
          "max": -1,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "LOW-level output voltage (RXD)",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "IOL=4mA",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Shutdown junction temperature",
          "symbol": "TJ(SD)",
          "kind": "electrical",
          "unit": "°C",
          "min": 160,
          "typ": 170,
          "max": 180,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
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