MCP2542FD-H

{
  "schema_version": 1,
  "type": "component",
  "slug": "mcp2542fd-h",
  "title": "MCP2542FD-H",
  "brief": "Microchip Tech CAN Transceivers, SOIC-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": [
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    "interface",
    "mcp2542fd-h",
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  "component": {
    "mpn": "MCP2542FD-H",
    "manufacturer": "Microchip Tech",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "CAN Transceivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589838557692268544",
    "parts": {
      "symbol": "mcp2542fd-h.kicad_sym",
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      "model_3d_step": "mcp2542fd-h-etched.step",
      "model_3d_step_plain": "mcp2542fd-h.step",
      "lbr": "mcp2542fd-h.lbr"
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    "distributor_links": {
      "lcsc": "C635949"
    },
    "distributor_check": {
      "checked_at": "2026-10-20T17:15:06Z",
      "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 Data Input: when low, CANH and CANL are driven dominant; when high, they are recessive unless another node drives the bus dominant, with an internal pull-up of nominal 33 kΩ to VIO on this device."
      },
      {
        "number": "2",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground supply pin."
      },
      {
        "number": "3",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply voltage pin that supplies the transmitter and receiver, including the wake-up receiver."
      },
      {
        "number": "4",
        "name": "RXD",
        "type": "output",
        "description": "CMOS-compatible receiver data output that is high when the CAN bus is recessive and low when dominant, driven from VIO on this device."
      },
      {
        "number": "5",
        "name": "VIO",
        "type": "power_in",
        "description": "Supply for the digital I/O pins (TXD, RXD, STBY) that sets their logic levels for 1.8V to 5V I/O on this device (pin is NC on the MCP2544FD/MCP2544WFDT)."
      },
      {
        "number": "6",
        "name": "CANL",
        "type": "bidirectional",
        "description": "CAN Low-level voltage I/O that drives the low side of the CAN differential bus and disconnects from the bus when the device is not powered."
      },
      {
        "number": "7",
        "name": "CANH",
        "type": "bidirectional",
        "description": "CAN High-level voltage I/O that drives the high side of the CAN differential bus and disconnects from the bus when the device is not powered."
      },
      {
        "number": "8",
        "name": "STBY",
        "type": "input",
        "description": "Standby mode input that selects Normal or Standby mode, with an internal MOS pull-up to VIO (typical 660 kΩ at 5V, 1.1 MΩ at 3.3V, 4.4 MΩ at 1.8V)."
      }
    ],
    "provenance": {
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        "primary_model": "claude-haiku-5-5",
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        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin 5 is VIO for the MCP2542FD SOIC variant but is NC on the MCP2544FD/MCP2544WFDT; the MPN MCP2542F"
        ],
        "pages_sent": 18,
        "cost_usd": 0.0547,
        "at": "2026-10-20T17:13:08"
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        "sha256": "484a6f42b22dcf87",
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
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  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "SOIC-8",
      "Category": "Interface",
      "Pins": "8"
    },
    "appearance": {
      "contacts": {
        "quote": "8-Lead Plastic Small Outline (SN) - Narrow, 3.90 mm (.150 In.) Body [SOIC] A A2",
        "page": 32,
        "doc": "ds.pdf",
        "plating": "tin"
      },
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    "characteristics": {
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      "rows": [
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          "name": "DC voltage at TXD, RXD, STBY and VSS",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Upper limit printed as VIO + 0.3 V (not numeric)",
          "source_page": 12,
          "source": "datasheet"
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        {
          "name": "DC voltage at CANH and CANL",
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        {
          "name": "Transient voltage on CANH and CANL (ISO-7637)",
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          "conditions": "Figure 2-5",
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          "name": "Dominant state detection VDIFF(I)",
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        {
          "name": "Storage temperature",
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          "unit": "°C",
          "min": -55,
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        {
          "name": "Operating ambient temperature",
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          "unit": "°C",
          "min": -40,
          "typ": null,
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          "conditions": "",
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        {
          "name": "Virtual junction temperature",
          "symbol": "TVJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 190,
          "conditions": "IEC 60747-1",
          "source_page": 12,
          "source": "datasheet"
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        {
          "name": "Soldering temperature of leads",
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          "kind": "absolute_maximum",
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          "min": null,
          "typ": null,
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          "conditions": "10 seconds",
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        },
        {
          "name": "ESD protection on CANH and CANL",
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          "unit": "kV",
          "min": -13,
          "typ": null,
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          "conditions": "IEC 61000-4-2",
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        {
          "name": "ESD protection on CANH and CANL",
          "symbol": "",
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          "unit": "kV",
          "min": -8,
          "typ": null,
          "max": 8,
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          "source_page": 12,
          "source": "datasheet"
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        {
          "name": "ESD protection on all other pins",
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          "kind": "absolute_maximum",
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          "min": -4,
          "typ": null,
          "max": 4,
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          "source": "datasheet"
        },
        {
          "name": "ESD protection on all pins",
          "symbol": "",
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          "unit": "V",
          "min": -400,
          "typ": null,
          "max": 400,
          "conditions": "IEC 801; Machine Model",
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          "source": "datasheet"
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        {
          "name": "ESD protection on all pins",
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          "unit": "V",
          "min": -750,
          "typ": null,
          "max": 750,
          "conditions": "IEC 801; Charge Device Model",
          "source_page": 12,
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        },
        {
          "name": "VDD supply voltage (absolute maximum)",
          "symbol": "VDD",
          "kind": "absolute_maximum",
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          "min": null,
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          "max": 7,
          "conditions": "",
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        },
        {
          "name": "VIO supply voltage (absolute maximum)",
          "symbol": "VIO",
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          "unit": "V",
          "min": null,
          "typ": null,
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          "conditions": "",
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        {
          "name": "Specified temperature range (H grade)",
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        {
          "name": "Operating temperature range",
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          "kind": "thermal",
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          "min": -40,
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          "max": 150,
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        {
          "name": "Storage temperature range",
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          "min": -65,
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        {
          "name": "VDD voltage range",
          "symbol": "VDD",
          "kind": "electrical",
          "unit": "V",
          "min": 4.5,
          "typ": null,
          "max": 5.5,
          "conditions": "",
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        },
        {
          "name": "Supply current",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2.5,
          "max": 5,
          "conditions": "Recessive, VTXD = VDD",
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          "source": "datasheet"
        },
        {
          "name": "Supply current",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 55,
          "max": 70,
          "conditions": "Dominant, VTXD = 0V",
          "source_page": 13,
          "source": "datasheet"
        },
        {
          "name": "Standby current",
          "symbol": "IDDS",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 4,
          "max": 16,
          "conditions": "MCP2542FD and MCP2542WFD, includes IIO",
          "source_page": 13,
          "source": "datasheet"
        },
        {
          "name": "Maximum supply current",
          "symbol": "IDDMAX",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 95,
          "max": 140,
          "conditions": "Fault condition: VTXD = VSS, VCANH = VCANL = -5V to +18V (Note 1)",
          "source_page": 13,
          "source": "datasheet"
        },
        {
          "name": "High level of the POR comparator for VDD",
          "symbol": "VPORH",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 3,
          "max": 3.95,
          "conditions": "Note 1",
          "source_page": 13,
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        },
        {
          "name": "Low level of the POR comparator for VDD",
          "symbol": "VPORL",
          "kind": "electrical",
          "unit": "V",
          "min": 1,
          "typ": 2,
          "max": 3.2,
          "conditions": "Note 1",
          "source_page": 13,
          "source": "datasheet"
        },
        {
          "name": "High level of the UV comparator for VDD",
          "symbol": "VUVH",
          "kind": "electrical",
          "unit": "V",
          "min": 4,
          "typ": 4.25,
          "max": 4.4,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Low level of the UV comparator for VDD",
          "symbol": "VUVL",
          "kind": "electrical",
          "unit": "V",
          "min": 3.6,
          "typ": 3.8,
          "max": 4,
          "conditions": "",
          "source_page": 13,
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        },
        {
          "name": "Digital supply voltage range",
          "symbol": "VIO",
          "kind": "electrical",
          "unit": "V",
          "min": 1.7,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 13,
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        },
        {
          "name": "Supply current on VIO",
          "symbol": "IIO",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 7,
          "max": 20,
          "conditions": "Recessive, VTXD = VIO",
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        },
        {
          "name": "CANH; CANL: Recessive bus output voltage",
          "symbol": "VO(R)",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": 3,
          "conditions": "VTXD = VDD, no load",
          "source_page": 13,
          "source": "datasheet"
        },
        {
          "name": "CANH; CANL: Bus output voltage in standby",
          "symbol": "VO(S)",
          "kind": "electrical",
          "unit": "V",
          "min": -0.1,
          "typ": 0,
          "max": 0.1,
          "conditions": "STBY = VTXD = VDD, no load",
          "source_page": 14,
          "source": "datasheet"
        },
        {
          "name": "CANH: Dominant output voltage",
          "symbol": "VO(D)",
          "kind": "electrical",
          "unit": "V",
          "min": 2.75,
          "typ": 3.5,
          "max": 4.5,
          "conditions": "TXD = 0, RL = 50 to 65",
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          "source": "datasheet"
        },
        {
          "name": "CANL: Dominant output voltage",
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          "kind": "electrical",
          "unit": "V",
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          "typ": 1.5,
          "max": 2.25,
          "conditions": "RL = 50 to 65",
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        {
          "name": "Dominant: differential output voltage",
          "symbol": "VO(DIFF)(D)",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": 2,
          "max": 3,
          "conditions": "VTXD = VSS, RL = 50 to 65",
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          "source": "datasheet"
        },
        {
          "name": "Recessive: differential output voltage (normal)",
          "symbol": "VO(DIFF)(R)",
          "kind": "electrical",
          "unit": "mV",
          "min": -500,
          "typ": 0,
          "max": 50,
          "conditions": "VTXD = VDD, no load, normal",
          "source_page": 14,
          "source": "datasheet"
        },
        {
          "name": "Recessive: differential output voltage (standby)",
          "symbol": "VO(DIFF)(S)",
          "kind": "electrical",
          "unit": "mV",
          "min": -200,
          "typ": 0,
          "max": 200,
          "conditions": "VTXD = VDD, no load, standby",
          "source_page": 14,
          "source": "datasheet"
        },
        {
          "name": "CANH: Short-circuit output current",
          "symbol": "IO(SC)",
          "kind": "electrical",
          "unit": "mA",
          "min": -115,
          "typ": -85,
          "max": null,
          "conditions": "VTXD = VSS, VCANH = -3V, CANL floating",
          "source_page": 14,
          "source": "datasheet"
        },
        {
          "name": "Recessive differential input voltage (normal)",
          "symbol": "VDIFF(R)(I)",
          "kind": "electrical",
          "unit": "V",
          "min": -4,
          "typ": null,
          "max": 0.5,
          "conditions": "Normal mode, -12V < V(CANH, CANL) < +12V",
          "source_page": 14,
          "source": "datasheet"
        },
        {
          "name": "Dominant differential input voltage (normal)",
          "symbol": "VDIFF(D)(I)",
          "kind": "electrical",
          "unit": "V",
          "min": 0.9,
          "typ": null,
          "max": 9,
          "conditions": "Normal mode, -12V < V(CANH, CANL) < +12V",
          "source_page": 15,
          "source": "datasheet"
        },
        {
          "name": "Differential receiver threshold (normal)",
          "symbol": "VTH(DIFF)",
          "kind": "electrical",
          "unit": "V",
          "min": 0.5,
          "typ": 0.7,
          "max": 0.9,
          "conditions": "Normal mode, -12V < V(CANH, CANL) < +12V",
          "source_page": 15,
          "source": "datasheet"
        },
        {
          "name": "Differential input hysteresis",
          "symbol": "VHYS(DIFF)",
          "kind": "electrical",
          "unit": "mV",
          "min": 30,
          "typ": null,
          "max": 200,
          "conditions": "Normal mode, see Figure 2-6",
          "source_page": 15,
          "source": "datasheet"
        },
        {
          "name": "TXD low-level input current",
          "symbol": "IIL(TXD)",
          "kind": "electrical",
          "unit": "µA",
          "min": -270,
          "typ": -150,
          "max": -30,
          "conditions": "",
          "source_page": 15,
          "source": "datasheet"
        },
        {
          "name": "Shutdown junction temperature",
          "symbol": "TJ(SD)",
          "kind": "electrical",
          "unit": "°C",
          "min": 165,
          "typ": 175,
          "max": 185,
          "conditions": "-12V < V(CANH, CANL) < +12V (Note 1)",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "Shutdown temperature hysteresis",
          "symbol": "TJ(HYST)",
          "kind": "electrical",
          "unit": "°C",
          "min": 15,
          "typ": null,
          "max": 30,
          "conditions": "-12V < V(CANH, CANL) < +12V (Note 1)",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "Delay TXD low to bus dominant",
          "symbol": "tTXD-BUSON",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 50,
          "max": 85,
          "conditions": "Note 1",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Delay TXD high to bus recessive",
          "symbol": "tTXD-BUSOFF",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 40,
          "max": 85,
          "conditions": "Note 1",
          "source_page": 17,
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        },
        {
          "name": "Delay bus dominant to RXD",
          "symbol": "tBUSON-RXD",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 70,
          "max": 85,
          "conditions": "Note 1",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Delay bus recessive to RXD",
          "symbol": "tBUSOFF-RXD",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 110,
          "max": 145,
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