MCP2542FDT-E

{
  "schema_version": 1,
  "type": "component",
  "slug": "mcp2542fdt-e",
  "title": "MCP2542FDT-E",
  "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",
    "mcp2542fdt-e",
    "factory-2.0.0",
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  "component": {
    "mpn": "MCP2542FDT-E",
    "manufacturer": "Microchip Tech",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "CAN Transceivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588909988836216832",
    "parts": {
      "symbol": "mcp2542fdt-e.kicad_sym",
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      "model_3d_step": "mcp2542fdt-e-etched.step",
      "model_3d_step_plain": "mcp2542fdt-e.step",
      "lbr": "mcp2542fdt-e.lbr"
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    "distributor_links": {
      "lcsc": "C191251"
    },
    "distributor_check": {
      "checked_at": "2026-10-20T22:39:29Z",
      "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: a Low drives CANH and CANL to the Dominant state and a High to Recessive, with an internal pull-up of nominal 33 kΩ to VIO on the MCP2542FD."
      },
      {
        "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 receive data output that is High when the CAN bus is Recessive and Low when Dominant, driven from VIO on the MCP2542FD."
      },
      {
        "number": "5",
        "name": "VIO",
        "type": "power_in",
        "description": "Supply pin for the digital I/O pins (TXD, RXD and STBY), allowing interfacing with 1.8 V to 5 V I/O."
      },
      {
        "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 selecting Normal or Standby mode, with an internal MOS pull-up to VIO on the MCP2542FD (typical 660 kΩ at 5 V, 1.1 MΩ at 3.3 V, 4.4 MΩ at 1.8 V)."
      }
    ],
    "provenance": {
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: MCP2542FDT-E is listed in the SOIC ordering/marking table (page 25, 'MCP2542FDT-E/SN'), so the 8-lea; The SOIC marking text on page 25 is truncated in the extracted datasheet (e.g. 'MCP2542W'), so the m; Pin 9 (EP, exposed thermal pad) applies only to the DFN/TDFN packages and is not present on the SOIC"
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        "cost_usd": 0.0429,
        "at": "2026-10-20T22:34:38"
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      "pins": {
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        "described": 8,
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        "refuses_to_fabricate": true
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    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "SOIC-8",
      "Category": "Interface",
      "Pins": "8"
    },
    "appearance": {
      "contacts": {
        "quote": "2x3x0.75 mm Body (TDFN), 8-lead SN = Plastic Small Outline (SN) - Narrow,",
        "page": 38,
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        "plating": "tin"
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          "name": "VDD supply voltage (absolute maximum)",
          "symbol": "VDD",
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          "min": null,
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        {
          "name": "VIO supply voltage (absolute maximum)",
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        },
        {
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          "name": "Transient voltage on CANH and CANL (ISO-7637)",
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          "name": "Differential bus input voltage",
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        {
          "name": "Differential bus input voltage (pulses)",
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          "conditions": "1000 pulses, t = 0.1 ms, VCANH = +18V",
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        {
          "name": "Dominant state detection differential input voltage",
          "symbol": "VDIFF(I)",
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          "typ": null,
          "max": 9,
          "conditions": "10000 pulses, t = 1 ms",
          "source_page": 12,
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        {
          "name": "Operating ambient temperature (absolute maximum)",
          "symbol": "TAMB",
          "kind": "absolute_maximum",
          "unit": "°C",
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        {
          "name": "Virtual junction temperature",
          "symbol": "TVJ",
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          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 190,
          "conditions": "IEC60747-1",
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        {
          "name": "Storage temperature (absolute maximum)",
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        {
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          "name": "Storage temperature range",
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        {
          "name": "Thermal resistance, 8LD SOIC",
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        {
          "name": "Supply voltage range (VDD pin)",
          "symbol": "VDD",
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          "typ": null,
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        {
          "name": "Supply current (recessive)",
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          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2.5,
          "max": 5,
          "conditions": "Recessive; VTXD = VDD",
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        {
          "name": "Supply current (dominant)",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 55,
          "max": 70,
          "conditions": "Dominant; VTXD = 0V",
          "source_page": 13,
          "source": "datasheet"
        },
        {
          "name": "Standby current (VDD pin)",
          "symbol": "IDDS",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 4,
          "max": 16,
          "conditions": "MCP2542FD and MCP2542WFD, Includes IIO",
          "source_page": 13,
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        {
          "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": "High level of the UV comparator for VDD",
          "symbol": "VUVH",
          "kind": "electrical",
          "unit": "V",
          "min": 4,
          "typ": 4.25,
          "max": 4.4,
          "conditions": "",
          "source_page": 13,
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        {
          "name": "Digital supply voltage range (VIO pin)",
          "symbol": "VIO",
          "kind": "electrical",
          "unit": "V",
          "min": 1.7,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 13,
          "source": "datasheet"
        },
        {
          "name": "Supply current on VIO (recessive)",
          "symbol": "IIO",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 7,
          "max": 20,
          "conditions": "Recessive; VTXD = VIO",
          "source_page": 13,
          "source": "datasheet"
        },
        {
          "name": "Supply current on VIO (dominant)",
          "symbol": "IIO",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 200,
          "max": 400,
          "conditions": "Dominant; VTXD = 0V",
          "source_page": 13,
          "source": "datasheet"
        },
        {
          "name": "Standby current on VIO",
          "symbol": "IDDS",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.3,
          "max": 2,
          "conditions": "Bus Recessive (Note 1)",
          "source_page": 13,
          "source": "datasheet"
        },
        {
          "name": "High level of the POR comparator for VIO",
          "symbol": "VPORH_VIO",
          "kind": "electrical",
          "unit": "V",
          "min": 0.8,
          "typ": 1.2,
          "max": 1.7,
          "conditions": "",
          "source_page": 13,
          "source": "datasheet"
        },
        {
          "name": "Low level of the POR comparator for VIO",
          "symbol": "VPORL_VIO",
          "kind": "electrical",
          "unit": "V",
          "min": 0.7,
          "typ": 1.1,
          "max": 1.4,
          "conditions": "",
          "source_page": 13,
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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": 13,
          "source": "datasheet"
        },
        {
          "name": "Recessive output current",
          "symbol": "IO(R)",
          "kind": "electrical",
          "unit": "mA",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "-24V < VCAN < +24V",
          "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",
          "source_page": 14,
          "source": "datasheet"
        },
        {
          "name": "CANL dominant output voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 0.5,
          "typ": 1.5,
          "max": 2.25,
          "conditions": "RL = 50 to 65",
          "source_page": 14,
          "source": "datasheet"
        },
        {
          "name": "Driver symmetry (VCANH+VCANL)/VDD",
          "symbol": "VSYM",
          "kind": "electrical",
          "unit": "V",
          "min": 0.9,
          "typ": 1,
          "max": 1.1,
          "conditions": "1 MHz square wave, Recessive and Dominant states, and transition (Note 1)",
          "source_page": 14,
          "source": "datasheet"
        },
        {
          "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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        {
          "name": "Recessive differential output voltage",
          "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"
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        {
          "name": "Differential output voltage in 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": "CANL short-circuit output current",
          "symbol": "IO(SC)",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 75,
          "max": 115,
          "conditions": "VTXD = VSS; VCANL = +18V; CANH: floating",
          "source_page": 14,
          "source": "datasheet"
        },
        {
          "name": "Recessive differential input voltage (normal mode)",
          "symbol": "VDIFF(R)(I)",
          "kind": "electrical",
          "unit": "V",
          "min": -4,
          "typ": null,
          "max": 0.5,
          "conditions": "Normal Mode; -12V < V(CANH, CANL) < +12V; see Figure 2-6 (Note 3)",
          "source_page": 14,
          "source": "datasheet"
        },
        {
          "name": "Dominant differential input voltage (normal mode)",
          "symbol": "VDIFF(D)(I)",
          "kind": "electrical",
          "unit": "V",
          "min": 0.9,
          "typ": null,
          "max": 9,
          "conditions": "Normal Mode; -12V < V(CANH, CANL) < +12V; see Figure 2-6 (Note 3)",
          "source_page": 14,
          "source": "datasheet"
        },
        {
          "name": "Differential receiver threshold (normal mode)",
          "symbol": "VTH(DIFF)",
          "kind": "electrical",
          "unit": "V",
          "min": 0.5,
          "typ": 0.7,
          "max": 0.9,
          "conditions": "Normal Mode; -12V < V(CANH, CANL) < +12V; see Figure 2-6 (Note 3)",
          "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, (Note 1)",
          "source_page": 15,
          "source": "datasheet"
        },
        {
          "name": "CANH, CANL input leakage",
          "symbol": "ILI",
          "kind": "electrical",
          "unit": "µA",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "VDD = VTXD = VSTBY = 0V. For MCP2542FD and MCP2542WFD, VIO = 0V. VCANH = VCANL = 5 V.",
          "source_page": 15,
          "source": "datasheet"
        },
        {
          "name": "Low-level input voltage (TXD, STBY), MCP2542FD/WFD",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "MCP2542FD and MCP2542WFD; printed max is 0.3VIO (expression, not numeric)",
          "source_page": 15,
          "source": "datasheet"
        },
        {
          "name": "High-level input current",
          "symbol": "IIH",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "",
          "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": "STBY low-level input current",
          "symbol": "IIL(STBY)",
          "kind": "electrical",
          "unit": "µA",
          "min": -30,
          "typ": null,
          "max": -1,
          "conditions": "",
          "source_page": 15,
          "source": "datasheet"
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