MCP2021A-330E

{
  "schema_version": 1,
  "type": "component",
  "slug": "mcp2021a-330e",
  "title": "MCP2021A-330E",
  "brief": "Microchip Tech LIN Transceivers, DFN-8-EP(4x4). 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",
    "mcp2021a-330e",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "MCP2021A-330E",
    "manufacturer": "Microchip Tech",
    "package": "DFN-8-EP(4x4)",
    "pin_count": 9,
    "category": "Communication Interface Chip/UART/485/232",
    "subcategory": "LIN Transceivers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/cf02d583f65b1dc9351982f201667041.pdf",
    "parts": {
      "symbol": "mcp2021a-330e.kicad_sym",
      "footprint": "mcp2021a-330e.kicad_mod",
      "model_3d": "mcp2021a-330e-hero.glb",
      "model_3d_plain": "mcp2021a-330e-etched.glb",
      "model_3d_step": "mcp2021a-330e-etched.step",
      "model_3d_step_plain": "mcp2021a-330e.step",
      "lbr": "mcp2021a-330e.lbr"
    },
    "distributor_links": {
      "lcsc": "C637683"
    },
    "distributor_check": {
      "checked_at": "2026-10-26T19:25:03Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RXD",
        "type": "output",
        "description": "Receive Data Output, a standard CMOS output that follows the state of the LBUS pin."
      },
      {
        "number": "2",
        "name": "CS/LWAKE",
        "type": "input",
        "description": "Chip Select and Local Wake-up Input (TTL level, high-voltage tolerant) that controls device state transitions, with an internal pull-down (~600 kΩ when high, ~300 kΩ when low); should not be tied directly to VREG."
      },
      {
        "number": "3",
        "name": "VREG",
        "type": "power_out",
        "description": "Voltage regulator output, an on-chip LDO giving +3.3V (for the -330 option) at 70 mA regulated voltage."
      },
      {
        "number": "4",
        "name": "TXD",
        "type": "input",
        "description": "Transmit Data Input (TTL level, HV-compliant up to 30V, adaptive pull-up to ~4.2V); LBUS is dominant when TXD is low and recessive when high."
      },
      {
        "number": "5",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "6",
        "name": "LBUS",
        "type": "bidirectional",
        "description": "LIN bus bidirectional interface pin, open-collector output with current limitation and controlled slopes, with a 160 kHz first-order low-pass input filter."
      },
      {
        "number": "7",
        "name": "VBB",
        "type": "power_in",
        "description": "Battery positive supply voltage pin, with an external series diode to prevent reverse powering."
      },
      {
        "number": "8",
        "name": "FAULT/TXE",
        "type": "bidirectional",
        "description": "Fault Detect Output/Transmitter Enable Input, HV-tolerant open-drain output up to 30V; a low level places the device in Transmitter Off mode, and a 10 kΩ external pull-up is recommended."
      },
      {
        "number": "9",
        "name": "EP",
        "type": "passive",
        "description": "Exposed thermal pad; the datasheet gives no electrical connection requirement in the provided text."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: EP pin type and connection (e.g., to VSS) are not stated in the provided text; the pad is only liste; Package drawing pages for the DFN (C04-131E) contain no dimensional text here; the pinout was taken "
        ],
        "pages_sent": 14,
        "cost_usd": 0.0899,
        "at": "2026-10-26T19:24:51"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/cf02d583f65b1dc9351982f201667041.pdf",
        "pages": 46,
        "sha256": "4611d37e30ee6ed5",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "mcp2021a-330e.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4,
          3.98,
          0.92
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "4672964215aa4510e5189d958d9ad3e5259af86a4b80262051b78f0663c358ef",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mcp2021a-330e-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": "387b6ab517b4672a5c9d57b1a94fcdcf32ad264408c4d9b0fd68f6d48fe5ec77",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "DFN-8-EP(4x4)",
      "Category": "Communication Interface Chip/UART/485/232",
      "Pins": "9"
    },
    "appearance": {
      "contacts": {
        "quote": "f) MCP2021A-500E/P: 5.0V, 8-lead PDIP package g) MCP2021A-330E/SN: 3.3V, 8-lead SOIC package",
        "page": 44,
        "doc": "ds.pdf",
        "plating": "tin"
      },
      "version": 1,
      "datasheet_sha256": "4611d37e30ee6ed53b7be2c50e0ac7a0faf4bf5b986faa704f0b9f7d83808272"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "4611d37e30ee6ed53b7be2c50e0ac7a0faf4bf5b986faa704f0b9f7d83808272",
      "rows": [
        {
          "name": "VBB Quiescent Operating Current",
          "symbol": "IBBQ",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "IOUT = 0 mA, LBUS recessive, VREG = 3.3V",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "VBB Ready Current",
          "symbol": "IBBRD",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "IOUT = 0 mA, LBUS recessive, VREG = 3.3V",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "VBB Transmitter-Off Current",
          "symbol": "IBBTO",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "With voltage regulator on, transmitter off, receiver on, FAULT/TXE = VIL, CS = VIH, VREG = 3.3V",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "VBB Power-Down Current",
          "symbol": "IBBPD",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 4.5,
          "max": 8,
          "conditions": "With voltage regulator off, receiver on and transmitter off, FAULT/TXE = VIH, TXD = VIH, CS = VIL",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "VBB Current with VSS Floating",
          "symbol": "IBBNOGND",
          "kind": "electrical",
          "unit": "mA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "VBB = 12V, GND to VBB, VLIN = 0 – 18V",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "High-Level Input Voltage (TXD, FAULT/TXE)",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "Max printed VREG +0.3",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "Low-Level Input Voltage (TXD, FAULT/TXE)",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 0.8,
          "conditions": "",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "High-Level Input Current (TXD, FAULT/TXE)",
          "symbol": "IIH",
          "kind": "electrical",
          "unit": "µA",
          "min": -2.5,
          "typ": null,
          "max": 0.4,
          "conditions": "Input voltage = 4.0V, ~800 k internal adaptive pull-up",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "Low-Level Input Current (TXD, FAULT/TXE)",
          "symbol": "IIL",
          "kind": "electrical",
          "unit": "µA",
          "min": -10,
          "typ": null,
          "max": null,
          "conditions": "Input voltage = 0.5V, ~800 k internal adaptive pull-up",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "High-Level Input Voltage (CS/LWAKE)",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "Through a current-limiting resistor; max printed VBB",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "Low-Level Input Voltage (CS/LWAKE)",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 0.8,
          "conditions": "",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "High-Level Input Current (CS/LWAKE)",
          "symbol": "IIH",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 8,
          "conditions": "Input voltage = 0.8VREG, ~1.3 M internal pull-down to VSS",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Low-Level Input Current (CS/LWAKE)",
          "symbol": "IIL",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "Input voltage = 0.2VREG, ~1.3 M internal pull-down to VSS",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Low-Level Output Voltage (RXD)",
          "symbol": "VOLRXD",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "IOL = 2 mA; max printed 0.2VREG",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "High-Level Output Voltage (RXD)",
          "symbol": "VOHRXD",
          "kind": "electrical",
          "unit": "V",
          "min": 0.8,
          "typ": null,
          "max": null,
          "conditions": "IOH = 2 mA; min printed 0.8VREG",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Low-Level Output Voltage (FAULT/TXE)",
          "symbol": "VOLOD",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "IOL = 4 mA",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Low-Level Output Voltage (RESET)",
          "symbol": "VOLRST",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "IOL = 4 mA",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "LBUS High-Level Input Voltage",
          "symbol": "VIH(LBUS)",
          "kind": "electrical",
          "unit": "V",
          "min": 0.6,
          "typ": null,
          "max": null,
          "conditions": "Recessive state; min printed 0.6 VBB",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "LBUS Low-Level Input Voltage",
          "symbol": "VIL(LBUS)",
          "kind": "electrical",
          "unit": "V",
          "min": -8,
          "typ": null,
          "max": 0.4,
          "conditions": "Dominant state; max printed 0.4 VBB",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "LBUS Input Hysteresis",
          "symbol": "VHYS",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.175,
          "conditions": "VIH(LBUS)–VIL(LBUS); max printed 0.175 VBB",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "LBUS Low-Level Output Current",
          "symbol": "IOL(LBUS)",
          "kind": "electrical",
          "unit": "mA",
          "min": 40,
          "typ": null,
          "max": 200,
          "conditions": "Output voltage = 0.1 VBB, VBB = 12V",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Pull-Up Current on Input",
          "symbol": "IPU(LBUS)",
          "kind": "electrical",
          "unit": "µA",
          "min": -180,
          "typ": null,
          "max": -72,
          "conditions": "~30 k internal pull-up @ VIH(LBUS) = 0.7 VBB, VBB = 12V",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Short Circuit Current Limit",
          "symbol": "ISC",
          "kind": "electrical",
          "unit": "mA",
          "min": 50,
          "typ": null,
          "max": 200,
          "conditions": "Note 1",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "LBUS High-Level Output Voltage",
          "symbol": "VOH(LBUS)",
          "kind": "electrical",
          "unit": "V",
          "min": 0.8,
          "typ": null,
          "max": null,
          "conditions": "min printed 0.8 VBB, max VBB",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Driver Dominant Voltage",
          "symbol": "V_LOSUP",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.1,
          "conditions": "VBB = 7.3V, RLOAD = 1000",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Driver Dominant Voltage",
          "symbol": "V_HISUP",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.2,
          "conditions": "VBB = 18V, RLOAD = 1000",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Input Leakage Current (dominant bus level)",
          "symbol": "IBUS_PAS_DOM",
          "kind": "electrical",
          "unit": "mA",
          "min": -1,
          "typ": null,
          "max": null,
          "conditions": "Driver off, VBUS = 0V, VBB = 12V",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Input Leakage Current (recessive bus level)",
          "symbol": "IBUS_PAS_REC",
          "kind": "electrical",
          "unit": "µA",
          "min": -20,
          "typ": null,
          "max": 20,
          "conditions": "Driver off, 8V < VBB < 18V, 8V < VBUS < 18V, VBUS ≥ VBB",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Leakage Current (disconnected from ground)",
          "symbol": "IBUS_NO_GND",
          "kind": "electrical",
          "unit": "µA",
          "min": -10,
          "typ": null,
          "max": 10,
          "conditions": "GNDDEVICE = VBB, 0V < VBUS < 18V, VBB = 12V",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Leakage Current (disconnected from VBB)",
          "symbol": "IBUS_NO_PWR",
          "kind": "electrical",
          "unit": "µA",
          "min": -10,
          "typ": null,
          "max": 10,
          "conditions": "VBB = GND, 0<VBUS < 18V",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Receiver Center Voltage",
          "symbol": "VBUS_CNT",
          "kind": "electrical",
          "unit": "V",
          "min": 0.475,
          "typ": 0.5,
          "max": 0.525,
          "conditions": "VBUS_CNT = (VIL(LBUS)+VIH(LBUS))/2; values printed as x VBB",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Slave Termination",
          "symbol": "RSLAVE",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 20,
          "typ": 30,
          "max": 47,
          "conditions": "Note 2",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Capacitance of Slave Node",
          "symbol": "CSLAVE",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "Note 2",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Wake-Up Voltage Threshold on LIN Bus",
          "symbol": "VWK(LBUS)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 3.4,
          "conditions": "Wake-up from Power-Down mode (Note 3)",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage 3.3V",
          "symbol": "VREG",
          "kind": "electrical",
          "unit": "V",
          "min": 3.2,
          "typ": 3.3,
          "max": 3.4,
          "conditions": "0 mA < IOUT < 70 mA",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation 3.3V",
          "symbol": "VOUT1",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 10,
          "max": 50,
          "conditions": "IOUT = 1 mA, 6.0V < VBB < 18V",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation 3.3V",
          "symbol": "VOUT2",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 10,
          "max": 50,
          "conditions": "5 mA < IOUT < 70 mA, 6.0V < VBB < 12V",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Ripple Reject 3.3V",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "1 VPP @ 10 – 20 kHz, ILOAD = 20 mA",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Output Noise Voltage 3.3V",
          "symbol": "eN",
          "kind": "electrical",
          "unit": "µVRMS/Hz",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "10 Hz – 40 MHz, CFILTER = 10 µf, CBP = 0.1 µf, ILOAD = 20 mA",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Shutdown Voltage Threshold 3.3V",
          "symbol": "VSD",
          "kind": "electrical",
          "unit": "V",
          "min": 2.5,
          "typ": null,
          "max": 2.7,
          "conditions": "See Figure 1-5 (Note 2)",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage to Turn-Off Output 3.3V",
          "symbol": "VOFF",
          "kind": "electrical",
          "unit": "V",
          "min": 3.9,
          "typ": null,
          "max": 4.5,
          "conditions": "",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage to Turn-On Output 3.3V",
          "symbol": "VON",
          "kind": "electrical",
          "unit": "V",
          "min": 5.25,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Slope Rising and Falling Edges",
          "symbol": "tSLOPE",
          "kind": "timing",
          "unit": "µs",
          "min": 3.5,
          "typ": null,
          "max": 22.5,
          "conditions": "7.3V ≤ VBB ≤ 18V",
          "source_page": 20,
          "source": "datasheet"
        },
        {
          "name": "Propagation Delay of Transmitter",
          "symbol": "tTRANSPD",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "tTRANSPD = max.(tTRANSPDR or tTRANSPDF)",
          "source_page": 20,
          "source": "datasheet"
        },
        {
          "name": "Propagation Delay of Receiver",
          "symbol": "tRECPD",
          "kind": "timing",
          "unit": "µs",
          "min": null,
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