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Ray Set visibility: public a47bb08 12d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "mc33972atewr2",
  "title": "MC33972ATEWR2",
  "brief": "NXP Semicon Interface - Specialized, SOIC-32-300mil. 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",
    "interface ics",
    "mc33972atewr2",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "MC33972ATEWR2",
    "manufacturer": "NXP Semicon",
    "package": "SOIC-32-300mil",
    "pin_count": 32,
    "category": "Interface ICs",
    "subcategory": "Interface - Specialized",
    "datasheet": "https://www.nxp.com/docs/en/data-sheet/MC33972ATEWR2.pdf",
    "parts": {
      "symbol": "mc33972atewr2.kicad_sym",
      "footprint": "mc33972atewr2.kicad_mod",
      "model_3d": "mc33972atewr2-hero.glb",
      "model_3d_plain": "mc33972atewr2-etched.glb",
      "model_3d_step": "mc33972atewr2-etched.step",
      "model_3d_step_plain": "mc33972atewr2.step",
      "lbr": "mc33972atewr2.lbr"
    },
    "distributor_links": {
      "lcsc": "C285344",
      "digikey": "MC33972ATEWR2TR-ND",
      "mouser": "841-MC33972ATEWR2"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T16:29:00Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "MC33972ATEWR2TR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "841-MC33972ATEWR2",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground for logic, analog, and switch to battery inputs."
      },
      {
        "number": "2",
        "name": "SI",
        "type": "input",
        "description": "SPI control data input from the MCU to the 33972, latched on the falling edge of SCLK."
      },
      {
        "number": "3",
        "name": "SCLK",
        "type": "input",
        "description": "SPI control clock input that must be held logic LOW whenever CS makes any transition."
      },
      {
        "number": "4",
        "name": "CS",
        "type": "input",
        "description": "SPI chip select input from the MCU; logic LOW allows data to be transferred in."
      },
      {
        "number": "5",
        "name": "SP0",
        "type": "input",
        "description": "Programmable switch-to-battery or switch-to-ground input compared with a 4.0 V reference."
      },
      {
        "number": "6",
        "name": "SP1",
        "type": "input",
        "description": "Programmable switch-to-battery or switch-to-ground input compared with a 4.0 V reference."
      },
      {
        "number": "7",
        "name": "SP2",
        "type": "input",
        "description": "Programmable switch-to-battery or switch-to-ground input compared with a 4.0 V reference."
      },
      {
        "number": "8",
        "name": "SP3",
        "type": "input",
        "description": "Programmable switch-to-battery or switch-to-ground input compared with a 4.0 V reference."
      },
      {
        "number": "9",
        "name": "SG0",
        "type": "input",
        "description": "Switch-to-ground input compared with a 4.0 V reference; voltages less than 4.0 V are considered closed."
      },
      {
        "number": "10",
        "name": "SG1",
        "type": "input",
        "description": "Switch-to-ground input compared with a 4.0 V reference; voltages less than 4.0 V are considered closed."
      },
      {
        "number": "11",
        "name": "SG2",
        "type": "input",
        "description": "Switch-to-ground input compared with a 4.0 V reference; voltages less than 4.0 V are considered closed."
      },
      {
        "number": "12",
        "name": "SG3",
        "type": "input",
        "description": "Switch-to-ground input compared with a 4.0 V reference; voltages less than 4.0 V are considered closed."
      },
      {
        "number": "13",
        "name": "SG4",
        "type": "input",
        "description": "Switch-to-ground input compared with a 4.0 V reference; voltages less than 4.0 V are considered closed."
      },
      {
        "number": "14",
        "name": "SG5",
        "type": "input",
        "description": "Switch-to-ground input compared with a 4.0 V reference; voltages less than 4.0 V are considered closed."
      },
      {
        "number": "15",
        "name": "SG6",
        "type": "input",
        "description": "Switch-to-ground input compared with a 4.0 V reference; voltages less than 4.0 V are considered closed."
      },
      {
        "number": "16",
        "name": "VPWR",
        "type": "power_in",
        "description": "Battery supply input that requires external reverse battery protection; maximum input voltage is 50 V."
      },
      {
        "number": "17",
        "name": "WAKE",
        "type": "bidirectional",
        "description": "Open-drain wake-up output designed to control a power supply enable pin."
      },
      {
        "number": "18",
        "name": "SG13",
        "type": "input",
        "description": "Switch-to-ground input compared with a 4.0 V reference; voltages less than 4.0 V are considered closed."
      },
      {
        "number": "19",
        "name": "SG12",
        "type": "input",
        "description": "Switch-to-ground input compared with a 4.0 V reference; voltages less than 4.0 V are considered closed."
      },
      {
        "number": "20",
        "name": "SG11",
        "type": "input",
        "description": "Switch-to-ground input compared with a 4.0 V reference; voltages less than 4.0 V are considered closed."
      },
      {
        "number": "21",
        "name": "SG10",
        "type": "input",
        "description": "Switch-to-ground input compared with a 4.0 V reference; voltages less than 4.0 V are considered closed."
      },
      {
        "number": "22",
        "name": "SG9",
        "type": "input",
        "description": "Switch-to-ground input compared with a 4.0 V reference; voltages less than 4.0 V are considered closed."
      },
      {
        "number": "23",
        "name": "SG8",
        "type": "input",
        "description": "Switch-to-ground input compared with a 4.0 V reference; voltages less than 4.0 V are considered closed."
      },
      {
        "number": "24",
        "name": "SG7",
        "type": "input",
        "description": "Switch-to-ground input compared with a 4.0 V reference; voltages less than 4.0 V are considered closed."
      },
      {
        "number": "25",
        "name": "SP4",
        "type": "input",
        "description": "Programmable switch-to-battery or switch-to-ground input compared with a 4.0 V reference."
      },
      {
        "number": "26",
        "name": "SP5",
        "type": "input",
        "description": "Programmable switch-to-battery or switch-to-ground input compared with a 4.0 V reference."
      },
      {
        "number": "27",
        "name": "SP6",
        "type": "input",
        "description": "Programmable switch-to-battery or switch-to-ground input compared with a 4.0 V reference."
      },
      {
        "number": "28",
        "name": "SP7",
        "type": "input",
        "description": "Programmable switch-to-battery or switch-to-ground input compared with a 4.0 V reference."
      },
      {
        "number": "29",
        "name": "INT",
        "type": "bidirectional",
        "description": "Open-drain output to the MCU used to indicate an input switch change of state."
      },
      {
        "number": "30",
        "name": "AMUX",
        "type": "output",
        "description": "Analog multiplex output that provides the buffered analog switch input for the MCU to read."
      },
      {
        "number": "31",
        "name": "VDD",
        "type": "power_in",
        "description": "3.3/5.0 V supply that sets the SPI communication level for the SO driver."
      },
      {
        "number": "32",
        "name": "SO",
        "type": "output",
        "description": "SPI slave out providing digital switch status data from the 33972 to the MCU."
      }
    ],
    "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: MPN MC33972ATEWR2 maps to MC33972ATEW/R2, the 32-pin SOICW (EW suffix) variant. The exposed pad (EP)"
        ],
        "pages_sent": 9,
        "cost_usd": 0.028,
        "at": "2026-10-28T16:28:44"
      },
      "datasheet": {
        "url": "https://www.nxp.com/docs/en/data-sheet/MC33972ATEWR2.pdf",
        "pages": 32,
        "sha256": "4fb56b14a3ad7a3a",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 32,
        "described": 32,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "mc33972atewr2.step",
        "role": "plain",
        "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": "e37b02fb677f0a0a4ddda9afc07165f679bc3a4469e3c55286427fcd1bc98a49",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mc33972atewr2-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "sha256": "5f628d8effb78ca120f0dae1333a056d2d9fab831c4d1221872bfb99650434f6",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "NXP Semicon",
      "Package": "SOIC-32-300mil",
      "Category": "Interface ICs",
      "Pins": "32"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "4fb56b14a3ad7a3ae3827090949b0cbf6ee2978e2a0b6c1ebbfe5c19d23305b2",
      "rows": [
        {
          "name": "Supply Voltage (CS, SI, SO, SCLK, INT, AMUX pins)",
          "symbol": "VDD",
          "kind": "absolute_maximum",
          "unit": "VDC",
          "min": -0.3,
          "typ": null,
          "max": 7,
          "conditions": "CS, SI, SO, SCLK, INT, AMUX pins",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "WAKE pin voltage",
          "symbol": "",
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          "unit": "VDC",
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          "typ": null,
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          "conditions": "WAKE pin",
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          "source": "datasheet"
        },
        {
          "name": "VPWR Supply Voltage",
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          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "VPWR Supply Voltage at -40 C",
          "symbol": "VPWR",
          "kind": "absolute_maximum",
          "unit": "VDC",
          "min": -0.3,
          "typ": null,
          "max": 45,
          "conditions": "at -40 C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Switch Input Voltage Range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "VDC",
          "min": -14,
          "typ": null,
          "max": 40,
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          "source": "datasheet"
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        {
          "name": "Frequency of SPI Operation",
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          "conditions": "VDD = 5.0 V",
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        {
          "name": "Operating Temperature Ambient",
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          "name": "Operating Temperature Junction",
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          "name": "Storage Temperature",
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          "name": "Power Dissipation",
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          "unit": "W",
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          "conditions": "TA = 25 C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Logic Supply Voltage",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3.1,
          "typ": null,
          "max": 5.25,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Supply Voltage Range Quasi-functional",
          "symbol": "VPWR(QF)",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 5.5,
          "typ": null,
          "max": 26,
          "conditions": "Quasi-functional",
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          "source": "datasheet"
        },
        {
          "name": "Supply Voltage Range Fully Operational",
          "symbol": "VPWR(FO)",
          "kind": "recommended_operating",
          "unit": "V",
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          "typ": null,
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          "conditions": "Fully Operational",
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          "source": "datasheet"
        },
        {
          "name": "Supply Current",
          "symbol": "IPWR(ON)",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2,
          "max": 4,
          "conditions": "All Switches Open, Normal Mode, Tri-state Disabled",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Sleep State Supply Current",
          "symbol": "IPWR(SS)",
          "kind": "electrical",
          "unit": "µA",
          "min": 40,
          "typ": 70,
          "max": 100,
          "conditions": "Scan Timer = 64 ms, Switches Open",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Logic Supply Current",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.25,
          "max": 0.5,
          "conditions": "All Switches Open, Normal mode",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Sleep State Logic Supply Current",
          "symbol": "IDD(SS)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 10,
          "max": 20,
          "conditions": "Scan Timer = 64 ms, Switches Open",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Pulse Wetting Current Switch-to-Battery (Current Sink)",
          "symbol": "IPULSE",
          "kind": "electrical",
          "unit": "mA",
          "min": 12,
          "typ": 15,
          "max": 18,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Pulse Wetting Current Switch-to-Ground (Current Source)",
          "symbol": "IPULSE",
          "kind": "electrical",
          "unit": "mA",
          "min": 12,
          "typ": 16,
          "max": 18,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Sustain Current Switch-to-Battery Input (Current Sink)",
          "symbol": "ISUSTAIN",
          "kind": "electrical",
          "unit": "mA",
          "min": 1.8,
          "typ": 2,
          "max": 2.2,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Sustain Current Switch-to-Ground Input (Current Source)",
          "symbol": "ISUSTAIN",
          "kind": "electrical",
          "unit": "mA",
          "min": 1.8,
          "typ": 2,
          "max": 2.2,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Sustain Current Matching Between Channels on Switch-to-Ground I/Os",
          "symbol": "IMATCH",
          "kind": "electrical",
          "unit": "%",
          "min": null,
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          "max": 4,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input Offset Current When Selected as Analog",
          "symbol": "IOFFSET",
          "kind": "electrical",
          "unit": "µA",
          "min": -2,
          "typ": 1.4,
          "max": 2,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input Offset Voltage When Selected as Analog V(SP&SGINPUTS) to AMUX Output",
          "symbol": "VOFFSET",
          "kind": "electrical",
          "unit": "mV",
          "min": -10,
          "typ": 2.5,
          "max": 10,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Analog Operational Amplifier Output Voltage Sink",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 10,
          "max": 30,
          "conditions": "Sink 250 µA",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Switch Detection Threshold",
          "symbol": "VTH",
          "kind": "electrical",
          "unit": "V",
          "min": 3.7,
          "typ": 4,
          "max": 4.3,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Switch Input Voltage Range (33972A)",
          "symbol": "VIN",
          "kind": "electrical",
          "unit": "V",
          "min": -14,
          "typ": null,
          "max": 40,
          "conditions": "33972A",
          "source_page": 6,
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