ISD4002-120PY

{
  "schema_version": 1,
  "type": "component",
  "slug": "isd4002-120py",
  "title": "ISD4002-120PY",
  "brief": "Nuvoton Tech Audio Interface ICs, DIP-28. 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",
    "isd4002-120py",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "ISD4002-120PY",
    "manufacturer": "Nuvoton Tech",
    "package": "DIP-28",
    "pin_count": 28,
    "category": "Communication Interface Chip/UART/485/232",
    "subcategory": "Audio Interface ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/9fb3d15d65378bc8e4078697458f8f58.pdf",
    "parts": {
      "symbol": "isd4002-120py.kicad_sym",
      "footprint": "isd4002-120py.kicad_mod",
      "model_3d": "isd4002-120py-hero.glb",
      "model_3d_plain": "isd4002-120py-etched.glb",
      "model_3d_step": "isd4002-120py-etched.step",
      "model_3d_step_plain": "isd4002-120py.step",
      "lbr": "isd4002-120py.lbr"
    },
    "distributor_links": {
      "lcsc": "C2613383",
      "digikey": "ISD4002-120PY-ND",
      "mouser": "503-ISD4002-120PY"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T17:05:06Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "ISD4002-120PY-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "503-ISD4002-120PY",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SS",
        "type": "input",
        "description": "Slave Select: when LOW, this input selects the ISD4002 device."
      },
      {
        "number": "2",
        "name": "MOSI",
        "type": "input",
        "description": "Master Out Slave In: serial data input to the device in slave mode, with data placed by the master one half-cycle before the SCLK rising edge."
      },
      {
        "number": "3",
        "name": "MISO",
        "type": "tri_state",
        "description": "Master In Slave Out: serial data output of the device, which goes to a high-impedance state when the device is not selected."
      },
      {
        "number": "4",
        "name": "VSSD",
        "type": "power_in",
        "description": "Digital ground, connected through a separate low-impedance path to power supply ground, with impedance to the VSSA pins less than 3 Ω."
      },
      {
        "number": "5",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "6",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "7",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "8",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "9",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "10",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "11",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground, to be tied together with the other VSSA pins as close as possible and connected through a low-impedance path to power supply ground."
      },
      {
        "number": "12",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground, to be tied together with the other VSSA pins as close as possible and connected through a low-impedance path to power supply ground."
      },
      {
        "number": "13",
        "name": "AUD OUT",
        "type": "output",
        "description": "Audio output of the stored data, recommended to be AC coupled and capable of driving a load as small as 5 kΩ in playback; the pin is always at 1.2 V when powered up."
      },
      {
        "number": "14",
        "name": "AM CAP",
        "type": "passive",
        "description": "AutoMute capacitor pin, where a 1 µF capacitor to ground is recommended; connecting this pin directly to VCCA disables the AutoMute feature."
      },
      {
        "number": "15",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "16",
        "name": "ANA IN-",
        "type": "input",
        "description": "Inverting analog input for differential recording, with a 16 mVp-p maximum input signal and a normal input impedance of 56 kΩ."
      },
      {
        "number": "17",
        "name": "ANA IN+",
        "type": "input",
        "description": "Non-inverting analog input for recording, with a 32 mVp-p maximum signal in single-ended mode and 16 mVp-p maximum in differential mode."
      },
      {
        "number": "18",
        "name": "VCCA",
        "type": "power_in",
        "description": "Analog +3 V supply, to be tied together with VCCD as close to the supply as possible and decoupled close to the package."
      },
      {
        "number": "19",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "20",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "21",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "22",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "23",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground, to be tied together with the other VSSA pins as close as possible and connected through a low-impedance path to power supply ground."
      },
      {
        "number": "24",
        "name": "RAC",
        "type": "output",
        "description": "Row Address Clock, an open-drain output with a 200 ms period at 8 kHz sampling that requires a pull-up resistor to connect to other devices."
      },
      {
        "number": "25",
        "name": "INT",
        "type": "output",
        "description": "Interrupt, an open-drain output that goes and stays LOW on an Overflow or End of Message marker and requires a pull-up resistor."
      },
      {
        "number": "26",
        "name": "XCLK",
        "type": "input",
        "description": "External clock input, which for the ISD4002-120 is 1024 kHz and must be connected to ground if not used."
      },
      {
        "number": "27",
        "name": "VCCD",
        "type": "power_in",
        "description": "Digital +3 V supply, to be tied together with VCCA as close to the supply as possible and decoupled close to the package."
      },
      {
        "number": "28",
        "name": "SCLK",
        "type": "input",
        "description": "Serial Clock input from the master device, with data latched on the rising edge and shifted out on the falling edge."
      }
    ],
    "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 configuration figure (page 5) is a text extraction in which the SOIC/PDIP pin layout is shar; The NC pins are listed as 5-10, 15, 19-22 in the datasheet, and each is shown here as a separate ent; The datasheet states that RAC and INT are open-drain outputs and MISO is not open-drain (version his"
        ],
        "pages_sent": 14,
        "cost_usd": 0.0679,
        "at": "2026-10-30T17:04:54"
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        "pages": 33,
        "sha256": "d68fa2e09a581f87",
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 28,
        "described": 28,
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        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
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        "sha256": "7bf4503e368ad9b7a3eddfa94bc8dee656da5d6921b677e17307b3d7f29177ab",
        "checked": "2026-10-30",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Nuvoton Tech",
      "Package": "DIP-28",
      "Category": "Communication Interface Chip/UART/485/232",
      "Pins": "28"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "d68fa2e09a581f878dbaea86233f748732b36a355535d0fa4f176f4aa2303c83",
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        {
          "name": "Supply voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.7,
          "typ": null,
          "max": 3.3,
          "conditions": "[1] VCC = VCCA = VCCD",
          "source_page": 19,
          "source": "datasheet"
        },
        {
          "name": "Commercial operating temperature range (case)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "ºC",
          "min": 0,
          "typ": null,
          "max": 70,
          "conditions": "Commercial packaged units",
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        {
          "name": "Supply voltage VCC - VSS",
          "symbol": "VCC - VSS",
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        {
          "name": "Voltage applied to MOSI, SCLK, and SS pins",
          "symbol": "",
          "kind": "absolute_maximum",
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          "max": 5.5,
          "conditions": "Input current limited to ±20mA",
          "source_page": 18,
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        {
          "name": "Junction temperature",
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        {
          "name": "Storage temperature range",
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          "min": -65,
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        {
          "name": "Lead temperature (soldering)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "ºC",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "soldering – 10 seconds",
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        },
        {
          "name": "Output Low Voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
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          "max": 0.4,
          "conditions": "IOL = 10 µA",
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        },
        {
          "name": "RAC, INT Output Low Voltage",
          "symbol": "VOL1",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "IOL = 1 mA",
          "source_page": 20,
          "source": "datasheet"
        },
        {
          "name": "VCC Current (Operating) - Playback",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 15,
          "max": 30,
          "conditions": "Playback; REXT = ∞ [3]",
          "source_page": 20,
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        },
        {
          "name": "VCC Current (Operating) - Record",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 25,
          "max": 40,
          "conditions": "Record; REXT = ∞ [3]",
          "source_page": 20,
          "source": "datasheet"
        },
        {
          "name": "VCC Current (Standby)",
          "symbol": "ISB",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 1,
          "max": 10,
          "conditions": "[3] [4]",
          "source_page": 20,
          "source": "datasheet"
        },
        {
          "name": "Input Leakage Current",
          "symbol": "IIL",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "",
          "source_page": 20,
          "source": "datasheet"
        },
        {
          "name": "MISO Tristate Current",
          "symbol": "IHZ",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 1,
          "max": 10,
          "conditions": "",
          "source_page": 20,
          "source": "datasheet"
        },
        {
          "name": "Output Load Impedance",
          "symbol": "REXT",
          "kind": "electrical",
          "unit": "KΩ",
          "min": 5,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 20,
          "source": "datasheet"
        },
        {
          "name": "ANA IN+ Input Resistance",
          "symbol": "RANA IN+",
          "kind": "electrical",
          "unit": "KΩ",
          "min": 2.2,
          "typ": 3,
          "max": 3.8,
          "conditions": "",
          "source_page": 20,
          "source": "datasheet"
        },
        {
          "name": "ANA IN- Input Resistance",
          "symbol": "RANA IN-",
          "kind": "electrical",
          "unit": "KΩ",
          "min": 40,
          "typ": 56,
          "max": 71,
          "conditions": "",
          "source_page": 20,
          "source": "datasheet"
        },
        {
          "name": "ANA IN+ or ANA IN- to AUD OUT Gain",
          "symbol": "AARP",
          "kind": "electrical",
          "unit": "dB",
          "min": 20,
          "typ": 23,
          "max": 26,
          "conditions": "1 KHz sinewave input [5]",
          "source_page": 20,
          "source": "datasheet"
        },
        {
          "name": "Sampling Frequency (ISD4002-120)",
          "symbol": "FS",
          "kind": "electrical",
          "unit": "KHz",
          "min": null,
          "typ": 8,
          "max": null,
          "conditions": "[5]",
          "source_page": 21,
          "source": "datasheet"
        },
        {
          "name": "Filter Pass Band (ISD4002-120)",
          "symbol": "FCF",
          "kind": "electrical",
          "unit": "KHz",
          "min": null,
          "typ": 3.4,
          "max": null,
          "conditions": "3 dB Roll-Off Point [3][7]",
          "source_page": 21,
          "source": "datasheet"
        },
        {
          "name": "Record Duration (ISD4002-120)",
          "symbol": "TREC",
          "kind": "timing",
          "unit": "sec",
          "min": null,
          "typ": 120,
          "max": null,
          "conditions": "[6]",
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        },
        {
          "name": "Playback Duration (ISD4002-120)",
          "symbol": "TPLAY",
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          "min": null,
          "typ": 120,
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          "name": "Power-Up Delay (ISD4002-120)",
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          "max": null,
          "conditions": "",
          "source_page": 21,
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        {
          "name": "Stop or Pause in Record or Play (ISD4002-120)",
          "symbol": "TSTOP or TPAUSE",
          "kind": "timing",
          "unit": "msec",
          "min": null,
          "typ": 50,
          "max": null,
          "conditions": "",
          "source_page": 21,
          "source": "datasheet"
        },
        {
          "name": "RAC Clock Period (ISD4002-120)",
          "symbol": "TRAC",
          "kind": "timing",
          "unit": "msec",
          "min": null,
          "typ": 200,
          "max": null,
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          "source_page": 21,
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        },
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          "name": "RAC Clock Low Time (ISD4002-120)",
          "symbol": "TRACL",
          "kind": "timing",
          "unit": "msec",
          "min": null,
          "typ": 25,
          "max": null,
          "conditions": "",
          "source_page": 21,
          "source": "datasheet"
        },
        {
          "name": "RAC Clock Period in Message Cueing Mode (ISD4002-120)",
          "symbol": "TRACM",
          "kind": "timing",
          "unit": "µsec",
          "min": null,
          "typ": 125,
          "max": null,
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          "source_page": 21,
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        },
        {
          "name": "RAC Clock Low Time in Message Cueing Mode (ISD4002-120)",
          "symbol": "TRACML",
          "kind": "timing",
          "unit": "µsec",
          "min": null,
          "typ": 15.63,
          "max": null,
          "conditions": "",
          "source_page": 21,
          "source": "datasheet"
        },
        {
          "name": "Total Harmonic Distortion",
          "symbol": "THD",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 1,
          "max": 2,
          "conditions": "@ 1 KHz sinewave",
          "source_page": 21,
          "source": "datasheet"
        },
        {
          "name": "ANA IN Input Voltage",
          "symbol": "VIN",
          "kind": "electrical",
          "unit": "mV Peak-to-Peak",
          "min": null,
          "typ": null,
          "max": 32,
          "conditions": "[4] [8] [9]",
          "source_page": 21,
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