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Ray Set visibility: public fb72db3 11d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "ltc6820ims-3zzpbf",
  "title": "LTC6820IMS#3ZZPBF",
  "brief": "Analog Devices Interface - Specialized, MSOP-16. 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",
    "ltc6820ims#3zzpbf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LTC6820IMS#3ZZPBF",
    "manufacturer": "Analog Devices",
    "package": "MSOP-16",
    "pin_count": 16,
    "category": "Communication Interface Chip/UART/485/232",
    "subcategory": "Interface - Specialized",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588908170496651265",
    "parts": {
      "symbol": "ltc6820ims-3zzpbf.kicad_sym",
      "footprint": "ltc6820ims-3zzpbf.kicad_mod",
      "model_3d": "ltc6820ims-3zzpbf-hero.glb",
      "model_3d_plain": "ltc6820ims-3zzpbf-etched.glb",
      "model_3d_step": "ltc6820ims-3zzpbf-etched.step",
      "model_3d_step_plain": "ltc6820ims-3zzpbf.step",
      "lbr": "ltc6820ims-3zzpbf.lbr"
    },
    "distributor_links": {
      "lcsc": "C689582",
      "digikey": "505-LTC6820IMS#3ZZPBF-ND",
      "mouser": "584-6820IMS#3ZZPB"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T00:25:54Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "505-LTC6820IMS#3ZZPBF-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "584-6820IMS#3ZZPB",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "EN",
        "type": "input",
        "description": "Device enable input: when high it forces the device to stay enabled, and when low the device enters IDLE after CS has been high for 5.7ms (MSTR high) or after no signal on IP/IM for 5.7ms (MSTR low), with logic thresholds set by VDDS."
      },
      {
        "number": "2",
        "name": "MOSI",
        "type": "bidirectional",
        "description": "SPI Master Out/Slave In data, an open-drain pin that requires an external pull-up resistor to VDDS and receives master data when MSTR is high or drives the slave input when MSTR is low."
      },
      {
        "number": "3",
        "name": "MISO",
        "type": "bidirectional",
        "description": "SPI Master In/Slave Out data, an open-drain pin that requires an external pull-up resistor to VDDS and drives the master input when MSTR is high or receives slave output when MSTR is low."
      },
      {
        "number": "4",
        "name": "SCK",
        "type": "bidirectional",
        "description": "SPI clock that is an input which must not be pulled above VDDS when MSTR is high, or a push-pull output to the slave device when MSTR is low, requiring no external pull-up."
      },
      {
        "number": "5",
        "name": "CS",
        "type": "bidirectional",
        "description": "SPI chip select that is an input which must not be pulled above VDDS when MSTR is high, or a push-pull output to the slave device when MSTR is low, requiring no external pull-up."
      },
      {
        "number": "6",
        "name": "VDDS",
        "type": "power_in",
        "description": "SPI input/output supply (1.7V to 5.5V) that powers the SCK and CS output drivers and sets the input thresholds of SCK, CS, MOSI, MISO and EN; if separate from VDD, a bypass capacitor of at least 0.01µF must connect directly between VDDS and GND."
      },
      {
        "number": "7",
        "name": "POL",
        "type": "input",
        "description": "SPI clock polarity configuration input that must be tied to VDD or GND."
      },
      {
        "number": "8",
        "name": "PHA",
        "type": "input",
        "description": "SPI clock phase configuration input that must be tied to VDD or GND."
      },
      {
        "number": "9",
        "name": "VDD",
        "type": "power_in",
        "description": "Device power supply input (2.7V to 5.5V) that requires a bypass capacitor of at least 0.01µF connected directly between VDD and GND."
      },
      {
        "number": "10",
        "name": "IM",
        "type": "bidirectional",
        "description": "Isolated interface minus input/output that forms the differential pair with IP; during transmission its sink current is 20 times the current sourced from IBIAS, and the absolute maximum source/sink current for IP and IM is 30mA."
      },
      {
        "number": "11",
        "name": "IP",
        "type": "bidirectional",
        "description": "Isolated interface plus input/output that forms the differential pair with IM; during transmission its sink current is 20 times the current sourced from IBIAS, and the absolute maximum source/sink current for IP and IM is 30mA."
      },
      {
        "number": "12",
        "name": "MSTR",
        "type": "input",
        "description": "Master/slave selector input that must be tied to VDD for the master side of the isolated interface and to GND for the slave side."
      },
      {
        "number": "13",
        "name": "SLOW",
        "type": "input",
        "description": "Slow interface selection input that must be tied to VDD for clock frequencies at or below 200kHz (or if slave devices cannot meet timing) and to GND for clock frequencies above 200kHz."
      },
      {
        "number": "14",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference for all supply and signal voltages."
      },
      {
        "number": "15",
        "name": "ICMP",
        "type": "input",
        "description": "Isolated interface comparator threshold-setting input, driven from a resistor divider between IBIAS and GND, where the receiver comparator thresholds are set to 1/2 the ICMP voltage and ICMP is specified from 0.2V to 1.5V."
      },
      {
        "number": "16",
        "name": "IBIAS",
        "type": "passive",
        "description": "Isolated interface current bias pin, connected to GND through a resistor divider to set output current, which sits at approximately 2V when enabled and whose capacitance must be kept below 50pF for feedback stability."
      }
    ],
    "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 MSOP pin numbers were derived from the MSOP top-view drawing on page 2 (1 EN through 16 IBIAS) a; The datasheet gives no explicit pin type classification. Types were chosen per KiCad ERC conventions; The ordering information on page 2 confirms LTC6820IMS#3ZZPBF is the 16-lead plastic MSOP automotive"
        ],
        "pages_sent": 6,
        "cost_usd": 0.0568,
        "at": "2026-10-21T00:21:49"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588908170496651265",
        "pages": 30,
        "sha256": "81e209e79f6c137d",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ltc6820ims-3zzpbf.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          4.039,
          0.95
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "53aec19b531c5ed5b9a5d8fef387389bff1661eb536898003c89ef73882b28a0",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ltc6820ims-3zzpbf-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          4.039,
          0.95
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "dd3952378571067f484db7929109494d474c03cf77e2bf244571e71545a5bd6d",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Analog Devices",
      "Package": "MSOP-16",
      "Category": "Communication Interface Chip/UART/485/232",
      "Pins": "16"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "81e209e79f6c137d2ec3f0cea2015947c4b4eb96b0f7b0bd156e8d0d33623912",
      "rows": [
        {
          "name": "VDD Operating Supply Voltage Range",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.7,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "VDDS IO Supply Voltage Range (Level Shifting)",
          "symbol": "VDDS",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.7,
          "typ": null,
          "max": 5.5,
          "conditions": "Affects CS, SCK, MOSI, MISO and EN pins",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply Current, IDLE State (MSTR = 0V)",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 2,
          "max": 6,
          "conditions": "MSTR = 0V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply Current, IDLE State (MSTR = VDD)",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 1,
          "max": 3,
          "conditions": "MSTR = VDD",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "IO Supply Current",
          "symbol": "IDDS",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "SPI Inputs and EN Pin at 0V or VDDS, SPI Outputs Unloaded",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Voltage on IBIAS Pin, READY/ACTIVE State",
          "symbol": "VBIAS",
          "kind": "electrical",
          "unit": "V",
          "min": 1.9,
          "typ": 2,
          "max": 2.1,
          "conditions": "READY/ACTIVE State",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Voltage on IBIAS Pin, IDLE State",
          "symbol": "VBIAS",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0,
          "max": null,
          "conditions": "IDLE State",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Isolated Interface Current Gain",
          "symbol": "AIB",
          "kind": "electrical",
          "unit": "mA/mA",
          "min": 18,
          "typ": 20,
          "max": 22,
          "conditions": "VA ≤ 1.6V, IB = 1mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Isolated Interface Current Gain",
          "symbol": "AIB",
          "kind": "electrical",
          "unit": "mA/mA",
          "min": 18,
          "typ": 20,
          "max": 24,
          "conditions": "VA ≤ 1.6V, IB = 0.1mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Transmitter Pulse Amplitude (VDD ≥ 3.3V)",
          "symbol": "VA",
          "kind": "electrical",
          "unit": "V",
          "min": 1.6,
          "typ": null,
          "max": null,
          "conditions": "VA = |VIP – VIM|, VDD ≥ 3.3V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Threshold-Setting Voltage on ICMP Pin",
          "symbol": "VICMP",
          "kind": "electrical",
          "unit": "V",
          "min": 0.2,
          "typ": null,
          "max": 1.5,
          "conditions": "VTCMP = ATCMP • VICMP",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Leakage Current on ICMP Pin",
          "symbol": "ILEAK(ICMP)",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "VICMP = 0V to VDD",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Leakage Current on IP and IM Pins",
          "symbol": "ILEAK(IP/IM)",
          "kind": "electrical",
          "unit": "µA",
          "min": -2,
          "typ": null,
          "max": 2,
          "conditions": "IDLE State, VIP = VIM = 0V to VDD",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Receiver Comparator Threshold Voltage Gain",
          "symbol": "ATCMP",
          "kind": "electrical",
          "unit": "V/V",
          "min": 0.4,
          "typ": 0.5,
          "max": 0.6,
          "conditions": "VCM = VDD/2 to VDD – 0.2V, VICMP = 0.2V to 1.5V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Receiver Input Resistance",
          "symbol": "RIN",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 26,
          "typ": 35,
          "max": 42,
          "conditions": "Single-Ended to IP or IM",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Differential Wake-Up Voltage",
          "symbol": "VWAKE",
          "kind": "electrical",
          "unit": "mV",
          "min": 240,
          "typ": null,
          "max": null,
          "conditions": "tDWELL = 240ns",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Dwell Time at VWAKE",
          "symbol": "tDWELL",
          "kind": "timing",
          "unit": "ns",
          "min": 240,
          "typ": null,
          "max": null,
          "conditions": "VWAKE = 240mV",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Start-Up Time After Wake Detection",
          "symbol": "tREADY",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": null,
          "max": 8,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Idle Time-Out Duration",
          "symbol": "tIDLE",
          "kind": "timing",
          "unit": "ms",
          "min": 4,
          "typ": 5.7,
          "max": 7.5,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Digital Voltage Input High, EN Pin",
          "symbol": "VIH(EN)",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "VDDS = 2.7V to 5.5V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Digital Voltage Input Low, EN Pin",
          "symbol": "VIL(EN)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "VDDS = 2.7V to 5.5V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Digital Voltage Output Low (MOSI, MISO, CS, SCK)",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "VDDS = 3.3V, sinking 3.3mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Chip-Select Half-Pulse Width",
          "symbol": "t1/2PW(CS)",
          "kind": "timing",
          "unit": "ns",
          "min": 120,
          "typ": 150,
          "max": 180,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Chip-Select Pulse Inversion Delay",
          "symbol": "tINV(CS)",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Chip-Select Response Delay",
          "symbol": "tDEL(CS)",
          "kind": "timing",
          "unit": "ns",
          "min": 140,
          "typ": null,
          "max": 190,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Data Half-Pulse Width",
          "symbol": "t½PW(D)",
          "kind": "timing",
          "unit": "ns",
          "min": 40,
          "typ": 50,
          "max": 60,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Data Pulse Inversion Delay",
          "symbol": "tINV(D)",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 70,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Data Response Delay",
          "symbol": "tDEL(D)",
          "kind": "timing",
          "unit": "ns",
          "min": 75,
          "typ": null,
          "max": 120,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "SCK Latching Edge to SCK Latching Edge (master tCLK)",
          "symbol": "tCLK",
          "kind": "timing",
          "unit": "µs",
          "min": 0.5,
          "typ": null,
          "max": null,
          "conditions": "SLOW = 0",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "SCK Latching Edge to SCK Latching Edge (master tCLK)",
          "symbol": "tCLK",
          "kind": "timing",
          "unit": "µs",
          "min": 5,
          "typ": null,
          "max": null,
          "conditions": "SLOW = 1",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "MOSI Setup Time Before SCK Latching Edge",
          "symbol": "t1",
          "kind": "timing",
          "unit": "ns",
          "min": 25,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "MOSI Hold Time After SCK Latching Edge",
          "symbol": "t2",
          "kind": "timing",
          "unit": "ns",
          "min": 25,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "SCK Low",
          "symbol": "t3",
          "kind": "timing",
          "unit": "ns",
          "min": 50,
          "typ": null,
          "max": null,
          "conditions": "tCLK = t3 + t4 ≥ 0.5µs",
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