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Ray Set visibility: public 71cd1c4 11d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "ltc6820hms-3zzpbf",
  "title": "LTC6820HMS#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",
    "ltc6820hms#3zzpbf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LTC6820HMS#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/8588908544943411200",
    "parts": {
      "symbol": "ltc6820hms-3zzpbf.kicad_sym",
      "footprint": "ltc6820hms-3zzpbf.kicad_mod",
      "model_3d": "ltc6820hms-3zzpbf-hero.glb",
      "model_3d_plain": "ltc6820hms-3zzpbf-etched.glb",
      "model_3d_step": "ltc6820hms-3zzpbf-etched.step",
      "model_3d_step_plain": "ltc6820hms-3zzpbf.step",
      "lbr": "ltc6820hms-3zzpbf.lbr"
    },
    "distributor_links": {
      "lcsc": "C689578",
      "digikey": "505-LTC6820HMS#3ZZPBF-ND",
      "mouser": "584-6820HMS#3ZZPB"
    },
    "distributor_check": {
      "checked_at": "2026-10-20T10:51:56Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "505-LTC6820HMS#3ZZPBF-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "584-6820HMS#3ZZPB",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "EN",
        "type": "input",
        "description": "Device enable input: high forces the device to stay enabled, low lets it enter IDLE mode after CS has been high for 5.7ms (MSTR high) or after no signal on IP/IM for 5.7ms (MSTR low), and it wakes less than 8µs after CS falls or a signal is detected on IP/IM."
      },
      {
        "number": "2",
        "name": "MOSI",
        "type": "bidirectional",
        "description": "SPI Master Out/Slave In data; the output is open drain, so an external pull-up resistor to VDDS is required."
      },
      {
        "number": "3",
        "name": "MISO",
        "type": "bidirectional",
        "description": "SPI Master In/Slave Out data; the output is open drain, so an external pull-up resistor to VDDS is required."
      },
      {
        "number": "4",
        "name": "SCK",
        "type": "bidirectional",
        "description": "SPI clock input when MSTR is high (must not be pulled above VDDS) or push-pull clock output when MSTR is low, requiring no external pull-up."
      },
      {
        "number": "5",
        "name": "CS",
        "type": "bidirectional",
        "description": "SPI chip select input when MSTR is high (must not be pulled above VDDS) or push-pull output 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, connect a bypass capacitor of at least 0.01µF directly between VDDS and GND."
      },
      {
        "number": "7",
        "name": "POL",
        "type": "input",
        "description": "SPI clock polarity input that must be tied to VDD or GND."
      },
      {
        "number": "8",
        "name": "PHA",
        "type": "input",
        "description": "SPI clock phase 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); connect a bypass capacitor of at least 0.01µF directly between VDD and GND."
      },
      {
        "number": "10",
        "name": "IM",
        "type": "bidirectional",
        "description": "Isolated interface minus input/output; IP and IM maximum source/sink current is 30mA."
      },
      {
        "number": "11",
        "name": "IP",
        "type": "bidirectional",
        "description": "Isolated interface plus input/output; IP and IM maximum source/sink current is 30mA."
      },
      {
        "number": "12",
        "name": "MSTR",
        "type": "input",
        "description": "Master/slave selector: tie to VDD if the device is on the master side of the isolated interface and to GND if on the slave side."
      },
      {
        "number": "13",
        "name": "SLOW",
        "type": "input",
        "description": "Slow interface selection: tie 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."
      },
      {
        "number": "15",
        "name": "ICMP",
        "type": "input",
        "description": "Isolated interface comparator voltage threshold set: tie to the resistor divider between IBIAS and GND; the comparator thresholds are set to 1/2 the voltage on this pin."
      },
      {
        "number": "16",
        "name": "IBIAS",
        "type": "passive",
        "description": "Isolated interface current bias: tie to GND through a resistor divider to set output current (about 2V when enabled, sink current on IP/IM is 20 times the IBIAS current), and limit capacitance to less than 50pF."
      }
    ],
    "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: Pin numbers were taken from the MSOP column of the PIN FUNCTIONS table (page 9) and the MSOP pin con; Pin types are engineering classifications. MOSI, MISO, SCK, CS and IP/IM change direction with the M; The datasheet pages provided (1, 2, 3, 8, 9, 10) do not include the mechanical drawing or pin-1 orie"
        ],
        "pages_sent": 6,
        "cost_usd": 0.0578,
        "at": "2026-10-20T10:51:36"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588908544943411200",
        "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": "ltc6820hms-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": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ltc6820hms-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": "9ad2f8198dc301a694741fbfd277dfe3aeb5a069dbd366909c8732c83df63b2b",
        "checked": "2026-10-20",
        "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, READY/ACTIVE States",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "mA",
          "min": 4,
          "typ": null,
          "max": 4.8,
          "conditions": "RBIAS = 2kΩ (IB = 1mA), 1/tCLK = 0MHz",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply Current, READY/ACTIVE States",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "mA",
          "min": 5.8,
          "typ": null,
          "max": 7,
          "conditions": "RBIAS = 2kΩ (IB = 1mA), 1/tCLK = 1MHz",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply Current, READY/ACTIVE States",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "mA",
          "min": 1.3,
          "typ": null,
          "max": 2,
          "conditions": "RBIAS = 20kΩ (IB = 0.1mA), 1/tCLK = 0MHz",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply Current, READY/ACTIVE States",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "mA",
          "min": 2.4,
          "typ": null,
          "max": 2.9,
          "conditions": "RBIAS = 20kΩ (IB = 0.1mA), 1/tCLK = 1MHz",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply Current, IDLE State",
          "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",
          "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": "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",
          "symbol": "VA",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.6,
          "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": "",
          "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": "Digital Pin Input Leakage Current",
          "symbol": "ILEAK(DIG)",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "PHA, POL, MSTR, SLOW = 0V to VDD; CS, SCK, MOSI, MISO, EN = 0V to VDDS",
          "source_page": 4,
          "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 (tCLK)",
          "symbol": "tCLK",
          "kind": "timing",
          "unit": "µs",
          "min": 0.5,
          "typ": null,
          "max": null,
          "conditions": "SLOW = 0",
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