CA-IS3741LB

{
  "schema_version": 1,
  "type": "component",
  "slug": "ca-is3741lb",
  "title": "CA-IS3741LB",
  "brief": "Chipanalog Digital Isolators, SSOP-16-150mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "communication interface chip-uart-485-232",
    "ca-is3741lb",
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  "component": {
    "mpn": "CA-IS3741LB",
    "manufacturer": "Chipanalog",
    "package": "SSOP-16-150mil",
    "pin_count": 16,
    "category": "Communication Interface Chip/UART/485/232",
    "subcategory": "Digital Isolators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/a47611d83f8b8be5a0525e8630cfd482.pdf",
    "parts": {
      "symbol": "ca-is3741lb.kicad_sym",
      "footprint": "ca-is3741lb.kicad_mod",
      "model_3d": "ca-is3741lb-hero.glb",
      "model_3d_plain": "ca-is3741lb-etched.glb",
      "model_3d_step": "ca-is3741lb-etched.step",
      "model_3d_step_plain": "ca-is3741lb.step",
      "lbr": "ca-is3741lb.lbr"
    },
    "distributor_links": {
      "lcsc": "C3202820"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T23:06:58Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 663 calls left today"
      },
      "mouser": {
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        "status": "quota"
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    },
    "pins": [
      {
        "number": "1",
        "name": "VDDA",
        "type": "power_in",
        "description": "Side A supply voltage, 2.375 V to 5.5 V recommended, with a 0.1 µF to 1 µF bypass capacitor."
      },
      {
        "number": "2",
        "name": "GNDA",
        "type": "power_in",
        "description": "Side A ground reference."
      },
      {
        "number": "3",
        "name": "VI1",
        "type": "input",
        "description": "Side A logic input for channel 1."
      },
      {
        "number": "4",
        "name": "VI2",
        "type": "input",
        "description": "Side A logic input for channel 2."
      },
      {
        "number": "5",
        "name": "VI3",
        "type": "input",
        "description": "Side A logic input for channel 3 (CA-IS3741 forward channel)."
      },
      {
        "number": "6",
        "name": "VO4",
        "type": "output",
        "description": "Side A logic output for channel 4 (CA-IS3741 reverse channel), tri-stated when ENA is low."
      },
      {
        "number": "7",
        "name": "ENA",
        "type": "input",
        "description": "Side A output enable, active high or floating, internally pulled up to VDDA; low puts VO4 in high impedance."
      },
      {
        "number": "8",
        "name": "GNDA",
        "type": "power_in",
        "description": "Side A ground reference."
      },
      {
        "number": "9",
        "name": "GNDB",
        "type": "power_in",
        "description": "Side B ground reference."
      },
      {
        "number": "10",
        "name": "ENB",
        "type": "input",
        "description": "Side B output enable, active high or floating, internally pulled up to VDDB; low puts VO1 to VO3 in high impedance."
      },
      {
        "number": "11",
        "name": "VI4",
        "type": "input",
        "description": "Side B logic input for channel 4 (CA-IS3741 reverse channel)."
      },
      {
        "number": "12",
        "name": "VO3",
        "type": "output",
        "description": "Side B logic output for channel 3, tri-stated when ENB is low."
      },
      {
        "number": "13",
        "name": "VO2",
        "type": "output",
        "description": "Side B logic output for channel 2, tri-stated when ENB is low."
      },
      {
        "number": "14",
        "name": "VO1",
        "type": "output",
        "description": "Side B logic output for channel 1, tri-stated when ENB is low."
      },
      {
        "number": "15",
        "name": "GNDB",
        "type": "power_in",
        "description": "Side B ground reference."
      },
      {
        "number": "16",
        "name": "VDDB",
        "type": "power_in",
        "description": "Side B supply voltage, 2.375 V to 5.5 V recommended, with a 0.1 µF to 1 µF bypass capacitor."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
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        "primary_model": "claude-sonnet-5-5",
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pin table is shared by CA-IS3740/41/42, so CA-IS3741 pin functions were taken from the CA-IS3741"
        ],
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        "cost_usd": 0.2347,
        "at": "2026-10-22T23:06:44"
      },
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
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    },
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      "footprint": "viewers/footprint.html"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Chipanalog",
      "Package": "SSOP-16-150mil",
      "Category": "Communication Interface Chip/UART/485/232",
      "Pins": "16"
    },
    "characteristics": {
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          "symbol": "VDDA, VDDB",
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          "min": -0.5,
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        {
          "name": "Storage temperature",
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          "min": -65,
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        {
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        {
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          "conditions": "JESD22-C101, all pins",
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          "conditions": "typ 3.3/5.0",
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        {
          "name": "UVLO rising threshold",
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          "typ": 2.24,
          "max": 2.37,
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          "name": "UVLO falling threshold",
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          "typ": 2.1,
          "max": 2.325,
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        {
          "name": "UVLO hysteresis",
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          "unit": "mV",
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          "typ": 140,
          "max": 250,
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        {
          "name": "High-level output current",
          "symbol": "IOH",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": -4,
          "typ": null,
          "max": null,
          "conditions": "VDDO = 5V (-2 at 3.3V, -1 at 2.5V)",
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          "name": "Low-level output current",
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          "kind": "recommended_operating",
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          "conditions": "VDDO = 5V (2 at 3.3V, 1 at 2.5V)",
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        {
          "name": "Input threshold logic high",
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          "kind": "recommended_operating",
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          "min": 2,
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        {
          "name": "Input threshold logic low",
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          "kind": "recommended_operating",
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          "max": 0.8,
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          "name": "Signaling rate",
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        {
          "name": "Ambient temperature",
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          "min": -40,
          "typ": 27,
          "max": 125,
          "conditions": "",
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          "kind": "thermal",
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          "typ": 110,
          "max": null,
          "conditions": "SSOP16-NB(B)",
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        {
          "name": "Maximum power dissipation",
          "symbol": "PD",
          "kind": "thermal",
          "unit": "mW",
          "min": null,
          "typ": null,
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          "conditions": "CA-IS3741; VDDA = VDDB = 5.5 V, CL = 15 pF, TJ = 150°C, 75MHz 50% duty square wave",
          "source_page": 6,
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        },
        {
          "name": "Side A max power dissipation",
          "symbol": "PDA",
          "kind": "thermal",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "CA-IS3741",
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          "name": "Side B max power dissipation",
          "symbol": "PDB",
          "kind": "thermal",
          "unit": "mW",
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          "conditions": "CA-IS3741",
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        {
          "name": "Output voltage high",
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          "kind": "electrical",
          "unit": "V",
          "min": -0.4,
          "typ": 4.8,
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          "conditions": "VDDA = VDDB = 5V±10%; IOH = -4mA; min is VDDO-0.4",
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        {
          "name": "Output voltage low",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.2,
          "max": 0.4,
          "conditions": "VDDA = VDDB = 5V±10%; IOL = 4mA",
          "source_page": 9,
          "source": "datasheet"
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        {
          "name": "Input threshold logic high",
          "symbol": "VIT+(IN)",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "VDDA = VDDB = 5V±10%",
          "source_page": 9,
          "source": "datasheet"
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        {
          "name": "Input threshold logic low",
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          "conditions": "VDDA = VDDB = 5V±10%",
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        {
          "name": "Input high leakage current",
          "symbol": "IIH",
          "kind": "electrical",
          "unit": "µA",
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          "max": 20,
          "conditions": "VIH = VDDA at Ax or Bx or ENx",
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        {
          "name": "Input low leakage current",
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          "kind": "electrical",
          "unit": "µA",
          "min": -20,
          "typ": null,
          "max": null,
          "conditions": "VIL = 0 V at Ax or Bx or ENx",
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        {
          "name": "Output impedance",
          "symbol": "ZO",
          "kind": "electrical",
          "unit": "Ω",
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          "typ": 50,
          "max": null,
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          "source_page": 9,
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        {
          "name": "Common-mode transient immunity",
          "symbol": "CMTI",
          "kind": "electrical",
          "unit": "kV/µs",
          "min": 100,
          "typ": 150,
          "max": null,
          "conditions": "VI = VDDI or 0 V, VCM = 1200 V",
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          "name": "Input capacitance",
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          "unit": "pF",
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          "typ": 2,
          "max": null,
          "conditions": "VI = VDD/2 + 0.4×sin(2πft), f = 1 MHz, VDD = 5 V",
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          "source": "datasheet"
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        {
          "name": "Output voltage high",
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          "kind": "electrical",
          "unit": "V",
          "min": -0.4,
          "typ": 3.1,
          "max": null,
          "conditions": "VDDA = VDDB = 3.3V±10%; IOH = -2mA; min is VDDO-0.4",
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        {
          "name": "Output voltage high",
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          "conditions": "VDDA = VDDB = 2.5V±5%; IOH = -1mA; min is VDDO-0.4",
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        {
          "name": "IDDA enable off, VIN low (L)",
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          "kind": "electrical",
          "unit": "mA",
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          "conditions": "CA-IS3741; 5V; ENA = ENB = 0 V; VIN = 0V",
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        {
          "name": "IDDB enable off, VIN low (L)",
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          "conditions": "CA-IS3741; 5V; ENA = ENB = 0 V; VIN = 0V",
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          "name": "IDDA DC signal, VIN = VDDI (L)",
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          "name": "IDDB DC signal, VIN = VDDI (L)",
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        {
          "name": "IDDA 1Mbps",
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          "unit": "mA",
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          "typ": 3.3,
          "max": 5.2,
          "conditions": "CA-IS3741; 5V; 1Mbps (500kHz), CL = 15 pF",
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        {
          "name": "IDDB 1Mbps",
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          "unit": "mA",
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          "typ": 4.1,
          "max": 6.2,
          "conditions": "CA-IS3741; 5V; 1Mbps (500kHz), CL = 15 pF",
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        {
          "name": "IDDA 10Mbps",
          "symbol": "IDDA",
          "kind": "electrical",
          "unit": "mA",
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          "typ": 6.9,
          "max": 9.9,
          "conditions": "CA-IS3741; 5V; 10Mbps (5MHz), CL = 15 pF",
          "source_page": 10,
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          "name": "IDDB 10Mbps",
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          "kind": "electrical",
          "unit": "mA",
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          "typ": 14,
          "max": 19.5,
          "conditions": "CA-IS3741; 5V; 10Mbps (5MHz), CL = 15 pF",
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          "name": "IDDA 100Mbps",
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          "kind": "electrical",
          "unit": "mA",
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          "typ": 14.3,
          "max": 19.8,
          "conditions": "CA-IS3741; 5V; 100Mbps (50MHz), CL = 15 pF",
          "source_page": 10,
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        {
          "name": "IDDB 100Mbps",
          "symbol": "IDDB",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 32.5,
          "max": 44,
          "conditions": "CA-IS3741; 5V; 100Mbps (50MHz), CL = 15 pF",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "Data rate",
          "symbol": "DR",
          "kind": "timing",
          "unit": "Mbps",
          "min": 150,
          "typ": null,
          "max": null,
          "conditions": "5V±10%",
          "source_page": 13,
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        {
          "name": "Minimum pulse width",
          "symbol": "PWmin",
          "kind": "timing",
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          "conditions": "5V±10%",
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        {
          "name": "Propagation delay",
          "symbol": "tPLH, tPHL",
          "kind": "timing",
          "unit": "ns",
          "min": 5,
          "typ": 12,
          "max": 16,
          "conditions": "Figure 8-1; 5V±10%",
          "source_page": 13,
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        {
          "name": "Pulse width distortion",
          "symbol": "PWD",
          "kind": "timing",
          "unit": "ns",
          "min": null,
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          "max": 4.5,
          "conditions": "|tPLH - tPHL|; 5V±10%",
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