ISL8490IBZ-T

{
  "schema_version": 1,
  "type": "component",
  "slug": "isl8490ibz-t",
  "title": "ISL8490IBZ-T",
  "brief": "RENESAS RS-485 / RS-422 ICs, SOIC-8. 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",
    "isl8490ibz-t",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "ISL8490IBZ-T",
    "manufacturer": "RENESAS",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588922258307878912",
    "parts": {
      "symbol": "isl8490ibz-t.kicad_sym",
      "footprint": "isl8490ibz-t.kicad_mod",
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      "model_3d_plain": "isl8490ibz-t-etched.glb",
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      "model_3d_step_plain": "isl8490ibz-t.step",
      "lbr": "isl8490ibz-t.lbr"
    },
    "distributor_links": {
      "lcsc": "C2672026",
      "digikey": "ISL8490IBZ-TTR-ND",
      "mouser": "968-ISL8490IBZ-T"
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    "distributor_check": {
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      "source": "Component Ocean /api/assign-pns",
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        "lifecycle": "Active"
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    },
    "pins": [
      {
        "number": "1",
        "name": "VCC",
        "type": "power_in",
        "description": "System power supply input, 4.5V to 5.5V."
      },
      {
        "number": "2",
        "name": "RO",
        "type": "output",
        "description": "Receiver output: high if A > B by at least 0.2V, low if A < B by 0.2V or more, and high if A and B are unconnected (floating)."
      },
      {
        "number": "3",
        "name": "DI",
        "type": "input",
        "description": "Driver input: a low forces Y low and Z high, a high forces Y high and Z low."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection."
      },
      {
        "number": "5",
        "name": "Y",
        "type": "output",
        "description": "Noninverting driver output."
      },
      {
        "number": "6",
        "name": "Z",
        "type": "output",
        "description": "Inverting driver output."
      },
      {
        "number": "7",
        "name": "B",
        "type": "input",
        "description": "Inverting receiver input."
      },
      {
        "number": "8",
        "name": "A",
        "type": "input",
        "description": "Noninverting receiver input."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
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        "primary_model": "claude-sonnet-5-5",
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        "guards": "pin_guards 0.1: passed",
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        "cost_usd": 0.3064,
        "at": "2026-10-18T01:05:44"
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        "pages": 16,
        "sha256": "cc533ecfe9a94476",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "RENESAS",
      "Package": "SOIC-8",
      "Category": "Interface",
      "Pins": "8"
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          "unit": "V",
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          "typ": null,
          "max": 5.5,
          "conditions": "System power supply input, 10% tolerance",
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        {
          "name": "Operating temperature range (ISL84XXIX, industrial)",
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          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "ISL84XXIX; applies to ISL8490IB",
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          "name": "ESD HBM rating",
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          "unit": "kV",
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          "conditions": "HBM per MIL-STD-883 Method 3015.7; printed as >7kV",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Maximum junction temperature (plastic package)",
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          "unit": "°C",
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          "typ": null,
          "max": 150,
          "conditions": "",
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        {
          "name": "Maximum storage temperature range",
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          "unit": "°C",
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          "typ": null,
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          "conditions": "",
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        {
          "name": "Maximum lead temperature (soldering)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "Soldering 10s, SOIC lead tips only",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Driver differential VOUT (with load)",
          "symbol": "VOD2",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": 3,
          "max": null,
          "conditions": "R = 50Ω (RS-422), Figure 1; Full temp",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Driver differential VOUT (with load)",
          "symbol": "VOD2",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": 2.3,
          "max": 5,
          "conditions": "R = 27Ω (RS-485), Figure 1; Full temp",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Driver common-mode VOUT",
          "symbol": "VOC",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "R = 27Ω or 50Ω, Figure 1; Full temp",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Logic input high voltage",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "DE, DI, RE; Full temp",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "Logic input low voltage",
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          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "DE, DI, RE; Full temp",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Logic input current DI",
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          "kind": "electrical",
          "unit": "µA",
          "min": -2,
          "typ": null,
          "max": 2,
          "conditions": "DI (ISL8485 - ISL8491); Full temp",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input current (A, B) at VIN = 12V",
          "symbol": "IIN2",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "DE = 0V, VCC = 0V or 4.5 to 5.5V, VIN = 12V; Note 10; Full temp",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input current (A, B) at VIN = -7V",
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          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": -0.8,
          "conditions": "DE = 0V, VCC = 0V or 4.5 to 5.5V, VIN = -7V; Note 10; Full temp",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Receiver differential threshold voltage",
          "symbol": "VTH",
          "kind": "electrical",
          "unit": "V",
          "min": -0.2,
          "typ": null,
          "max": 0.2,
          "conditions": "-7V ≤ VCM ≤ 12V; Full temp",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Receiver output high voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 3.5,
          "typ": null,
          "max": null,
          "conditions": "IO = -4mA, VID = 200mV; Full temp",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Receiver output low voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "IO = -4mA, VID = 200mV; Full temp",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Three-state receiver output current",
          "symbol": "IOZR",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "0.4V ≤ VO ≤ 2.4V; Full temp",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Receiver input resistance",
          "symbol": "RIN",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 12,
          "typ": null,
          "max": null,
          "conditions": "-7V ≤ VCM ≤ 12V; Full temp",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "No-load supply current (ISL8490)",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 500,
          "max": 565,
          "conditions": "ISL8490, DE, DI, RE = 0V or VCC; Full temp",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Driver short-circuit current, VO = High or Low",
          "symbol": "IOSD1",
          "kind": "electrical",
          "unit": "mA",
          "min": 35,
          "typ": null,
          "max": 250,
          "conditions": "DE = VCC, -7V ≤ VY or VZ ≤ 12V; Note 4 (peak current); Full temp",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Receiver short-circuit current",
          "symbol": "IOSR",
          "kind": "electrical",
          "unit": "mA",
          "min": 7,
          "typ": null,
          "max": 85,
          "conditions": "0V ≤ VO ≤ VCC; Full temp",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Driver input to output delay",
          "symbol": "tPLH, tPHL",
          "kind": "electrical",
          "unit": "ns",
          "min": 18,
          "typ": 30,
          "max": 50,
          "conditions": "RDIFF = 54Ω, CL = 100pF, Figure 2; Full temp",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Driver differential rise or fall time",
          "symbol": "tR, tF",
          "kind": "electrical",
          "unit": "ns",
          "min": 3,
          "typ": 11,
          "max": 25,
          "conditions": "RDIFF = 54Ω, CL = 100pF, Figure 2; Full temp",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Driver output skew",
          "symbol": "tSKEW",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 2,
          "max": 10,
          "conditions": "RDIFF = 54Ω, CL = 100pF, Figure 2; Full temp",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "Receiver input to output delay",
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          "kind": "electrical",
          "unit": "ns",
          "min": 30,
          "typ": 40,
          "max": 150,
          "conditions": "Figure 4; Full temp",
          "source_page": 6,
          "source": "datasheet"
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          "name": "Maximum data rate",
          "symbol": "fMAX",
          "kind": "electrical",
          "unit": "Mbps",
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          "typ": null,
          "max": null,
          "conditions": "Note 11 (guaranteed by characterization, not tested); Full temp",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Receiver hysteresis",
          "symbol": "ΔVTH",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 70,
          "max": null,
          "conditions": "VCM = 0V; 25°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Receiver skew |tPLH - tPHL|",
          "symbol": "tSKD",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "Figure 4; 25°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction-to-ambient, 8 Ld SOIC",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 170,
          "max": null,
          "conditions": "Typical, Note 1; component mounted on low effective thermal conductivity test board in free air",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
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  "discovery_pitch": "ISL8490IBZ-T (RENESAS) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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