ISL3172EIBZ-T

{
  "schema_version": 1,
  "type": "component",
  "slug": "isl3172eibz-t",
  "title": "ISL3172EIBZ-T",
  "brief": "RENESAS RS-485 / RS-422 ICs, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "isl3172eibz-t"
  ],
  "component": {
    "mpn": "ISL3172EIBZ-T",
    "manufacturer": "RENESAS",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/c9cb52296dce4211918bb236ed7763b7.pdf",
    "parts": {
      "symbol": "isl3172eibz-t.kicad_sym",
      "footprint": "isl3172eibz-t.kicad_mod",
      "model_3d": "isl3172eibz-t-etched.glb",
      "model_3d_plain": "isl3172eibz-t.glb",
      "model_3d_step": "isl3172eibz-t-etched.step",
      "model_3d_step_plain": "isl3172eibz-t.step",
      "lbr": "isl3172eibz-t.lbr"
    },
    "distributor_links": {
      "lcsc": "C43154"
    },
    "pins": [
      {
        "number": "1",
        "name": "RO",
        "type": "output",
        "description": "Receiver output. RO is high when A-B ≥ -50mV and low when A-B ≤ -200mV. RO is high (full fail-safe) when the A and B inputs are open, shorted, or terminated and undriven. High-Z when /RE is high."
      },
      {
        "number": "2",
        "name": "/RE",
        "type": "input",
        "description": "Active-low receiver output enable. RO is enabled when /RE is low; RO is high-impedance when /RE is high. If not required, tie to GND directly or through a 1kΩ to 3kΩ resistor. VIH ≥ 2V, VIL ≤ 0.8V."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver output enable. Driver outputs Y and Z are enabled when DE is high and are high-impedance when DE is low. If not required, tie to VCC through a 1kΩ to 3kΩ resistor. Driving both DE=0 and /RE=1 puts the part into shutdown mode."
      },
      {
        "number": "4",
        "name": "DI",
        "type": "input",
        "description": "Driver input. A low on DI forces Y low and Z high; a high on DI forces Y high and Z low. Logic input thresholds VIH ≥ 2V, VIL ≤ 0.8V."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the transceiver."
      },
      {
        "number": "6",
        "name": "A/Y",
        "type": "bidirectional",
        "description": "±15kV IEC61000 ESD protected RS-485/RS-422 non-inverting bus pin. Acts as the receiver non-inverting input when DE = 0; acts as the driver non-inverting output (Y) when DE = 1. Common-mode range -7V to +12V."
      },
      {
        "number": "7",
        "name": "B/Z",
        "type": "bidirectional",
        "description": "±15kV IEC61000 ESD protected RS-485/RS-422 inverting bus pin. Acts as the receiver inverting input when DE = 0; acts as the driver inverting output (Z) when DE = 1. Common-mode range -7V to +12V."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "System power supply input, 3.0V to 3.6V. Bypass with a 0.1µF ceramic capacitor to GND close to the pin. Quiescent supply current 510µA typical (800µA max); shutdown current 10nA typical."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/c9cb52296dce4211918bb236ed7763b7.pdf",
        "pages": 19,
        "sha256": "46582fa2933098c4",
        "source_tier": "mfr"
      },
      "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "isl3172eibz-t.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "isl3172eibz-t-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "9f405da93eaf01ebfa5781ba190353ddb8226e1ea56e4c2976c41c380005c8ed",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "RENESAS",
      "Package": "SOIC-8",
      "Category": "Interface",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "isl3172eibz-t"
  ],
  "discovery_pitch": "ISL3172EIBZ-T (RENESAS) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "isl3172eibz-t.kicad_sym",
    "isl3172eibz-t.kicad_mod",
    "isl3172eibz-t.glb",
    "isl3172eibz-t.step",
    "isl3172eibz-t-etched.step",
    "isl3172eibz-t.lbr",
    "docs/hero.png",
    "docs/isl3172eibz-t-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "ISL3172EIBZ-T",
      "kind": "packaging"
    },
    {
      "mpn": "ISL3172EIUZ",
      "kind": "unknown"
    }
  ],
  "updated_at": "2026-09-24T22:59:05.353Z"
}