ADM485ARZ

{
  "schema_version": 1,
  "type": "component",
  "slug": "adm485arz",
  "title": "ADM485ARZ",
  "brief": "UMW RS-485 / RS-422 ICs, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "adm485arz"
  ],
  "component": {
    "mpn": "ADM485ARZ",
    "manufacturer": "UMW",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/88020c4c2281f4f1a02bce887cc80d45.pdf",
    "parts": {
      "symbol": "adm485arz.kicad_sym",
      "footprint": "adm485arz.kicad_mod",
      "model_3d": "adm485arz-etched.glb",
      "model_3d_plain": "adm485arz.glb",
      "model_3d_step": "adm485arz-etched.step",
      "model_3d_step_plain": "adm485arz.step",
      "lbr": "adm485arz.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "RO",
        "type": "output",
        "description": "Receiver Output. CMOS logic output driven from the A/B differential inputs. Outputs logic HIGH when (A-B) >= +0.2V, LOW when (A-B) <= -0.2V, and HIGH when the differential inputs are open (fail-safe). Goes to high-impedance when RE is HIGH. VOH >= 3.5V @ -4mA, VOL <= 0.4V @ 4mA."
      },
      {
        "number": "2",
        "name": "RE",
        "type": "input",
        "description": "Receiver Output Enable, active LOW. When LOW the receiver output RO is enabled; when HIGH RO is placed in high-impedance (three-state). CMOS-compatible input, VIH >= 2V, VIL <= 0.8V, IIN <= +/-2 uA."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver Output Enable, active HIGH. When HIGH the differential driver outputs A and B are enabled; when LOW they are placed in high-impedance (three-state). CMOS-compatible input, VIH >= 2V, VIL <= 0.8V, IIN <= +/-2 uA."
      },
      {
        "number": "4",
        "name": "DI",
        "type": "input",
        "description": "Driver Input. CMOS logic input; a HIGH on DI drives A HIGH and B LOW, a LOW on DI drives A LOW and B HIGH (when DE is HIGH). VIH >= 2V, VIL <= 0.8V, IIN <= +/-2 uA."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (0V) for all signals and the supply."
      },
      {
        "number": "6",
        "name": "A",
        "type": "bidirectional",
        "description": "Non-inverting differential bus I/O. Driver non-inverting output when DE is HIGH; receiver non-inverting input when DE is LOW. Common-mode range -7V to +12V, input resistance >= 12 kOhm, driver differential output >= 1.5V into 27 Ohm (RS-485)."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "Inverting differential bus I/O. Driver inverting output when DE is HIGH; receiver inverting input when DE is LOW. Common-mode range -7V to +12V, input resistance >= 12 kOhm."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply input, +5V nominal (4.75V to 5.25V). Supply current typ. 1 mA (outputs enabled), 0.6 mA (outputs disabled), 2.2 mA max."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/88020c4c2281f4f1a02bce887cc80d45.pdf",
        "pages": 9,
        "sha256": "9d70c6bbd515fd15",
        "source_tier": "lcsc"
      },
      "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": "adm485arz.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "adm485arz-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "8c0dcf5ce06c38943f5a7facb9452850a0c922436d2ec24054c588de09d45541",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "UMW",
      "Package": "SOP-8",
      "Category": "Interface",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "adm485arz"
  ],
  "discovery_pitch": "ADM485ARZ (UMW) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "adm485arz.kicad_sym",
    "adm485arz.kicad_mod",
    "adm485arz.glb",
    "adm485arz.step",
    "adm485arz-etched.step",
    "adm485arz.lbr",
    "docs/hero.png",
    "docs/adm485arz-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T15:54:47.387Z"
}