HT3485ARZ

{
  "schema_version": 1,
  "type": "component",
  "slug": "ht3485arz",
  "title": "HT3485ARZ",
  "brief": "HTCSEMI 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",
    "ht3485arz"
  ],
  "component": {
    "mpn": "HT3485ARZ",
    "manufacturer": "HTCSEMI",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2106071133_HTCSEMI-HT3485ARZ_C2834455.pdf",
    "parts": {
      "symbol": "ht3485arz.kicad_sym",
      "footprint": "ht3485arz.kicad_mod",
      "model_3d": "ht3485arz-etched.glb",
      "model_3d_plain": "ht3485arz.glb",
      "model_3d_step": "ht3485arz-etched.step",
      "model_3d_step_plain": "ht3485arz.step",
      "lbr": "ht3485arz.lbr"
    },
    "distributor_links": {
      "lcsc": "C2834455"
    },
    "pins": [
      {
        "number": "1",
        "name": "RO",
        "type": "output",
        "description": "Receiver output. CMOS logic-level output driven from the differential receiver comparing A vs B (threshold ±0.2 V). High-Z (OFF state) when RE is deasserted (high)."
      },
      {
        "number": "2",
        "name": "RE",
        "type": "input",
        "description": "Receiver output enable pin (active-low, /RE). Drive low to enable the receiver output RO; drive high to place RO in the high-impedance state. With RE high and DE low the part enters shutdown mode."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver (transmitter) output enable pin (active-high). Drive high to enable the differential driver outputs A/B; drive low to tri-state (OFF state) the driver outputs."
      },
      {
        "number": "4",
        "name": "DI",
        "type": "input",
        "description": "Transmitter (driver) input. CMOS logic-level input that sets the differential state of the A/B bus lines when DE is high. VIL ≤ 0.8 V, VIH ≥ 2.0 V."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground / common reference pin (0 V). Return for supply current and reference for all logic-level inputs and outputs."
      },
      {
        "number": "6",
        "name": "A",
        "type": "bidirectional",
        "description": "Non-inverting (uncomplemented) RS-485/RS-422 differential I/O line. Serves as driver output when DE=H and as receiver input when RE=L. Withstands -7 V to +12 V bus voltage."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "Inverting (complemented, /B) RS-485/RS-422 differential I/O line. Serves as driver output when DE=H and as receiver input when RE=L. Withstands -7 V to +12 V bus voltage."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply pin. Recommended operating range 3.0-3.6 V (absolute max 7.0 V). Decouple to GND with a local bypass capacitor."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2106071133_HTCSEMI-HT3485ARZ_C2834455.pdf",
        "pages": 11,
        "sha256": "7ee4385f61d7225d",
        "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"
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HTCSEMI",
      "Package": "SOP-8",
      "Category": "Interface",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ht3485arz"
  ],
  "discovery_pitch": "HT3485ARZ (HTCSEMI) 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",
    "ht3485arz.kicad_sym",
    "ht3485arz.kicad_mod",
    "ht3485arz.glb",
    "ht3485arz.step",
    "ht3485arz-etched.step",
    "ht3485arz.lbr",
    "docs/hero.png",
    "docs/ht3485arz-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "HT3485ARZ",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-24T22:02:23.431Z"
}