MAX3485EIMM

{
  "schema_version": 1,
  "type": "component",
  "slug": "max3485eimm",
  "title": "MAX3485EIMM",
  "brief": "HGSEMI RS-485/RS-422 ICs, MSOP-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",
    "communication interface chip-uart-485-232",
    "max3485eimm",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "MAX3485EIMM",
    "manufacturer": "HGSEMI",
    "package": "MSOP-8",
    "pin_count": 8,
    "category": "Communication Interface Chip/UART/485/232",
    "subcategory": "RS-485/RS-422 ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/58e191425d18b57e366060381339661e.pdf",
    "parts": {
      "symbol": "max3485eimm.kicad_sym",
      "footprint": "max3485eimm.kicad_mod",
      "model_3d": "max3485eimm-hero.glb",
      "model_3d_plain": "max3485eimm-etched.glb",
      "model_3d_step": "max3485eimm-etched.step",
      "model_3d_step_plain": "max3485eimm.step",
      "lbr": "max3485eimm.lbr"
    },
    "distributor_links": {
      "lcsc": "C5310818"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T19:01:02Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RO",
        "type": "output",
        "description": "Receiver output: when RE is low, RO is high if A-B ≥ 200mV and low if A-B ≤ -200mV."
      },
      {
        "number": "2",
        "name": "RE",
        "type": "input",
        "description": "Receiver output enable: low enables RO, high puts RO in high impedance; RE high with DE low enters low-power shutdown."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver output enable: high enables driver outputs, low puts them in high impedance; RE high with DE low enters low-power shutdown."
      },
      {
        "number": "4",
        "name": "DI",
        "type": "input",
        "description": "Driver input: with DE high, a low on DI drives A low and B high, and a high on DI drives A high and B low."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "6",
        "name": "A",
        "type": "bidirectional",
        "description": "Non-inverting receiver input and non-inverting driver output."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "Inverting receiver input and inverting driver output."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply input, operating range 3.0 to 3.6 V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pinout figure on page 2 is an image, so no text shows it. Pin assignments come from the page 3 p"
        ],
        "pages_sent": 17,
        "cost_usd": 0.0843,
        "at": "2026-10-22T19:00:47"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/58e191425d18b57e366060381339661e.pdf",
        "pages": 17,
        "sha256": "2c206ef20fa97d7e",
        "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"
    },
    "models_3d": [
      {
        "file": "max3485eimm.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3,
          0.95
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "847c4c5023fe1603fbd36900a5dcc4bd3901ba473f71d42c9a469f0236eaadf3",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "max3485eimm-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3,
          0.95
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "8d1e8d3cc3367449d7822c07d62a41f99271469b13190c2959054282b697f47e",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "MSOP-8",
      "Category": "Communication Interface Chip/UART/485/232",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "2c206ef20fa97d7ef14c84b1ba97b97fce3d153f297876407253e1bdc14f1ce4",
      "rows": [
        {
          "name": "Differential driver output",
          "symbol": "VOD2",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": null,
          "max": null,
          "conditions": "RL = 54Ω",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Differential driver output",
          "symbol": "VOD2",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "RL = 100Ω",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Change in magnitude of VOD",
          "symbol": "ΔVOD",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "RL = 54Ω",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Driver common-mode output voltage",
          "symbol": "VOC",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "RL = 54Ω",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Change in magnitude of VOC",
          "symbol": "ΔVOC",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "RL = 54Ω",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input high voltage",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "DE, DI, RE",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input low voltage",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "DE, DI, RE",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Logic input current",
          "symbol": "IIN1",
          "kind": "electrical",
          "unit": "uA",
          "min": -2,
          "typ": null,
          "max": 2,
          "conditions": "DE, DI, RE",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output short-circuit current, short to high",
          "symbol": "IOSD1",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 250,
          "conditions": "short to 0V~12V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output short-circuit current, short to low",
          "symbol": "IOSD2",
          "kind": "electrical",
          "unit": "mA",
          "min": -250,
          "typ": null,
          "max": null,
          "conditions": "short to -7V~0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal shutdown threshold",
          "symbol": "",
          "kind": "thermal",
          "unit": "℃",
          "min": null,
          "typ": 140,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal shutdown hysteresis",
          "symbol": "",
          "kind": "thermal",
          "unit": "℃",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input current (A,B)",
          "symbol": "IIN2",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "DE = 0 V, VCC=0 or 3.3V, VIN = 12 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input current (A,B)",
          "symbol": "IIN2",
          "kind": "electrical",
          "unit": "mA",
          "min": -0.8,
          "typ": null,
          "max": null,
          "conditions": "DE = 0 V, VCC=0 or 3.3V, VIN = -7 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Positive input threshold voltage",
          "symbol": "VIT+",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "-7V≦VCM≦12V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Negative input threshold voltage",
          "symbol": "VIT-",
          "kind": "electrical",
          "unit": "mV",
          "min": -200,
          "typ": null,
          "max": null,
          "conditions": "-7V≦VCM≦12V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input hysteresis voltage",
          "symbol": "Vhys",
          "kind": "electrical",
          "unit": "mV",
          "min": 10,
          "typ": 30,
          "max": null,
          "conditions": "-7V≦VCM≦12V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Low-level output voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "IOUT = +2.5mA, VID = -200 mV",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Three-state input leakage current",
          "symbol": "IOZR",
          "kind": "electrical",
          "unit": "uA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "0.4 V < VO < 2.4 V",
          "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",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Receiver short-circuit current",
          "symbol": "IOSR",
          "kind": "electrical",
          "unit": "mA",
          "min": 8,
          "typ": null,
          "max": 60,
          "conditions": "0 V≤VO≤VCC",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply current",
          "symbol": "ICC1",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 520,
          "max": 800,
          "conditions": "RE = 0V, DE = 0 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply current",
          "symbol": "ICC2",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 540,
          "max": 700,
          "conditions": "RE = VCC, DE = VCC",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Shutdown current",
          "symbol": "ISHDN",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 0.5,
          "max": 30,
          "conditions": "RE = VCC, DE = 0V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Driver differential output delay",
          "symbol": "tDD",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 10,
          "max": 35,
          "conditions": "RDIFF = 60 Ω, CL1=CL2=100pF",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Driver differential transition time",
          "symbol": "tTD",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 12,
          "max": 25,
          "conditions": "RDIFF = 60 Ω, CL1=CL2=100pF",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Driver propagation delay low to high",
          "symbol": "tPLH",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 8,
          "max": 35,
          "conditions": "RDIFF = 27 Ω",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Driver propagation delay high to low",
          "symbol": "tPHL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 8,
          "max": 35,
          "conditions": "RDIFF = 27 Ω",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Driver propagation skew |tPLH-tPHL|",
          "symbol": "tPDS",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 1,
          "max": 8,
          "conditions": "RDIFF = 27 Ω",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Driver enable to output high",
          "symbol": "tPZH",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 20,
          "max": 90,
          "conditions": "RL = 110Ω",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Driver enable to output low",
          "symbol": "tPZL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 20,
          "max": 90,
          "conditions": "RL = 110Ω",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Driver input low to disable",
          "symbol": "tPLZ",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 20,
          "max": 80,
          "conditions": "RL = 110Ω",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Driver input high to disable",
          "symbol": "tPHZ",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 20,
          "max": 80,
          "conditions": "RL = 110Ω",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Driver enable from shutdown to output high",
          "symbol": "tDSH",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 500,
          "max": 900,
          "conditions": "RL = 110Ω",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Driver enable from shutdown to output low",
          "symbol": "tDSL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 500,
          "max": 900,
          "conditions": "RL = 110Ω",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Receiver propagation delay low to high",
          "symbol": "tRPLH",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 80,
          "max": 150,
          "conditions": "CL=15pF",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Receiver propagation delay high to low",
          "symbol": "tRPHL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 80,
          "max": 150,
          "conditions": "CL=15pF",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Receiver propagation skew |tRPLH − tRPHL|",
          "symbol": "tRPDS",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 7,
          "max": 10,
          "conditions": "CL=15pF",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Receiver enable to output low",
          "symbol": "tRPZL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 20,
          "max": 50,
          "conditions": "CL=15pF",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Receiver enable to output high",
          "symbol": "tRPZH",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 20,
          "max": 50,
          "conditions": "CL=15pF",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Receiver output low to disable",
          "symbol": "tPRLZ",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 20,
          "max": 45,
          "conditions": "CL=15pF",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Receiver output high to disable",
          "symbol": "tPRHZ",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 20,
          "max": 45,
          "conditions": "CL=15pF",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Receiver enable from shutdown to output high",
          "symbol": "tRPSH",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 200,
          "max": 1400,
          "conditions": "CL=15pF",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Receiver enable from shutdown to output low",
          "symbol": "tRPSL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 200,
          "max": 1400,
          "conditions": "CL=15pF",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Time to enter shutdown",
          "symbol": "tSHDN",
          "kind": "timing",
          "unit": "ns",
          "min": 80,
          "typ": null,
          "max": 300,
          "conditions": "NOTE2",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3,
          "typ": null,
          "max": 3.6,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Control port voltage",
          "symbol": "RE, DE, DI",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Bus input voltage",
          "symbol": "A, B",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -7,
          "typ": null,
          "max": 13,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Receiver output voltage",
          "symbol": "RO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature range MAX3485EI",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -60,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Lead soldering temperature",
          "symbol": "TLEAD",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "10S",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "max3485eimm"
  ],
  "discovery_pitch": "MAX3485EIMM (HGSEMI) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "max3485eimm.kicad_sym",
    "max3485eimm.kicad_mod",
    "max3485eimm.glb",
    "max3485eimm.step",
    "max3485eimm.lbr",
    "docs/hero.png",
    "docs/max3485eimm-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "max3485eimm-hero.glb",
    "max3485eimm-hero.overlay.json",
    "max3485eimm-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}