MAX3485ECMM

{
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  "type": "component",
  "slug": "max3485ecmm",
  "title": "MAX3485ECMM",
  "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": [
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    "interface",
    "max3485ecmm",
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  "component": {
    "mpn": "MAX3485ECMM",
    "manufacturer": "HGSEMI",
    "package": "MSOP-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8770707237629648896",
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      "model_3d_step": "max3485ecmm-etched.step",
      "model_3d_step_plain": "max3485ecmm.step",
      "lbr": "max3485ecmm.lbr"
    },
    "distributor_links": {
      "lcsc": "C5310819"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T15:16:46Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
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      "mouser": {
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    },
    "pins": [
      {
        "number": "1",
        "name": "RO",
        "type": "output",
        "description": "Receiver output: with RE low, RO is high when A-B ≥ 200 mV and low when A-B ≤ -200 mV, and is high-Z when RE is high."
      },
      {
        "number": "2",
        "name": "RE",
        "type": "input",
        "description": "Receiver output enable, active low: RO is enabled when RE is low and goes high-Z when RE is high, and RE high with DE low puts the device into low-power shutdown."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver output enable, active high: the driver outputs are enabled when DE is high and high-Z when DE is low, and DE low with RE high puts the device into 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 pin; all voltages are referenced to this pin."
      },
      {
        "number": "6",
        "name": "A",
        "type": "bidirectional",
        "description": "Receiver non-inverting input and driver non-inverting output; bus-side input range is -7 V to +13 V."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "Receiver inverting input and driver inverting output; bus-side input range is -7 V to +13 V."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply pin: operating range is 3.0 to 3.6 V (3.3 V ±10%), with an absolute maximum of +7 V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
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        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The MPN given is MAX3485ECMM, but the ordering table (page 1) lists the MSOP-8 part as MAX3485ECMM/T; Pin numbers and functions are from the single pin-definition table on page 3, which applies to DIP-8; The datasheet is in Chinese; pin descriptions were translated and condensed into single sentences. P"
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        "at": "2026-10-18T15:14:31"
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        "sha256": "2c206ef20fa97d7e",
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
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  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "MSOP-8",
      "Category": "Interface",
      "Pins": "8"
    },
    "characteristics": {
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          "unit": "V",
          "min": null,
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          "max": 7,
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        {
          "name": "Control port voltage (RE, DE, DI)",
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          "min": -0.3,
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        {
          "name": "Bus-side input voltage (A, B)",
          "symbol": "A, B",
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          "unit": "V",
          "min": -7,
          "typ": null,
          "max": 13,
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        {
          "name": "Receiver output voltage (RO)",
          "symbol": "RO",
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          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7,
          "conditions": "",
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        },
        {
          "name": "Operating temperature range",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": 0,
          "typ": null,
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        {
          "name": "Storage temperature range",
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        {
          "name": "Soldering temperature, 10 s",
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        {
          "name": "Supply voltage operating range",
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          "typ": null,
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        {
          "name": "Differential output voltage, RL=54 ohm",
          "symbol": "VOD2",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": null,
          "max": null,
          "conditions": "Fig 2, RL = 54 Ω; max printed as VCC",
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        {
          "name": "Differential output voltage, RL=100 ohm",
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          "typ": null,
          "max": null,
          "conditions": "Fig 2, RL = 100 Ω; max printed as VCC",
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        },
        {
          "name": "Change in differential output voltage magnitude",
          "symbol": "ΔVOD",
          "kind": "electrical",
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          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "Fig 2, RL = 54 Ω",
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        {
          "name": "Common-mode output voltage",
          "symbol": "VOC",
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          "max": 3,
          "conditions": "Fig 2, RL = 54 Ω",
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          "name": "Change in common-mode output voltage magnitude",
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        {
          "name": "High-level input voltage",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "DE, DI, RE",
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        {
          "name": "Low-level input voltage",
          "symbol": "VIL",
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          "unit": "V",
          "min": null,
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          "max": 0.8,
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        {
          "name": "Logic input current",
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        {
          "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,
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        {
          "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",
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        {
          "name": "Input current (A, B) at VIN=12 V",
          "symbol": "IIN2",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "DE = 0 V, VCC=0 or 3.3V, VIN = 12 V",
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        {
          "name": "Input current (A, B) at VIN=-7 V",
          "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,
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        {
          "name": "Positive input threshold voltage",
          "symbol": "VIT+",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "-7V≦VCM≦12V",
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        {
          "name": "Negative input threshold voltage",
          "symbol": "VIT-",
          "kind": "electrical",
          "unit": "mV",
          "min": -200,
          "typ": null,
          "max": null,
          "conditions": "-7V≦VCM≦12V",
          "source_page": 5,
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        },
        {
          "name": "Input hysteresis voltage",
          "symbol": "Vhys",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 10,
          "max": 30,
          "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,
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        },
        {
          "name": "Receiver short-circuit current",
          "symbol": "IOSR",
          "kind": "electrical",
          "unit": "mA",
          "min": -8,
          "typ": null,
          "max": 60,
          "conditions": "0 V≤VO≤VCC; printed ±8 (min) and ±60 (max)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply current, driver and receiver enabled",
          "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, driver and receiver disabled",
          "symbol": "ICC2",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 540,
          "max": 700,
          "conditions": "RE =VCC, DE=VCC",
          "source_page": 5,
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        {
          "name": "Shutdown current",
          "symbol": "ISHDN",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 0.5,
          "max": 30,
          "conditions": "RE =VCC, DE=0V",
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        {
          "name": "Driver differential output delay",
          "symbol": "tDD",
          "kind": "timing",
          "unit": "ns",
          "min": null,
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          "max": 35,
          "conditions": "RDIFF = 60 Ω, CL1=CL2=100pF",
          "source_page": 6,
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        {
          "name": "Driver differential transition time",
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          "name": "Driver propagation delay, low to high",
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          "conditions": "RDIFF = 27 Ω, (见图 3 与图 4)",
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          "name": "Driver propagation delay, high to low",
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          "name": "Driver propagation delay skew |tPLH-tPHL|",
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          "name": "Driver enable to output high",
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          "name": "Driver input low to disable",
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          "name": "Driver input high to disable",
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          "name": "Driver enable to output high in shutdown",
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          "name": "Driver enable to output low in shutdown",
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          "name": "Receiver propagation delay, low to high",
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          "max": 150,
          "conditions": "CL=15pF, 见图 7 与图 8",
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          "name": "Receiver propagation delay, high to low",
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          "name": "Receiver propagation delay skew |tRPLH - tRPHL|",
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          "name": "Receiver enable to output low",
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          "name": "Receiver enable to output high",
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          "name": "Receiver output low to disable",
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          "conditions": "CL=15pF, 见图 7 与图 8",
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          "name": "Receiver output high to disable",
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          "name": "Receiver enable to output high in shutdown",
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          "name": "Receiver enable to output low in shutdown",
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          "name": "Time to enter shutdown",
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