WS3471EEUA

{
  "schema_version": 1,
  "type": "component",
  "slug": "ws3471eeua",
  "title": "WS3471EEUA",
  "brief": "GEC 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",
    "interface",
    "ws3471eeua",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "WS3471EEUA",
    "manufacturer": "GEC",
    "package": "MSOP-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8559358512217014272",
    "parts": {
      "symbol": "ws3471eeua.kicad_sym",
      "footprint": "ws3471eeua.kicad_mod",
      "model_3d": "ws3471eeua-hero.glb",
      "model_3d_plain": "ws3471eeua-etched.glb",
      "model_3d_step": "ws3471eeua-etched.step",
      "model_3d_step_plain": "ws3471eeua.step",
      "lbr": "ws3471eeua.lbr"
    },
    "distributor_links": {
      "lcsc": "C22381389"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T18:34:32Z",
      "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 the receiver is enabled, RO goes high if V(A)-V(B) > -50 mV and low if V(A)-V(B) < -450 mV."
      },
      {
        "number": "2",
        "name": "RE",
        "type": "input",
        "description": "Receiver output enable, active low: RO is valid when RE is low and the receiver is disabled when RE is high; with RE high and DE low the whole chip is in shutdown."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver output enable: driver is enabled when DE is high and disabled with outputs in high-impedance when DE is low; with RE high and DE low the whole chip is in shutdown."
      },
      {
        "number": "4",
        "name": "DI",
        "type": "input",
        "description": "Driver input: a low level forces the non-inverting output low and the inverting output high, and a high level forces the non-inverting output high and the inverting output low."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "6",
        "name": "A",
        "type": "bidirectional",
        "description": "RS-485/RS-422 bus interface: driver non-inverting output and receiver non-inverting input; rated for bus common-mode range of -7 V to +12 V."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "RS-485/RS-422 bus interface: driver inverting output and receiver inverting input; rated for bus common-mode range of -7 V to +12 V."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply, recommended 2.5 V to 5.5 V (Table 6), to be bypassed to GND with a 0.1 µF capacitor."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pin-function table (Table 3) gives pins 1-8 once for the device and does not print a separate MS; Page 9 confirms that WS3471EEUA is supplied in MSOP8 (5000 pcs, 13-inch reel), so the MSOP8 package ; The bus-pin common-mode range (-7 V to +12 V) on A and B is taken from the electrical characteristic"
        ],
        "pages_sent": 10,
        "cost_usd": 0.0399,
        "at": "2026-10-18T18:34:19"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8559358512217014272",
        "pages": 10,
        "sha256": "14fe0c13f69c5a80",
        "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": [
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        "file": "ws3471eeua.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": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ws3471eeua-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
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        "sha256": "34d93b7b24ad864ee8a6b9c459259c01d3167ae1a8b6a16d203b65e3622834e3",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "GEC",
      "Package": "MSOP-8",
      "Category": "Interface",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
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          "name": "差分输出幅值变化",
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          "name": "输入电流",
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        {
          "name": "接收器输出低电平",
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          "unit": "伏",
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          "conditions": "IO=4mA,VID=-1V",
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          "name": "接收器输出高阻态漏电流",
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          "name": "静态供电电流",
          "symbol": "ICC",
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          "name": "静态供电电流",
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          "name": "静态供电电流",
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        {
          "name": "静电保护(A管脚,B管脚) 接触放电模型",
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        {
          "name": "静电保护(A管脚,B管脚) 人体模型",
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          "name": "静电保护(其他管脚)",
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          "name": "驱动器输入输出延时 tDPLH",
          "symbol": "tDPLH",
          "kind": "timing",
          "unit": "微秒",
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          "max": 2,
          "conditions": "图 3 和 5, RDIFF=1.5K 欧姆, CL=54pF",
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          "name": "驱动器输入输出延时 tDPHL",
          "symbol": "tDPHL",
          "kind": "timing",
          "unit": "微秒",
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          "name": "驱动器输入输出延时之差",
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        {
          "name": "驱动器上升、下降时间",
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          "kind": "timing",
          "unit": "微秒",
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          "typ": 1.2,
          "max": 1.75,
          "conditions": "图 3 和 5, RDIFF=1.5K 欧姆，CL1=CL2=100pF",
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        {
          "name": "最大速率",
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          "unit": "kbps",
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          "name": "驱动器使能到输出为高电平",
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          "kind": "timing",
          "unit": "微秒",
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          "name": "驱动器使能到输出为低电平",
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          "name": "接收器输入输出延时",
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          "kind": "timing",
          "unit": "微秒",
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          "typ": 4,
          "max": 12,
          "conditions": "图7和9；|VID|≥2.0V；VID上升下降时间小于15纳秒",
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        {
          "name": "接收器输入输出延时之差",
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        {
          "name": "接收器使能到输出高",
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          "typ": null,
          "max": 500,
          "conditions": "图 2 和 8, CL=100pF,S2 关断",
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          "name": "接收器从输出高到关断",
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          "conditions": "图 2 和 8, CL=100pF,S1 关断",
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          "name": "接收器从输出低到关断",
          "symbol": "tRHZ",
          "kind": "timing",
          "unit": "纳秒",
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          "typ": null,
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          "conditions": "图 2 和 8, CL=100pF,S2 关断",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "接收器输入阻抗",
          "symbol": "RIN",
          "kind": "electrical",
          "unit": "千欧姆",
          "min": null,
          "typ": 96,
          "max": null,
          "conditions": "-7V≤VCM≤+12V",
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          "source": "datasheet"
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        {
          "name": "接收器差分输入阈值电压迟滞",
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          "kind": "electrical",
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          "typ": 40,
          "max": null,
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        {
          "name": "输入迟滞",
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          "kind": "electrical",
          "unit": "毫伏",
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          "typ": 100,
          "max": null,
          "conditions": "DE, DI, RE",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "最大工作电压",
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          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 7,
          "conditions": "",
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        {
          "name": "逻辑脚电压",
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          "conditions": "",
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          "source": "datasheet"
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        {
          "name": "总线脚电压",
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          "unit": "V",
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          "max": 13,
          "conditions": "",
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          "source": "datasheet"
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        {
          "name": "存储温度",
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          "kind": "absolute_maximum",
          "unit": "℃",
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          "typ": null,
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          "conditions": "",
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        {
          "name": "最高结温",
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          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
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