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Ray Set visibility: public a0677b5 17d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "hg487ein",
  "title": "HG487EIN",
  "brief": "HGSEMI RS-485 / RS-422 ICs, DIP-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",
    "hg487ein",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "HG487EIN",
    "manufacturer": "HGSEMI",
    "package": "DIP-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603086099308818432",
    "parts": {
      "symbol": "hg487ein.kicad_sym",
      "footprint": "hg487ein.kicad_mod",
      "model_3d": "hg487ein-hero.glb",
      "model_3d_plain": "hg487ein-etched.glb",
      "model_3d_step": "hg487ein-etched.step",
      "model_3d_step_plain": "hg487ein.step",
      "lbr": "hg487ein.lbr"
    },
    "distributor_links": {
      "lcsc": "C2926355"
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    "distributor_check": {
      "checked_at": "2026-10-16T04:32:13Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RO",
        "type": "output",
        "description": "Receiver output: with RE low, RO goes high when A - B is at least +200 mV and goes low when A - B is at most -200 mV."
      },
      {
        "number": "2",
        "name": "RE",
        "type": "input",
        "description": "Receiver output enable: RO is active when RE is low and high-impedance when RE is high; RE high with DE low puts the device into low-power shutdown, and RE has a hot-plug input structure."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver output enable: the driver outputs are active when DE is high and high-impedance when DE is low; DE high with RE low... see shutdown note, and DE has a hot-plug input structure."
      },
      {
        "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 bus terminal A, acting as the receiver non-inverting input and driver non-inverting output as used in the A - B receiver function and the driver outputs."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "Inverting bus terminal B, acting as the receiver inverting input and driver inverting output."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply, 4.5 V to 5.5 V; bypass with a 0.1 µF capacitor to ground."
      }
    ],
    "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 table on page 16 is flattened text with several column groups (14-pin full duplex, 8-pin ful; The datasheet's pin 6 label reads 'receiver non-inverting output and driver non-inverting output', w; The DE pin description was cut off in the source text. The sentence avoids the shutdown condition, w"
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        "pages_sent": 24,
        "cost_usd": 0.0816,
        "at": "2026-10-16T04:31:58"
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      "datasheet": {
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        "pages": 24,
        "sha256": "875b683720653634",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
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      "footprint": "viewers/footprint.html"
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
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        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "4a377a56a8d9e9c0b86c095ef9ecc1869ac19e7f5069a3247b294250bf4f235d",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "hg487ein-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
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        "sha256": "b251b9d3404a12f66260fa39eb230d147c4c9f54cd59261d6591ccdebbdc5c39",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "DIP-8",
      "Category": "Interface",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "875b683720653634301bd4ef664f0006b85551c18d2b38fdc6758c0a82b48d0e",
      "rows": [
        {
          "name": "Supply voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.5,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature range (industrial grade)",
          "symbol": "",
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          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "HG48_I",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage (absolute maximum)",
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          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Control input voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "RE, DE",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Driver input voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
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          "conditions": "DI",
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          "name": "Driver output voltage",
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          "name": "Receiver input voltage",
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          "source": "datasheet"
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        {
          "name": "Receiver output voltage",
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          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
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          "max": null,
          "conditions": "RO; printed upper limit is (VCC+0.3)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Continuous power dissipation, 8-pin plastic DIP",
          "symbol": "",
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          "unit": "mW",
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          "max": 725,
          "conditions": "TA=+70°C",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Storage temperature",
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          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Differential driver output voltage",
          "symbol": "VOD",
          "kind": "electrical",
          "unit": "V",
          "min": 2.7,
          "typ": null,
          "max": null,
          "conditions": "Fig.1, RL=100Ω (RS-422)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Differential driver output voltage",
          "symbol": "VOD",
          "kind": "electrical",
          "unit": "V",
          "min": 2.1,
          "typ": null,
          "max": null,
          "conditions": "Fig.1, RL=54Ω (RS-485)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Change in magnitude of differential output voltage",
          "symbol": "ΔVOD",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "Fig.1, RL=100Ω or RL=54Ω",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Driver common-mode output voltage",
          "symbol": "VOC",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "Fig.1, RL=100Ω or RL=54Ω",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input high voltage",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "DE, DI, RE",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input low voltage",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "DE, DI",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input current",
          "symbol": "IIN",
          "kind": "electrical",
          "unit": "μA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "DE, DI, RE",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input current (A, B), full duplex",
          "symbol": "IA, IB",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 125,
          "conditions": "DE=GND, VCC=GND or VCC, VIN=12V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input current (A, B), full duplex",
          "symbol": "IA, IB",
          "kind": "electrical",
          "unit": "μA",
          "min": -75,
          "typ": null,
          "max": null,
          "conditions": "DE=GND, VCC=GND or VCC, VIN=-7V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output leakage current (Y, Z), full duplex",
          "symbol": "IO",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 125,
          "conditions": "DE=GND, VCC=GND or VCC, VIN=12V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output leakage current (Y, Z), full duplex",
          "symbol": "IO",
          "kind": "electrical",
          "unit": "μA",
          "min": -100,
          "typ": null,
          "max": null,
          "conditions": "DE=GND, VCC=GND or VCC, VIN=-7V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Driver short-circuit output current",
          "symbol": "IOSD",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 250,
          "conditions": "0≤VOUT≤12V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Driver short-circuit output current",
          "symbol": "IOSD",
          "kind": "electrical",
          "unit": "mA",
          "min": -250,
          "typ": null,
          "max": null,
          "conditions": "-7≤VOUT≤VCC",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Driver short-circuit foldback output current",
          "symbol": "IOSDF",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "VCC-1V≤VOUT≤VCC+0.5V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Driver short-circuit foldback output current",
          "symbol": "IOSDF",
          "kind": "electrical",
          "unit": "mA",
          "min": -20,
          "typ": null,
          "max": null,
          "conditions": "-0.5V≤VOUT≤+1V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Receiver differential threshold voltage",
          "symbol": "VTH",
          "kind": "electrical",
          "unit": "mV",
          "min": -200,
          "typ": null,
          "max": 200,
          "conditions": "-7V≤VCM≤12V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Receiver output low voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "IO=4mA, VID=-200mV",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Receiver tri-state output current",
          "symbol": "IOZR",
          "kind": "electrical",
          "unit": "μA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "0≤VO≤VCC",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Receiver output short-circuit current",
          "symbol": "IOSR",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 7,
          "max": 95,
          "conditions": "0V≤VRO≤VCC; printed ±7 (typ) and ±95 (max)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply current",
          "symbol": "Icc",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 530,
          "max": 900,
          "conditions": "No load, RE=VCC, DI=GND or VCC, DE=VCC",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Supply current",
          "symbol": "Icc",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 475,
          "max": 600,
          "conditions": "No load, RE=VCC, DI=GND or VCC, DE=GND",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Supply current",
          "symbol": "Icc",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 530,
          "max": 1000,
          "conditions": "No load, RE=GND, DI=GND or VCC, DE=VCC",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Supply current",
          "symbol": "Icc",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 475,
          "max": 800,
          "conditions": "No load, RE=GND, DI=GND or VCC, DE=GND",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Standby mode supply current",
          "symbol": "ISHDN",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 0.05,
          "max": 10,
          "conditions": "DE=GND, RE=VCC",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "ESD protection, IEC61000-4-2 air-gap discharge (A, B, Y, Z)",
          "symbol": "",
          "kind": "electrical",
          "unit": "kV",
          "min": -16,
          "typ": null,
          "max": 16,
          "conditions": "IEC61000-4-2 air-gap; printed ±16",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "ESD protection, IEC61000-4-2 contact discharge (A, B, Y, Z)",
          "symbol": "",
          "kind": "electrical",
          "unit": "kV",
          "min": -8,
          "typ": null,
          "max": 8,
          "conditions": "IEC61000-4-2 contact; printed ±8",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "ESD protection, human body model (all pins)",
          "symbol": "",
          "kind": "electrical",
          "unit": "kV",
          "min": -4,
          "typ": null,
          "max": 4,
          "conditions": "HBM; printed ±4",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Driver propagation delay",
          "symbol": "tDPLH, tDPHL",
          "kind": "timing",
          "unit": "ns",
          "min": 200,
          "typ": null,
          "max": 1000,
          "conditions": "Fig.2 and 5, RL=54Ω, CL=50pF",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Driver output skew |tDPLH - tDPHL|",
          "symbol": "tDSKEW",
          "kind": "timing",
          "unit": "ns",
          "min": -140,
          "typ": null,
          "max": 140,
          "conditions": "Fig.2 and 5, RL=54Ω, CL=50pF; printed ±140",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Driver rise and fall time",
          "symbol": "tDR, tDF",
          "kind": "timing",
          "unit": "ns",
          "min": 250,
          "typ": null,
          "max": 900,
          "conditions": "Fig.2 and 5, RL=54Ω, CL=50pF",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Driver enable to output high",
          "symbol": "tDZH",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 2500,
          "conditions": "Fig.3 and 6, CL=100pF, S3 closed",
          "source_page": 8,
          "source": "datasheet"
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