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Ray Set visibility: public 60d9ea8 17d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "bl1587",
  "title": "BL1587",
  "brief": "BL(Shanghai Belling) RS-485/RS-422 ICs, SOP-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 ics",
    "bl1587",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "BL1587",
    "manufacturer": "BL(Shanghai Belling)",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Interface ICs",
    "subcategory": "RS-485/RS-422 ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/141becd068a37ae9668087cb51a7f10f.pdf",
    "parts": {
      "symbol": "bl1587.kicad_sym",
      "footprint": "bl1587.kicad_mod",
      "model_3d": "bl1587-hero.glb",
      "model_3d_plain": "bl1587-etched.glb",
      "model_3d_step": "bl1587-etched.step",
      "model_3d_step_plain": "bl1587.step",
      "lbr": "bl1587.lbr"
    },
    "distributor_links": {
      "lcsc": "C2841015"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T19:21:47Z",
      "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; active when /RE is low, high-impedance when /RE is high."
      },
      {
        "number": "2",
        "name": "/RE",
        "type": "input",
        "description": "Receiver output enable; RO is active when /RE is low and high-impedance when /RE is high (input range -0.3 V to VCC+0.3 V)."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver output enable; driver outputs are active when DE is high and high-impedance when DE is low (input range -0.3 V to VCC+0.3 V)."
      },
      {
        "number": "4",
        "name": "DI",
        "type": "input",
        "description": "Driver input; high on DI gives A high/B low, low gives A low/B high (input range -0.3 V to VCC+0.3 V)."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "6",
        "name": "A",
        "type": "bidirectional",
        "description": "Receiver non-inverting input and driver non-inverting output; rated ±13 V."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "Receiver inverting input and driver inverting output; rated ±13 V."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply, +5 V operation (4.5 V to 5.5 V), absolute maximum +7 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": [],
        "pages_sent": 8,
        "cost_usd": 0.0439,
        "at": "2026-10-22T19:21:38"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/141becd068a37ae9668087cb51a7f10f.pdf",
        "pages": 8,
        "sha256": "309a5483ffd8b3e3",
        "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": "bl1587.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bl1587-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          4.9,
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "488c0ed0c9565c06681ce21f832386c387785f3e5962f014b6f5414967c66869",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "BL(Shanghai Belling)",
      "Package": "SOP-8",
      "Category": "Interface ICs",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "309a5483ffd8b3e323ea11a8f01c5c5dfea23045a080eaf1ed202bccd2bfbcbe",
      "rows": [
        {
          "name": "Supply voltage (absolute maximum)",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Control input voltage",
          "symbol": "/RE, DE",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "-0.3 to VCC+0.3",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Driver input voltage",
          "symbol": "DI",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "-0.3 to VCC+0.3",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Driver output voltage",
          "symbol": "A, B",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -13,
          "typ": null,
          "max": 13,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Receiver input voltage",
          "symbol": "A, B",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -13,
          "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": null,
          "conditions": "-0.3 to VCC+0.3",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.5,
          "typ": null,
          "max": 5.5,
          "conditions": "TA=-40~+85°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Differential driver output (no load)",
          "symbol": "VOD1",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "Figure 1; printed as VCC",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Differential driver output",
          "symbol": "VOD2",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": null,
          "max": 2.1,
          "conditions": "VCC=5V, Figure 1, R=27Ω",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Change in magnitude of VOD",
          "symbol": "ΔVOD",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "Figure 1, R=27Ω",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Driver common-mode output voltage",
          "symbol": "VOC",
          "kind": "electrical",
          "unit": "V",
          "min": 1,
          "typ": null,
          "max": 3,
          "conditions": "Figure 1, R=27Ω",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Change in magnitude of VOC",
          "symbol": "ΔVOC",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "Figure 1, R=27Ω",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input high voltage",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "DE,DI,/RE",
          "source_page": 3,
          "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": 3,
          "source": "datasheet"
        },
        {
          "name": "DI input hysteresis",
          "symbol": "VHYS",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input current (A,B) at VIN=12V",
          "symbol": "IIN4",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 220,
          "conditions": "DE=GND, VCC=GND or 5.25V, VIN=12V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input current (A,B) at VIN=-7V",
          "symbol": "IIN4",
          "kind": "electrical",
          "unit": "µA",
          "min": -120,
          "typ": null,
          "max": null,
          "conditions": "DE=GND, VCC=GND or 5.25V, VIN=-7V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Driver short-circuit output current",
          "symbol": "IOSD",
          "kind": "electrical",
          "unit": "mA",
          "min": -100,
          "typ": null,
          "max": 100,
          "conditions": "A Pin Short to B Pin",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Receiver differential threshold voltage",
          "symbol": "VTH",
          "kind": "electrical",
          "unit": "mV",
          "min": -200,
          "typ": -125,
          "max": -50,
          "conditions": "-7V≤VCM≤12V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Receiver input hysteresis",
          "symbol": "ΔVTH",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 40,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Receiver output high voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 4,
          "typ": null,
          "max": null,
          "conditions": "IO=-8mA, VID=-50mV",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Receiver output low voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "IO=8mA, VID=-200mV",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Receiver three-state output current",
          "symbol": "IOZR",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Receiver input resistance",
          "symbol": "RIN",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 48,
          "typ": null,
          "max": null,
          "conditions": "-7V≤VCM≤12V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Receiver output short-circuit current",
          "symbol": "IOSR",
          "kind": "electrical",
          "unit": "mA",
          "min": 7,
          "typ": null,
          "max": 95,
          "conditions": "0V≤VRO≤VCC; printed ±7 to ±95",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Supply current, DE=VCC",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 900,
          "conditions": "No load, /RE=DI=GND or VCC, DE=VCC",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Supply current, DE=GND",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 900,
          "conditions": "No load, /RE=DI=GND or VCC, DE=GND",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Shutdown supply current",
          "symbol": "ISHDN",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "DE=GND, /RE=VCC, DI=VCC or GND",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Driver propagation delay low-to-high",
          "symbol": "tDPLH",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 13,
          "conditions": "Fig 3 and 5, RDIFF=54Ω, CL1=CL2=100pF",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Driver propagation delay high-to-low",
          "symbol": "tDPHL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 17,
          "conditions": "Fig 3 and 5, RDIFF=54Ω, CL1=CL2=100pF",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Driver output skew",
          "symbol": "tDSKEW",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "Fig 3 and 5, RDIFF=54Ω, CL1=CL2=100pF",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Driver rise/fall time",
          "symbol": "tDR, tDF",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 8,
          "conditions": "Fig 3 and 5, RDIFF=54Ω, CL1=CL2=100pF",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum data rate",
          "symbol": "FMAX",
          "kind": "timing",
          "unit": "Mbps",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Driver enable to output high",
          "symbol": "tDZH",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "Fig 4 and 6, CL=100pF, S2 Closed",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Driver enable to output low",
          "symbol": "tDZL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 28,
          "conditions": "Fig 4 and 6, CL=100pF, S1 Closed",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Driver disable time from low",
          "symbol": "tDLZ",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 19,
          "conditions": "Fig 4 and 6, CL=15pF, S1 Closed",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Driver disable time from high",
          "symbol": "tDHZ",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 16,
          "conditions": "Fig 4 and 6, CL=15pF, S2 Closed",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Receiver input to output delay",
          "symbol": "tRPLH, tRPHL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 42,
          "conditions": "Fig 7 and 9; rise and fall time of VID≦15ns",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Receiver propagation delay difference",
          "symbol": "tRSKD",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "Fig 7 and 9; rise and fall time of VID≦15ns",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Receiver enable to output low",
          "symbol": "tRZL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "Fig 2 and 8, CRL=15pF, S1 Closed",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Receiver enable to output high",
          "symbol": "tRZH",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 45,
          "conditions": "Fig 2 and 8, CRL=15pF, S2 Closed",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Receiver disable from low",
          "symbol": "tRLZ",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "Fig 2 and 8, CRL=15pF, S1 Closed",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Receiver disable from high",
          "symbol": "tRHZ",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 45,
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