BL1590

{
  "schema_version": 1,
  "type": "component",
  "slug": "bl1590",
  "title": "BL1590",
  "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",
    "bl1590",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "BL1590",
    "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/34cd0138c187650fc0e8f84cd6cde8e7.pdf",
    "parts": {
      "symbol": "bl1590.kicad_sym",
      "footprint": "bl1590.kicad_mod",
      "model_3d": "bl1590-hero.glb",
      "model_3d_plain": "bl1590-etched.glb",
      "model_3d_step": "bl1590-etched.step",
      "model_3d_step_plain": "bl1590.step",
      "lbr": "bl1590.lbr"
    },
    "distributor_links": {
      "lcsc": "C2986261"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T22:36:25Z",
      "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, driven high when A-B > -10mV or when the inputs are open/shorted, low when A-B < -200mV, and High-Z when /RE is high."
      },
      {
        "number": "2",
        "name": "/RE",
        "type": "input",
        "description": "Receiver output enable: RO is active when /RE is low and High-Z when /RE is high."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver output enable: driver outputs are active when DE is high and High-Z when DE is low."
      },
      {
        "number": "4",
        "name": "DI",
        "type": "input",
        "description": "Driver input, with VIH min 2.0V and VIL max 0.8V."
      },
      {
        "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, with ±13V absolute maximum voltage and ±15kV IEC 61000-4-2 contact ESD protection."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "Inverting receiver input and inverting driver output, with ±13V absolute maximum voltage and ±15kV IEC 61000-4-2 contact ESD protection."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply, operating range 3.0V to 5.5V with absolute maximum of +7V."
      }
    ],
    "provenance": {
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      "factory_chain": {
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        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 7,
        "cost_usd": 0.0471,
        "at": "2026-10-22T22:36:12"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/34cd0138c187650fc0e8f84cd6cde8e7.pdf",
        "pages": 7,
        "sha256": "a00096f54ad6a8a5",
        "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
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
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    "models_3d": [
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        "units": "mm",
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        "seat": "z = 0",
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        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "BL(Shanghai Belling)",
      "Package": "SOP-8",
      "Category": "Interface ICs",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "a00096f54ad6a8a5a6923f45abd78cf0744767f1a59c81da229e480bbab0980a",
      "rows": [
        {
          "name": "Supply voltage (abs max)",
          "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": "to VCC+0.3 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Driver input voltage",
          "symbol": "DI",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "to VCC+0.3 V",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Driver output voltage",
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          "kind": "absolute_maximum",
          "unit": "V",
          "min": -13,
          "typ": null,
          "max": 13,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
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        {
          "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": "to VCC+0.3 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating supply voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3,
          "typ": null,
          "max": 5.5,
          "conditions": "TA=-40°C to +125°C",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Differential driver output",
          "symbol": "VOD2",
          "kind": "electrical",
          "unit": "V",
          "min": 2.7,
          "typ": 3.4,
          "max": null,
          "conditions": "VCC=5V, Fig 1, R=27Ω",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Differential driver output",
          "symbol": "VOD2",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": 1.8,
          "max": null,
          "conditions": "VCC=3V, Fig 1, R=27Ω",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Change in magnitude of VOD",
          "symbol": "ΔVOD",
          "kind": "electrical",
          "unit": "V",
          "min": -0.2,
          "typ": null,
          "max": 0.2,
          "conditions": "Fig 1, R=27Ω",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Driver common-mode output voltage",
          "symbol": "VOC",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "Fig 1, R=27Ω; printed VCC/2 to 3.0",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Change in magnitude of VOC",
          "symbol": "ΔVOC",
          "kind": "electrical",
          "unit": "V",
          "min": -0.2,
          "typ": null,
          "max": 0.2,
          "conditions": "Fig 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)",
          "symbol": "IIN4",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 800,
          "conditions": "DE=GND, VCC=GND or VCC, VIN=12V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input current (A, B)",
          "symbol": "IIN4",
          "kind": "electrical",
          "unit": "µA",
          "min": -800,
          "typ": null,
          "max": null,
          "conditions": "DE=GND, VCC=GND or VCC, VIN=-7V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Driver short-circuit output current",
          "symbol": "IOSD",
          "kind": "electrical",
          "unit": "mA",
          "min": -250,
          "typ": null,
          "max": 250,
          "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": -10,
          "conditions": "-7V≤VCM≤12V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Receiver input hysteresis",
          "symbol": "ΔVTH",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 25,
          "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": "VCC=5V, IO=-8mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Receiver output high voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.45,
          "typ": null,
          "max": null,
          "conditions": "VCC=3V, IO=-4mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Receiver output low voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "VCC=5V, IO=8mA",
          "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": 12,
          "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": -100,
          "typ": null,
          "max": 100,
          "conditions": "0V≤VRO≤VCC",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Supply current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1.5,
          "max": 2,
          "conditions": "No load, /RE=DI=GND or VCC, DE=VCC",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Supply current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1.2,
          "max": 2,
          "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": 2,
          "conditions": "DE=GND, /RE=VCC, DI=VCC or GND",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Driver propagation delay low-to-high",
          "symbol": "tDPLH",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 11,
          "max": 28,
          "conditions": "Fig 3 and 5, RDIFF=54Ω, CL1=CL2=100pF",
          "source_page": 4,
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          "name": "Driver propagation delay high-to-low",
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          "typ": 16,
          "max": 35,
          "conditions": "Fig 3 and 5, RDIFF=54Ω, CL1=CL2=100pF",
          "source_page": 4,
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        {
          "name": "Driver output skew |tDPLH-tDPHL|",
          "symbol": "tDSKEW",
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          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "Fig 3 and 5, RDIFF=54Ω, CL1=CL2=100pF",
          "source_page": 4,
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        {
          "name": "Driver rise/fall time",
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          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 6.5,
          "max": null,
          "conditions": "Fig 3 and 5, RDIFF=54Ω, CL1=CL2=100pF",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Maximum data rate",
          "symbol": "FMAX",
          "kind": "timing",
          "unit": "Mbps",
          "min": 16,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Driver enable to output high",
          "symbol": "tDZH",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 25,
          "max": 50,
          "conditions": "Fig 4 and 6, CL=100pF, S2 Closed",
          "source_page": 4,
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        {
          "name": "Driver enable to output low",
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          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 28,
          "max": 80,
          "conditions": "Fig 4 and 6, CL=100pF, S1 Closed",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Driver disable time from low",
          "symbol": "tDLZ",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 22,
          "max": 45,
          "conditions": "Fig 4 and 6, CL=15pF, S1 Closed",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Driver disable time from high",
          "symbol": "tDHZ",
          "kind": "timing",
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          "min": null,
          "typ": 21,
          "max": 80,
          "conditions": "Fig 4 and 6, CL=15pF, S2 Closed",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "Receiver propagation delay",
          "symbol": "tRPLH, tRPHL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 45,
          "max": 70,
          "conditions": "Fig 7 and 9, |VID|≥2.0V; rise and fall time of VID ≤15ns",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "Receiver skew |tRPLH-tRPHL|",
          "symbol": "tRSKD",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "Fig 7 and 9, |VID|≥2.0V; rise and fall time of VID ≤15ns",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "Receiver enable to output low",
          "symbol": "tRZL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 12,
          "max": 25,
          "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",
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          "typ": 8,
          "max": 25,
          "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": 9,
          "max": 25,
          "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": 10,
          "max": 25,
          "conditions": "Fig 2 and 8, CRL=15pF, S2 Closed",
          "source_page": 5,
          "source": "datasheet"
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          "name": "Shutdown time",
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          "kind": "timing",
          "unit": "ns",
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          "typ": null,
          "max": 500,
          "conditions": "",
          "source_page": 5,
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        {
          "name": "Driver enable from shutdown to output high",
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          "unit": "µs",
          "min": null,
          "typ": 3,
          "max": 5,
          "conditions": "Fig 4 and 6, CL=100pF, S2 Closed",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "Driver enable from shutdown to output low",
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          "min": null,
          "typ": 3,
          "max": 5,
          "conditions": "Fig 4 and 6, CL=100pF, S1 Closed",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "Receiver enable from shutdown to output high",
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          "min": null,
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          "conditions": "Fig 2 and 8, CRL=15pF, S2 Closed",
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        {
          "name": "Receiver enable from shutdown to output low",
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          "conditions": "Fig 2 and 8, CRL=15pF, S1 Closed",
          "source_page": 5,
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  "sections": [
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    "info"
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  "discovery_triggers": [
    "bl1590"
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  "discovery_pitch": "BL1590 (BL(Shanghai Belling)) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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