BSP48505AS

{
  "schema_version": 1,
  "type": "component",
  "slug": "bsp48505as",
  "title": "BSP48505AS",
  "brief": "BORN RS-485 / RS-422 ICs, SOIC-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",
    "bsp48505as",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "BSP48505AS",
    "manufacturer": "BORN",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603358150183428096",
    "parts": {
      "symbol": "bsp48505as.kicad_sym",
      "footprint": "bsp48505as.kicad_mod",
      "model_3d": "bsp48505as-hero.glb",
      "model_3d_plain": "bsp48505as-etched.glb",
      "model_3d_step": "bsp48505as-etched.step",
      "model_3d_step_plain": "bsp48505as.step",
      "lbr": "bsp48505as.lbr"
    },
    "distributor_links": {
      "lcsc": "C22440685"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T08:00:28Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "error"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RO",
        "type": "output",
        "description": "Receiver data output: goes high when VID is above VTH+ and low when VID is below VTH−, with VOH of at least VCC-0.5 V at IOH=-4 mA and VOL of at most 0.4 V at 4 mA, and it holds high (fail-safe) on an open, shorted or idle bus."
      },
      {
        "number": "2",
        "name": "REB",
        "type": "input",
        "description": "Receiver enable, active low with an internal resistor pull-up; driving it high or leaving it open puts RO in high impedance, and VIH must be at least 2.0 V with VIL at most 0.8 V."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver enable, active high with an internal pull-down to GND; when low (or open) the driver outputs A and B are high impedance, with logic thresholds VIH at least 2.0 V and VIL at most 0.8 V."
      },
      {
        "number": "4",
        "name": "DI",
        "type": "input",
        "description": "Driver data input with an internal pull-up to VCC; when the driver is enabled a high level drives A high and B low, with logic thresholds VIH at least 2.0 V and VIL at most 0.8 V."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for all device voltages; all voltage limits in the datasheet are referenced to GND."
      },
      {
        "number": "6",
        "name": "A",
        "type": "bidirectional",
        "description": "RS-485 bus non-inverting input/output; bus input voltage range is -7 V to 12 V, with absolute maximum bus voltage of -8 V to 13 V."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "RS-485 bus inverting input/output; bus input voltage range is -7 V to 12 V, with absolute maximum bus voltage of -8 V to 13 V."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply pin with recommended range 3.0 V to 5.5 V referenced to GND; a 100 nF to 220 nF decoupling capacitor should be placed as close to this pin as possible."
      }
    ],
    "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: Pin numbers and functions for the SOIC8 package are taken from the page 2 pin table (RO 1, REB 2, DE"
        ],
        "pages_sent": 17,
        "cost_usd": 0.06,
        "at": "2026-10-19T07:58:27"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603358150183428096",
        "pages": 17,
        "sha256": "37573193852eb85d",
        "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": "bsp48505as.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": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bsp48505as-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,
          1.75
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "f9bb0cbaf76bac59f5ee1440d3c0d7a0c029a78ae0b5ead3e58de7745b1ba8c5",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "BORN",
      "Package": "SOIC-8",
      "Category": "Interface",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "37573193852eb85d8507a14f7ed0159e34b96a24106fbcca2cda4f0ec4e15304",
      "rows": [
        {
          "name": "Supply voltage",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Bus voltage A, B",
          "symbol": "VIO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -8,
          "typ": null,
          "max": 13,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Differential voltage between bus A and B",
          "symbol": "VIO_DIF",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -8,
          "typ": null,
          "max": 13,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Logic input voltage (DI, DE, REB)",
          "symbol": "VIO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Logic output voltage (RO)",
          "symbol": "VIO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "◦C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "◦C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage, referenced to GND",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3,
          "typ": 5,
          "max": 5.5,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Bus input voltage",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": -7,
          "typ": null,
          "max": 12,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "High-level input threshold",
          "symbol": "VIH",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Low-level input threshold",
          "symbol": "VIL",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 0.8,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Differential load resistance",
          "symbol": "RL",
          "kind": "recommended_operating",
          "unit": "Ω",
          "min": 54,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Data rate: BSP48505Ax",
          "symbol": "1/tUI",
          "kind": "recommended_operating",
          "unit": "Mbps",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating ambient temperature",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "◦C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "◦C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-ambient thermal resistance (SOIC8)",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "◦C/W",
          "min": null,
          "typ": 120,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Differential output voltage",
          "symbol": "|VOD|",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": 3.2,
          "max": null,
          "conditions": "RL = 60Ω,-7V≤Vtest≤12V, 图 17",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Differential output voltage",
          "symbol": "|VOD|",
          "kind": "electrical",
          "unit": "V",
          "min": 2.1,
          "typ": 3.2,
          "max": null,
          "conditions": "RL = 60Ω,-7V≤Vtest≤ 12V, 4.5V≤VCC≤5.5V, 图 17",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Differential output voltage",
          "symbol": "|VOD|",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": 4.2,
          "max": null,
          "conditions": "RL = 100Ω, CL = 50pF, 图 18",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Differential output voltage",
          "symbol": "|VOD|",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": 3.6,
          "max": null,
          "conditions": "RL = 54Ω ,CL = 50pF, 图 18",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Differential output voltage change",
          "symbol": "|∆VOD|",
          "kind": "electrical",
          "unit": "mV",
          "min": -50,
          "typ": null,
          "max": 50,
          "conditions": "RL = 54Ω 或 100Ω, CL = 50pF, 图 18",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Common-mode output voltage",
          "symbol": "VOC",
          "kind": "electrical",
          "unit": "V",
          "min": 1,
          "typ": null,
          "max": 3.3,
          "conditions": "RL = 54Ω 或 100Ω ,CL = 50pF, 图 18",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Steady-state common-mode output voltage change",
          "symbol": "∆VOC(SS)",
          "kind": "electrical",
          "unit": "mV",
          "min": -50,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Common-mode output voltage change, peak-to-peak",
          "symbol": "VOC(PP)",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 450,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Driver short-circuit output current",
          "symbol": "|IOS|",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 100,
          "max": 150,
          "conditions": "DE = VCC, -7V≤VO ≤ 12V 或 A 和 B 短接",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Bus input current",
          "symbol": "II",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 75,
          "max": 125,
          "conditions": "DE=0, VCC=0V, VI=12V or 5.5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Bus input current",
          "symbol": "II",
          "kind": "electrical",
          "unit": "uA",
          "min": -100,
          "typ": -40,
          "max": null,
          "conditions": "DE=0, VCC=0V, VI=-7V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Bus input impedance",
          "symbol": "RI",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 96,
          "typ": null,
          "max": null,
          "conditions": "VA = -7V,VB =12V 或 VA =12V,VB=-7V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Positive-going input threshold voltage",
          "symbol": "VTH+",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": -110,
          "max": -50,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Negative-going input threshold voltage",
          "symbol": "VTH−",
          "kind": "electrical",
          "unit": "mV",
          "min": -200,
          "typ": -140,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output low-level voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.2,
          "max": 0.4,
          "conditions": "IOH=4mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-impedance output current",
          "symbol": "IOZR",
          "kind": "electrical",
          "unit": "uA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "REB=VCC,VO=0V 或 VCC",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Receiver short-circuit output current",
          "symbol": "IOSR",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 95,
          "conditions": "REB=DE=0V, 图 19",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input current (DI, DE, REB)",
          "symbol": "IIN",
          "kind": "electrical",
          "unit": "uA",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "0V≤VIN ≤ VCC",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Hysteresis voltage",
          "symbol": "VHYS",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 30,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Static supply current, driver and receiver enabled",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.9,
          "max": 1.4,
          "conditions": "REB=0V, DE=VCC, 空载",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Static supply current, driver enabled, receiver off",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.55,
          "max": 0.9,
          "conditions": "REB=VCC, DE=VCC, 空载",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Static supply current, driver off, receiver enabled",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.5,
          "max": 0.8,
          "conditions": "REB=0V,DE=0V, 空载",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Static supply current, driver and receiver off",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "REB=VCC,DE = 0V, 空载",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal shutdown temperature",
          "symbol": "TSD",
          "kind": "electrical",
          "unit": "◦C",
          "min": null,
          "typ": 170,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal shutdown hysteresis",
          "symbol": "TSD",
          "kind": "electrical",
          "unit": "◦C",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Differential output rise/fall time (BSP48505A)",
          "symbol": "tf,tr",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 150,
          "max": 500,
          "conditions": "RL=54Ω, CL=50pF, 图 20",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Driver propagation delay (BSP48505A)",
          "symbol": "tPHL,tPLH",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 100,
          "max": 250,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Driver pulse skew (BSP48505A)",
          "symbol": "tSK(P)",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "|tPHL − tPLH|",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Driver disable time (BSP48505A)",
          "symbol": "tPHZ,tPLZ",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 10,
          "max": 30,
          "conditions": "图 21, 图 22",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Driver enable time, REB = 0V (BSP48505A)",
          "symbol": "tPZH,tPZL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 300,
          "max": 800,
          "conditions": "REB = 0V, 图 21, 图 22",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Driver enable time, REB = VCC (BSP48505A)",
          "symbol": "tPZH,tPZL",
          "kind": "timing",
          "unit": "us",
          "min": null,
          "typ": 6,
          "max": 12,
          "conditions": "REB = VCC, 图 21, 图 22",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Receiver output rise/fall time (BSP48505A)",
          "symbol": "tf,tr",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 10,
          "max": 20,
          "conditions": "CL=15pF, 图 23",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Receiver propagation delay (BSP48505A)",
          "symbol": "tPHL,tPLH",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 50,
          "max": 100,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Receiver pulse skew (BSP48505A)",
          "symbol": "tSK(P)",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 7,
          "conditions": "|tPHL, tPLH|",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Receiver disable time (BSP48505A)",
          "symbol": "tPHZ,tPLZ",
          "kind": "timing",
          "unit": "ns",
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