CBM485AS8

{
  "schema_version": 1,
  "type": "component",
  "slug": "cbm485as8",
  "title": "CBM485AS8",
  "brief": "Corebai Microelectronics 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": [
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    "interface",
    "cbm485as8",
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    "extractor-text"
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  "component": {
    "mpn": "CBM485AS8",
    "manufacturer": "Corebai Microelectronics",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588884873738399744",
    "parts": {
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      "model_3d_step_plain": "cbm485as8.step",
      "lbr": "cbm485as8.lbr"
    },
    "distributor_links": {
      "lcsc": "C476464"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T07:06:32Z",
      "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, three-state, driven high when A-B is above the threshold or the inputs are open, with VOH of at least 3.5V at IO = -4mA and VOL of at most 0.4V at IO = 4mA."
      },
      {
        "number": "2",
        "name": "RE",
        "type": "input",
        "description": "Receiver output enable, active low (RO is enabled when RE = 0 and high-impedance when RE = 1), with input high threshold of at least 2.0V and input low threshold of at most 0.8V."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver output enable, active high (driver outputs are enabled when DE = 1 and high-impedance when DE = 0), with input high threshold of at least 2.0V and input low threshold of at most 0.8V."
      },
      {
        "number": "4",
        "name": "DI",
        "type": "input",
        "description": "Driver input, where a low on DI with DE high drives the non-inverting output low and the inverting output high, with input voltage limited to -0.5V to VCC+0.5V."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground, the reference for all device voltages."
      },
      {
        "number": "6",
        "name": "A",
        "type": "bidirectional",
        "description": "Non-inverting RS-485 receiver input and driver output, rated -8V to +12.5V with common-mode range -7V to +12V."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "Inverting RS-485 receiver input and driver output, rated -8V to +12.5V with common-mode range -7V to +12V."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply, operating from a single 5V ±5% supply with an absolute maximum of 12V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
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          "vision extraction: provenance cannot be text-verified; needs consensus"
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        "pages_sent": 11,
        "cost_usd": 0.2209,
        "at": "2026-10-18T07:05:21"
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      "pins": {
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  "metadata": {
    "specs": {
      "Manufacturer": "Corebai Microelectronics",
      "Package": "SOIC-8",
      "Category": "Interface",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
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          "name": "Supply Voltage (VCC)",
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          "max": 12,
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          "name": "Control Input Voltage",
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        {
          "name": "Driver Input Voltage (DI)",
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          "name": "Receiver Input Voltage (A, B)",
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          "source_page": 2,
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        {
          "name": "Operating Temperature Range",
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          "kind": "recommended_operating",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
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        {
          "name": "Storage Temperature Range",
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          "unit": "℃",
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          "typ": null,
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        {
          "name": "Lead Temperature (soldering, 10 sec)",
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          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
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          "conditions": "Soldering, 10 sec",
          "source_page": 2,
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        },
        {
          "name": "Continuous Power Dissipation, 8-Pin SOP",
          "symbol": "PD",
          "kind": "thermal",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 471,
          "conditions": "TA = +70℃; derate 5.88 mW/℃ above +70℃",
          "source_page": 2,
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        {
          "name": "Supply voltage tolerance (test condition)",
          "symbol": "VCC",
          "kind": "tolerance",
          "unit": "%",
          "min": -5,
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          "max": 5,
          "conditions": "VCC = 5V ±5%, TA = TMIN to TMAX (table header)",
          "source_page": 3,
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        },
        {
          "name": "Differential Driver Output (no load)",
          "symbol": "VOD1",
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        {
          "name": "Differential Driver Output (with load, RS-422)",
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          "name": "Differential Driver Output (with load, RS-485)",
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          "typ": null,
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        {
          "name": "Change in Magnitude of Driver Differential Output Voltage for Complementary Output States",
          "symbol": "∆VOD",
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          "typ": null,
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          "name": "Driver Common-Mode Output Voltage",
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          "name": "Change in Magnitude of Driver Common-Mode Output Voltage for Complementary Output States",
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          "name": "Input High Voltage",
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          "kind": "electrical",
          "unit": "V",
          "min": 2,
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          "name": "Input Low Voltage",
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          "kind": "electrical",
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        {
          "name": "Input Current",
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          "kind": "electrical",
          "unit": "μA",
          "min": -2,
          "typ": null,
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          "source": "datasheet"
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        {
          "name": "Input Current (A, B)",
          "symbol": "IIN2",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "DE = 0V; VCC = 0V or 5.25V; VIN = 12V",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Input Current (A, B)",
          "symbol": "IIN2",
          "kind": "electrical",
          "unit": "mA",
          "min": -0.8,
          "typ": null,
          "max": null,
          "conditions": "DE = 0V; VCC = 0V or 5.25V; VIN = -7V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Receiver Differential Threshold Voltage",
          "symbol": "VTH",
          "kind": "electrical",
          "unit": "V",
          "min": -0.2,
          "typ": null,
          "max": 0.2,
          "conditions": "-7V ≤ VCM ≤ 12V",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Receiver Input Hysteresis",
          "symbol": "∆VTH",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 70,
          "max": null,
          "conditions": "VCM = 0V",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Receiver Output High Voltage",
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          "kind": "electrical",
          "unit": "V",
          "min": 3.5,
          "typ": null,
          "max": null,
          "conditions": "IO = -4mA, VID = 200mV",
          "source_page": 3,
          "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": 3,
          "source": "datasheet"
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        {
          "name": "Three-State (high impedance) Output Current at Receiver",
          "symbol": "IOZR",
          "kind": "electrical",
          "unit": "μA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "0.4V ≤ VO ≤ 2.4V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Receiver Input Resistance",
          "symbol": "RIN",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 12,
          "typ": null,
          "max": null,
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          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "No-Load Supply Current (Note 3)",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 500,
          "max": 900,
          "conditions": "DE = VCC",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "No-Load Supply Current (Note 3)",
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          "kind": "electrical",
          "unit": "μA",
          "min": null,
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          "max": 500,
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          "source_page": 3,
          "source": "datasheet"
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          "name": "Driver Short-Circuit Current, VO = High",
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          "typ": null,
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          "name": "Driver Short-Circuit Current, VO = Low",
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          "name": "Receiver Short-Circuit Current",
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          "source_page": 3,
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          "name": "ESD Protection (Human Body Model)",
          "symbol": "",
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          "name": "Driver Input to Output (tPLH)",
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          "name": "Driver Output Skew to Output",
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          "name": "Driver Enable to Output High",
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          "source": "datasheet"
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          "kind": "timing",
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          "name": "Differential Receiver Skew",
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