CSM9241

{
  "schema_version": 1,
  "type": "component",
  "slug": "csm9241",
  "title": "CSM9241",
  "brief": "Nanjing Zhongke Microelectronics Receivers & Transceivers, SO-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",
    "logic ics",
    "csm9241",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "CSM9241",
    "manufacturer": "Nanjing Zhongke Microelectronics",
    "package": "SO-8",
    "pin_count": 8,
    "category": "Logic ICs",
    "subcategory": "Receivers & Transceivers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/6cab3cb8505496bba36ec2328d6180a6.pdf",
    "parts": {
      "symbol": "csm9241.kicad_sym",
      "footprint": "csm9241.kicad_mod",
      "model_3d": "csm9241-hero.glb",
      "model_3d_plain": "csm9241-etched.glb",
      "model_3d_step": "csm9241-etched.step",
      "model_3d_step_plain": "csm9241.step",
      "lbr": "csm9241.lbr"
    },
    "distributor_links": {
      "lcsc": "C2916913"
    },
    "distributor_check": {
      "checked_at": "2026-10-31T12:25:30Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD",
        "type": "power_in",
        "description": "Logic power supply, +4.5V to +5.5V DC."
      },
      {
        "number": "2",
        "name": "TX",
        "type": "input",
        "description": "Transmit input with internal pull-up to VDD; low level below 1.5V, high level above 3.5V."
      },
      {
        "number": "3",
        "name": "CS",
        "type": "input",
        "description": "Active-low chip select input with internal pull-up to VDD; low enables transmit mode, high selects receive mode and resets a fault."
      },
      {
        "number": "4",
        "name": "FAULT",
        "type": "output",
        "description": "Active-low fault detection output asserted on over temperature or short circuit to VBAT, with output low voltage max 0.4V at 1mA."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (0V)."
      },
      {
        "number": "6",
        "name": "K",
        "type": "bidirectional",
        "description": "Transmit/receive K bus line, operating range 6V to 36V, compared internally to VBAT/2 for receive."
      },
      {
        "number": "7",
        "name": "VBAT",
        "type": "power_in",
        "description": "Battery power supply, +6V to +36V DC."
      },
      {
        "number": "8",
        "name": "RX",
        "type": "output",
        "description": "Receiver output with internal pull-up to VDD, low when K is below VBAT/2 and high when above, driving CMOS or 1 LSTTL load."
      }
    ],
    "provenance": {
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        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Datasheet order table lists package as SOP-8 and text says 8-pin SO; the SO-8 hint is treated as the"
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        "at": "2026-10-31T12:25:16"
      },
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        "pages": 15,
        "sha256": "7ba3c2e260ec7b98",
        "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": {
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    "package_dims": {
      "package_code": "SOP-8",
      "source_page": 10,
      "D": {
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      "A": {
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  "metadata": {
    "specs": {
      "Manufacturer": "Nanjing Zhongke Microelectronics",
      "Package": "SO-8",
      "Category": "Logic ICs",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
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          "name": "Voltage on VBAT",
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          "min": -24,
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          "max": 45,
          "conditions": "Referenced to ground",
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        {
          "name": "Current on any pin (except VBAT, K)",
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        {
          "name": "Operating Temperature",
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          "name": "Junction and Storage Temperature",
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        {
          "name": "Thermal Impedance",
          "symbol": "",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 125,
          "max": null,
          "conditions": "",
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        {
          "name": "Operating range VDD",
          "symbol": "VDD",
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          "min": 4.5,
          "typ": null,
          "max": 5.5,
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        {
          "name": "Operating range VBAT",
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        {
          "name": "Operating range K",
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          "kind": "recommended_operating",
          "unit": "V",
          "min": 6,
          "typ": null,
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        },
        {
          "name": "CS, TX Input Low Voltage",
          "symbol": "VILT",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.5,
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        },
        {
          "name": "CS, TX Input High Voltage",
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          "source": "datasheet"
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        {
          "name": "CS, TX Input Pull-up Resistance",
          "symbol": "RTX",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 10,
          "typ": 20,
          "max": 40,
          "conditions": "VDD = 5.5 V, or CS=1.5V, 3.5 V; Full",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "K Output Low Voltage",
          "symbol": "VOLK",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "RL = 510Ω ± 5 %, VBAT = 6 to 18V; Full (printed 0.2VBAT)",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "K Output Low Voltage",
          "symbol": "VOLK",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.2,
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        },
        {
          "name": "K Output High Voltage",
          "symbol": "VOHK",
          "kind": "electrical",
          "unit": "V",
          "min": 0.95,
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          "source_page": 8,
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        },
        {
          "name": "K Rise Time",
          "symbol": "tr",
          "kind": "timing",
          "unit": "μs",
          "min": null,
          "typ": null,
          "max": 9,
          "conditions": "See Test Circuit; Full",
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        {
          "name": "K Fall Time",
          "symbol": "tf",
          "kind": "timing",
          "unit": "μs",
          "min": null,
          "typ": null,
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          "conditions": "See Test Circuit; Full",
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        {
          "name": "K Output Sink Resistance",
          "symbol": "Rsi",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 110,
          "conditions": "CS = 0 V, TX = 0 V; Full",
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        {
          "name": "K Input Low Voltage",
          "symbol": "VILK",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.35,
          "conditions": "Full (printed 0.35VBAT)",
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          "source": "datasheet"
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        {
          "name": "K Input High Voltage",
          "symbol": "VIHK",
          "kind": "electrical",
          "unit": "V",
          "min": 0.65,
          "typ": null,
          "max": null,
          "conditions": "Full (printed 0.65VBAT)",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "K Input Currents",
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          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 3,
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        {
          "name": "RX Output Low Voltage",
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          "conditions": "VILK=0.35VBAT, IOLR = 1 mA; Full",
          "source_page": 8,
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        {
          "name": "RX Pull-up Resistance",
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          "kind": "electrical",
          "unit": "kΩ",
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          "typ": null,
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        {
          "name": "RX Turn On Delay",
          "symbol": "td(on)",
          "kind": "timing",
          "unit": "μs",
          "min": 1,
          "typ": null,
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          "conditions": "RL = 510Ω ± 5 %, VBAT = 6 to 18 V, CL = 10 nF; Full",
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        {
          "name": "RX Turn Off Delay",
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          "name": "Bat Supply Current On",
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          "max": 3,
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        {
          "name": "Bat Supply Current Off",
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          "name": "Bat Supply Current Standby",
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          "name": "Temperature Shutdown Hysteresis",
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          "kind": "electrical",
          "unit": "°C",
          "min": null,
          "typ": 30,
          "max": null,
          "conditions": "",
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          "source": "datasheet"
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        {
          "name": "Transmission Frequency",
          "symbol": "fK-RXK",
          "kind": "electrical",
          "unit": "kHz",
          "min": 50,
          "typ": null,
          "max": 200,
          "conditions": "6 V < VBAT < 16 V, RK = 510 Ω, CK ≦1.3 nF; Full",
          "source_page": 9,
          "source": "datasheet"
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