CSM9241

{
  "slug": "csm9241",
  "version": "0.1.0",
  "type": "component",
  "description": "Nanjing Zhongke Microelectronics Receivers & Transceivers, SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic ics",
    "csm9241",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "csm9241.kicad_sym",
    "csm9241.kicad_mod",
    "csm9241.glb",
    "csm9241.step",
    "csm9241.lbr",
    "docs/hero.png",
    "docs/csm9241-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "csm9241-hero.glb",
    "csm9241-hero.overlay.json",
    "csm9241-etched.glb"
  ],
  "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": {
      "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": [
          "extractor flagged: Datasheet order table lists package as SOP-8 and text says 8-pin SO; the SO-8 hint is treated as the"
        ],
        "pages_sent": 15,
        "cost_usd": 0.0624,
        "at": "2026-10-31T12:25:16"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/6cab3cb8505496bba36ec2328d6180a6.pdf",
        "pages": 15,
        "sha256": "7ba3c2e260ec7b98",
        "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": "csm9241.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "csm9241-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "5b4f7eeb84090f7e9d9992a629c57dae580cb9716062b39db88958c62b932297",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "SOP-8",
      "source_page": 10,
      "D": {
        "nom_mm": 4.9,
        "range_mm": [
          4.8,
          5.0
        ]
      },
      "E1": {
        "nom_mm": 3.9,
        "range_mm": [
          3.8,
          4.0
        ]
      },
      "E": {
        "nom_mm": 6.0,
        "range_mm": [
          5.8,
          6.2
        ]
      },
      "e": {
        "nom_mm": 1.27,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 1.55,
        "range_mm": [
          1.35,
          1.75
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "csm9241.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}