CS4585EO

{
  "slug": "cs4585eo",
  "version": "0.1.0",
  "type": "component",
  "description": "CRMICRO RS-485/RS-422 ICs, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "communication interface chip",
    "cs4585eo",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cs4585eo.kicad_sym",
    "cs4585eo.kicad_mod",
    "cs4585eo.glb",
    "cs4585eo.step",
    "cs4585eo.lbr",
    "docs/hero.png",
    "docs/cs4585eo-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cs4585eo-hero.glb",
    "cs4585eo-hero.overlay.json"
  ],
  "component": {
    "mpn": "CS4585EO",
    "manufacturer": "CRMICRO",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Communication Interface Chip",
    "subcategory": "RS-485/RS-422 ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/7338f5392993300bc26a9a4e5fdb311d.pdf",
    "parts": {
      "symbol": "cs4585eo.kicad_sym",
      "footprint": "cs4585eo.kicad_mod",
      "model_3d": "cs4585eo-hero.glb",
      "model_3d_plain": "cs4585eo.glb",
      "model_3d_step": "cs4585eo-etched.step",
      "model_3d_step_plain": "cs4585eo.step",
      "lbr": "cs4585eo.lbr"
    },
    "distributor_links": {
      "lcsc": "C7421641"
    },
    "distributor_check": {
      "checked_at": "2026-11-13T08:56:42Z",
      "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 (tri-state) that is high when A-B ≥ -0.05V or when A and B are open or shorted, and low when A-B ≤ -0.2V."
      },
      {
        "number": "2",
        "name": "RE",
        "type": "input",
        "description": "Active-low receiver output enable that enables RO when low and puts RO in high impedance when high."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver output enable that enables the driver outputs when high and puts them in high impedance when low."
      },
      {
        "number": "4",
        "name": "DI",
        "type": "input",
        "description": "Driver input where DI low gives A low and B high, and DI high gives A high and B low."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "6",
        "name": "A",
        "type": "bidirectional",
        "description": "Receiver input and driver output (non-inverting RS-485 bus line) with ±15kV HBM ESD protection and a -7V to +12V common-mode range."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "Receiver input and driver output (inverting RS-485 bus line) with ±15kV HBM ESD protection and a -7V to +12V common-mode range."
      },
      {
        "number": "8",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply, 5V ±5% operating with an absolute maximum of -0.3 to 7V."
      }
    ],
    "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+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet covers CS4585EO and CS4585EP but does not state which suffix maps to which package. SO; The pin table on page 4 describes pins 3 and 4 with the names Y and Z for the driver outputs, while ; The datasheet gives no function text for GND (pin 5) or VDD (pin 8) beyond 'ground' and 'power suppl",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 13,
        "cost_usd": 0.0184,
        "at": "2026-11-13T08:56:30"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/7338f5392993300bc26a9a4e5fdb311d.pdf",
        "pages": 13,
        "sha256": "7a7405a0b6a7ceb0",
        "source_tier": "lcsc"
      },
      "cad": "land: KiCad official (CC-BY-SA 4.0); 3D: generated from the datasheet",
      "model_3d_generated": {
        "generator": "factory/gen_pkg3d.py",
        "family": "SOIC",
        "height_mm": 1.4,
        "height_basis": "datasheet A, midpoint of min and max",
        "standoff_mm": 0.15,
        "standoff_basis": "family nominal (no datasheet A1 read)",
        "lead_width_mm": 0.36,
        "lead_width_basis": "default: 0.6 x pad width across the lead, at most 0.45 x pitch 1.27 mm; a tab 0.9 x its width (no datasheet b read)",
        "lead_thickness_mm": 0.2,
        "lead_thickness_basis": "default for pitch 1.27 mm, height 1.4 mm (no datasheet c read)"
      },
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "cs4585eo.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.4
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "eef19caeddfb18c35d0131818971b6a8f457e1993f6c4e02960c9cbbf5cb2169",
        "checked": "2026-11-13",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cs4585eo-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.4
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "deffda65d1118f7779aa0fe904c0fc84de1041eaa18665c6a6e115d5392f4638",
        "checked": "2026-11-13",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "SOP8",
      "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": 1.4,
        "range_mm": [
          1.3,
          1.5
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "cs4585eo.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}