CA-IF4888HS

{
  "slug": "ca-if4888hs",
  "version": "0.1.0",
  "type": "component",
  "description": "Chipanalog RS-485/RS-422 ICs, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface",
    "ca-if4888hs",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ca-if4888hs.kicad_sym",
    "ca-if4888hs.kicad_mod",
    "ca-if4888hs.glb",
    "ca-if4888hs.step",
    "ca-if4888hs.lbr",
    "docs/hero.png",
    "docs/ca-if4888hs-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ca-if4888hs-hero.glb",
    "ca-if4888hs-hero.overlay.json",
    "ca-if4888hs-etched.glb"
  ],
  "component": {
    "mpn": "CA-IF4888HS",
    "manufacturer": "Chipanalog",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485/RS-422 ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/e7f09a8ffa53fff6b799a8ed4fd1cb39.pdf",
    "parts": {
      "symbol": "ca-if4888hs.kicad_sym",
      "footprint": "ca-if4888hs.kicad_mod",
      "model_3d": "ca-if4888hs-hero.glb",
      "model_3d_plain": "ca-if4888hs-etched.glb",
      "model_3d_step": "ca-if4888hs-etched.step",
      "model_3d_step_plain": "ca-if4888hs.step",
      "lbr": "ca-if4888hs.lbr"
    },
    "distributor_links": {
      "lcsc": "C7422558"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T12:02:40Z",
      "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 data output (digital output); high-impedance when REB is high, with output swing VOH ≥ VCC-0.4 V at IOH = -4 mA and VOL ≤ 0.4 V at IOL = 4 mA."
      },
      {
        "number": "2",
        "name": "REB",
        "type": "input",
        "description": "Receiver enable input, active low; REB low enables the receiver, REB high or open puts RO in high impedance."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver enable input, active high; has an internal pull-down so the driver is disabled (high-impedance) when open."
      },
      {
        "number": "4",
        "name": "DI",
        "type": "input",
        "description": "Driver data input; has an internal pull-up to VCC so A is high and B low when floating with the driver enabled."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "6",
        "name": "A",
        "type": "bidirectional",
        "description": "Driver output / receiver input A on the RS-485 bus, with ±30 kV HBM ESD, ±15 V common-mode range and ±30 V fault protection."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "Driver output / receiver input B on the RS-485 bus, with ±30 kV HBM ESD, ±15 V common-mode range and ±30 V fault protection."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply, 3 V to 5.5 V recommended operating range (absolute maximum 7.0 V)."
      }
    ],
    "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 pin table labels A and B type as 'bus input' (总线输入) though they are bidirectional driver o"
        ],
        "pages_sent": 16,
        "cost_usd": 0.0983,
        "at": "2026-10-30T12:02:26"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/e7f09a8ffa53fff6b799a8ed4fd1cb39.pdf",
        "pages": 16,
        "sha256": "cfae97ab1df30445",
        "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": "ca-if4888hs.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": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ca-if4888hs-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": "efc74bee3453c2f38d95356cc2224767973696c217a606b21d23adb65a04bdd7",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "SOIC8",
      "source_page": 13,
      "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": "ca-if4888hs.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}