CA-IF4888HS

{
  "schema_version": 1,
  "type": "component",
  "slug": "ca-if4888hs",
  "title": "CA-IF4888HS",
  "brief": "Chipanalog 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": [
    "component",
    "interface",
    "ca-if4888hs",
    "factory-2.0.0",
    "extractor-text"
  ],
  "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,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 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,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 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
        ]
      },
      "E1": {
        "nom_mm": 3.9,
        "range_mm": [
          3.8,
          4
        ]
      },
      "E": {
        "nom_mm": 6,
        "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"
      }
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Chipanalog",
      "Package": "SOIC-8",
      "Category": "Interface",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "cfae97ab1df304452087693c5ed0712c12ad3770bebde3e96841936fadb1906d",
      "rows": [
        {
          "name": "Supply voltage",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Bus pin voltage A,B",
          "symbol": "VIO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -30,
          "typ": null,
          "max": 30,
          "conditions": "A,B",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Logic pin voltage DI,DE,REB",
          "symbol": "VIO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7,
          "conditions": "DI,DE,REB",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "RO pin voltage (lower limit)",
          "symbol": "VIO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "RO; upper limit VCC+0.3 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "HBM ESD, bus pins",
          "symbol": "VESD",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": -30,
          "typ": null,
          "max": 30,
          "conditions": "HBM, ANSI/ESDA/JEDEC JS-001, bus pins",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "HBM ESD, other pins",
          "symbol": "VESD",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": -6,
          "typ": null,
          "max": 6,
          "conditions": "HBM, ANSI/ESDA/JEDEC JS-001, other pins",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3,
          "typ": 5,
          "max": 5.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Bus input voltage",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": -15,
          "typ": null,
          "max": 15,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Low-level input threshold",
          "symbol": "VIL",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 0.8,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level input threshold (lower limit)",
          "symbol": "VIH",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "upper limit VCC",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Differential load resistance",
          "symbol": "RL",
          "kind": "recommended_operating",
          "unit": "Ohm",
          "min": 54,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Data rate",
          "symbol": "1/tUI",
          "kind": "recommended_operating",
          "unit": "kbps",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Ambient temperature",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-ambient thermal resistance",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 115,
          "max": null,
          "conditions": "SOIC8",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-case (top) thermal resistance",
          "symbol": "RθJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 60,
          "max": null,
          "conditions": "SOIC8",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Differential output voltage",
          "symbol": "|VOD|",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": 3.5,
          "max": null,
          "conditions": "RL =60 Ω, -15 V ≤ Vtest ≤ 15 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Differential output voltage",
          "symbol": "|VOD|",
          "kind": "electrical",
          "unit": "V",
          "min": 2.1,
          "typ": null,
          "max": null,
          "conditions": "RL =60 Ω, -15 V ≤ Vtest ≤ 15 V, 4.5 V ≤ VCC ≤ 5.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Differential output voltage",
          "symbol": "|VOD|",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": 4,
          "max": null,
          "conditions": "RL = 100 Ω",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Differential output voltage",
          "symbol": "|VOD|",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": 3.7,
          "max": null,
          "conditions": "RL = 54 Ω",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Change in differential output voltage",
          "symbol": "Δ|VOD|",
          "kind": "electrical",
          "unit": "mV",
          "min": -200,
          "typ": null,
          "max": 200,
          "conditions": "RL = 54 Ω",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Common-mode output voltage",
          "symbol": "VOC",
          "kind": "electrical",
          "unit": "V",
          "min": 1,
          "typ": null,
          "max": 3,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Change in common-mode output voltage",
          "symbol": "ΔVOC(SS)",
          "kind": "electrical",
          "unit": "mV",
          "min": -200,
          "typ": null,
          "max": 200,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Short-circuit output current",
          "symbol": "IOS",
          "kind": "electrical",
          "unit": "mA",
          "min": -250,
          "typ": null,
          "max": 250,
          "conditions": "-7 V ≤ VO ≤ 12 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Bus input current",
          "symbol": "II",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 72,
          "max": 125,
          "conditions": "DE = 0 V, VCC = 0 V or 5 V, VI = 12V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Bus input current",
          "symbol": "II",
          "kind": "electrical",
          "unit": "μA",
          "min": -100,
          "typ": -43,
          "max": null,
          "conditions": "DE = 0 V, VCC = 0 V or 5 V, VI = -7V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Bus input current",
          "symbol": "II",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 91,
          "max": 125,
          "conditions": "DE = 0 V, VCC = 0 V or 5V, VI = 15V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Bus input current",
          "symbol": "II",
          "kind": "electrical",
          "unit": "μA",
          "min": -200,
          "typ": -97,
          "max": null,
          "conditions": "DE = 0 V, VCC = 0 V or 5V, VI = -15V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Positive-going input threshold voltage",
          "symbol": "VTH+",
          "kind": "electrical",
          "unit": "mV",
          "min": -100,
          "typ": null,
          "max": -20,
          "conditions": "Within common-mode range",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Negative-going input threshold voltage",
          "symbol": "VTH-",
          "kind": "electrical",
          "unit": "mV",
          "min": -200,
          "typ": null,
          "max": -130,
          "conditions": "Within common-mode range",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input hysteresis voltage",
          "symbol": "VHYS",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 30,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output low voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.2,
          "max": 0.4,
          "conditions": "IOL = 4 mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output high-impedance current",
          "symbol": "IOZR",
          "kind": "electrical",
          "unit": "μA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "VO = 0 V or VCC, REB= VCC",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Logic input current",
          "symbol": "IIN",
          "kind": "electrical",
          "unit": "μA",
          "min": -6.2,
          "typ": null,
          "max": 6.2,
          "conditions": "3 V ≤ VCC ≤ 5.5 V, 0 V ≤ VIN ≤ VCC",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply current, driver and receiver enabled",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2.4,
          "max": 3,
          "conditions": "REB=0V, DE = VCC, no load",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply current, driver enabled, receiver off",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.8,
          "max": 1.2,
          "conditions": "REB=VCC, DE = VCC, no load",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply current, driver off, receiver enabled",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 700,
          "max": 960,
          "conditions": "REB=0V, DE = 0V, no load",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply current, driver and receiver off",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 2.4,
          "max": 5,
          "conditions": "REB=VCC, DE = 0V, DI=open, no load",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Thermal shutdown temperature",
          "symbol": "TSD",
          "kind": "electrical",
          "unit": "°C",
          "min": null,
          "typ": 180,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Driver rise/fall time",
          "symbol": "tr, tf",
          "kind": "timing",
          "unit": "ns",
          "min": 250,
          "typ": 360,
          "max": 680,
          "conditions": "RL = 54 Ω, CL = 50 pF",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Driver propagation delay",
          "symbol": "tPHL, tPLH",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 280,
          "max": 500,
          "conditions": "RL = 54 Ω, CL = 50 pF",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Driver pulse skew",
          "symbol": "tSK(P)",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "|tPHL – tPLH|",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Driver disable time",
          "symbol": "tPHZ, tPLZ",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 10,
          "max": 200,
          "conditions": "RL = 54 Ω, CL = 50 pF",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Driver enable time",
          "symbol": "tPZH, tPZL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 100,
          "max": 600,
          "conditions": "REB = 0 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Driver enable time",
          "symbol": "tPZH, tPZL",
          "kind": "timing",
          "unit": "μs",
          "min": null,
          "typ": 7.2,
          "max": 11,
          "conditions": "REB = VCC",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Receiver rise/fall time",
          "symbol": "tr, tf",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 3.8,
          "max": 10,
          "conditions": "CL = 15 pF",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Receiver propagation delay",
          "symbol": "tPHL, tPLH",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 23,
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