CA-IF4288

{
  "schema_version": 1,
  "type": "component",
  "slug": "ca-if4288",
  "title": "CA-IF4288",
  "brief": "Chipanalog Buffer/Driver/Transceiver, QFN-24(4x4). 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",
    "ca-if4288",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "CA-IF4288",
    "manufacturer": "Chipanalog",
    "package": "QFN-24(4x4)",
    "pin_count": 25,
    "category": "Logic",
    "subcategory": "Buffer/Driver/Transceiver",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/2d9a81d5a09f644ebf47e1cb924d65f0.pdf",
    "parts": {
      "symbol": "ca-if4288.kicad_sym",
      "footprint": "ca-if4288.kicad_mod",
      "model_3d": "ca-if4288-hero.glb",
      "model_3d_plain": "ca-if4288-etched.glb",
      "model_3d_step": "ca-if4288-etched.step",
      "model_3d_step_plain": "ca-if4288.step",
      "lbr": "ca-if4288.lbr"
    },
    "distributor_links": {
      "lcsc": "C7422596"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T09:12:17Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "DOUT",
        "type": "output",
        "description": "Open-drain data output, connect a pull-up resistor to the logic supply."
      },
      {
        "number": "2",
        "name": "DIN",
        "type": "input",
        "description": "Data input; a high-to-low transition reverses AIO/BIO polarity and low-to-high puts them in high impedance."
      },
      {
        "number": "3",
        "name": "RST",
        "type": "input",
        "description": "Bus reset control input; low enables the transmitter to AIO/BIO, high disables it and opens the internal termination switch."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "5",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "6",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "7",
        "name": "BIO",
        "type": "bidirectional",
        "description": "Home bus data input/output; in 57.6kbps applications it connects to the home bus through a 1uF capacitor in series with a 4.7 ohm resistor."
      },
      {
        "number": "8",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "9",
        "name": "GND",
        "type": "power_in",
        "description": "Reference ground."
      },
      {
        "number": "10",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "11",
        "name": "AIO",
        "type": "bidirectional",
        "description": "Home bus data input/output; in 57.6kbps applications it connects to the home bus through a 1uF capacitor in series with a 4.7 ohm resistor."
      },
      {
        "number": "12",
        "name": "TERM",
        "type": "output",
        "description": "Switchable bus termination; a resistor between TERM and BIO sets the cable termination impedance match."
      },
      {
        "number": "13",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "14",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "15",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "16",
        "name": "GND",
        "type": "power_in",
        "description": "Reference ground."
      },
      {
        "number": "17",
        "name": "VCC",
        "type": "power_in",
        "description": "Chip power supply input, 4.5V to 5.5V recommended."
      },
      {
        "number": "18",
        "name": "VCC",
        "type": "power_in",
        "description": "Chip power supply input, 4.5V to 5.5V recommended."
      },
      {
        "number": "19",
        "name": "WT_ENb",
        "type": "input",
        "description": "Active-low enable of the DIN low-level timeout protection, with internal 180 kohm pull-down so it is enabled by default when floating."
      },
      {
        "number": "20",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection on CA-IF4288 (this pin is HPEN on CA-IF4289)."
      },
      {
        "number": "21",
        "name": "TVL",
        "type": "input",
        "description": "Leading-edge data threshold input that sets the receiver leading-edge threshold voltage."
      },
      {
        "number": "22",
        "name": "TVT",
        "type": "input",
        "description": "Trailing-edge data threshold input that sets the receiver trailing-edge threshold voltage."
      },
      {
        "number": "23",
        "name": "SRA",
        "type": "input",
        "description": "Slew rate adjust input; a resistor to GND (recommended 33 kohm, 20 kohm to 120 kohm range) sets the AIO/BIO transmit edge slope."
      },
      {
        "number": "24",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection on CA-IF4288 (this pin is DTA on CA-IF4289)."
      },
      {
        "number": "25",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad, connect to GND."
      }
    ],
    "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: The exposed pad has no pin number in the datasheet; '25' is an assumed designator for EP. Verify it ; The pin 24 description in the table is truncated. NC for CA-IF4288 is inferred from the pin diagram ; The datasheet gives TERM as an output type. Its function is a switchable connection to AIO, so a pas"
        ],
        "pages_sent": 20,
        "cost_usd": 0.1561,
        "at": "2026-10-23T09:11:59"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/2d9a81d5a09f644ebf47e1cb924d65f0.pdf",
        "pages": 20,
        "sha256": "fd4e29ca379c5af9",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 25,
        "described": 25,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ca-if4288.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4,
          4,
          0.77
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "096fc110543e6d324c5120c2d38e3dca87a389da9b6fac234f1fe40856295ef4",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ca-if4288-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4,
          4,
          0.77
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "ded466ce503cc99fe1cd89907ffcf34c235ada84bbb65dc82ade2d7e42bb6fce",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Chipanalog",
      "Package": "QFN-24(4x4)",
      "Category": "Logic",
      "Pins": "25"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "fd4e29ca379c5af9e3a72f0d78e7b100ff379be31ac516c13e02133db35863b2",
      "rows": [
        {
          "name": "Supply voltage to GND",
          "symbol": "Vcc",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "Vcc to GND",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "AIO,BIO,TERM,SRA to GND",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "max printed as Vcc+0.3",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "HP, HN to GND",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 28,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "HP to HN differential",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -28,
          "typ": null,
          "max": 28,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "VCC,AIO,BIO,TERM continuous current",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -100,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Other pins continuous current",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -50,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Normal operating temperature range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 105,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Soldering temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "ESD HBM all pins",
          "symbol": "ESD-HBM",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": -6,
          "typ": null,
          "max": 6,
          "conditions": "ANSI/ESDA/JEDEC JS-001, all pins",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "ESD HBM AIO,BIO to GND",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": -30,
          "typ": null,
          "max": 30,
          "conditions": "JS-001, AIO,BIO to GND",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "ESD CDM all pins",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": -2,
          "typ": null,
          "max": 2,
          "conditions": "ANSI/ESDA/JEDEC JS-002",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "IEC 61000-4-2 air discharge",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": -15,
          "typ": null,
          "max": 15,
          "conditions": "AIO,BIO,TERM to GND",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "IEC 61000-4-2 contact discharge",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": -8,
          "typ": null,
          "max": 8,
          "conditions": "AIO,BIO,TERM to GND",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.5,
          "typ": 5,
          "max": 5.5,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Ambient temperature",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": 25,
          "max": 105,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-ambient thermal resistance",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 52,
          "max": null,
          "conditions": "QFN",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage",
          "symbol": "Vcc",
          "kind": "electrical",
          "unit": "V",
          "min": 4.5,
          "typ": 5,
          "max": 5.5,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Supply current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1.7,
          "max": 2.5,
          "conditions": "VCC=5.0V, no load, 57.6kbps, CL=0pF",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "UVLO voltage",
          "symbol": "VUV",
          "kind": "electrical",
          "unit": "V",
          "min": 4,
          "typ": 4.2,
          "max": 4.4,
          "conditions": "Vcc rising",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "UVLO hysteresis",
          "symbol": "VUV_hys",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Output low level",
          "symbol": "VTOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.6,
          "conditions": "AIO,BIO to GND, Iload=45mA to Vcc",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Termination switch on-resistance",
          "symbol": "RTERM",
          "kind": "electrical",
          "unit": "Ω",
          "min": 2.5,
          "typ": 5,
          "max": 10,
          "conditions": "TERM to AIO",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "AIO,BIO transmit input resistance",
          "symbol": "RIN",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 7,
          "typ": 10,
          "max": 13,
          "conditions": "AIO,BIO floating, DIN=Vcc",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Bias voltage matching ratio",
          "symbol": "VAIO/VBIO",
          "kind": "electrical",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "AIO,BIO floating",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Receiver leading edge threshold",
          "symbol": "VLEAD",
          "kind": "electrical",
          "unit": "V",
          "min": 0.85,
          "typ": 1,
          "max": 1.15,
          "conditions": "VTVL = 1.0V, HPEN = Vcc",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Receiver trailing edge threshold",
          "symbol": "VTRAIL",
          "kind": "electrical",
          "unit": "V",
          "min": 0.35,
          "typ": 0.5,
          "max": 0.65,
          "conditions": "VTVT = 0.5V, HPEN =Vcc",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Internal high threshold",
          "symbol": "VTVL",
          "kind": "electrical",
          "unit": "V",
          "min": 1.8,
          "typ": 2,
          "max": 2.2,
          "conditions": "EN_VT=high",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Internal low threshold",
          "symbol": "VTVT",
          "kind": "electrical",
          "unit": "V",
          "min": 1.3,
          "typ": 1.5,
          "max": 1.7,
          "conditions": "EN_VT=high",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "TVL,TVT input leakage current",
          "symbol": "ITHLEAK",
          "kind": "electrical",
          "unit": "μA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "VTVL = VTVT = 2.5V",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Input logic high level",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 1.4,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Input logic low level",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Input leakage current",
          "symbol": "ILEAK",
          "kind": "electrical",
          "unit": "μA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Open-drain logic low level",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "ISINK=2mA",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Open-drain leakage current",
          "symbol": "VODL",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "Vout=5V, output not pulled low",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Transmit output symmetry",
          "symbol": "tSYM",
          "kind": "timing",
          "unit": "μs",
          "min": -0.4,
          "typ": 0,
          "max": 0.4,
          "conditions": "RSRA=62kΩ, RLOAD=200Ω",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "Termination on time",
          "symbol": "tTRMON",
          "kind": "timing",
          "unit": "μs",
          "min": 19,
          "typ": 34,
          "max": 63,
          "conditions": "RSRA=62kΩ, RLOAD=200Ω",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "Minimum termination on time",
          "symbol": "tTRMON_min",
          "kind": "timing",
          "unit": "μs",
          "min": 8,
          "typ": 10,
          "max": 12,
          "conditions": "RSRA=62kΩ, RLOAD=200Ω, DTA connect 10kΩ resistor",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "Maximum termination on time",
          "symbol": "tTRMON_max",
          "kind": "timing",
          "unit": "μs",
          "min": 400,
          "typ": 500,
          "max": 600,
          "conditions": "RSRA=62kΩ, RLOAD=200Ω, DTA connect 500kΩ resistor",
          "source_page": 10,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ca-if4288"
  ],
  "discovery_pitch": "CA-IF4288 (Chipanalog) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ca-if4288.kicad_sym",
    "ca-if4288.kicad_mod",
    "ca-if4288.glb",
    "ca-if4288.step",
    "ca-if4288.lbr",
    "docs/hero.png",
    "docs/ca-if4288-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ca-if4288-hero.glb",
    "ca-if4288-hero.overlay.json",
    "ca-if4288-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}