component
CA-IF4288
Public Made by Adomby adom
Chipanalog Buffer/Driver/Transceiver, QFN-24(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "ca-if4288",
"version": "0.1.0",
"type": "component",
"description": "Chipanalog Buffer/Driver/Transceiver, QFN-24(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"logic",
"ca-if4288",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
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"path": "docs/hero.png"
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"ca-if4288.step",
"ca-if4288.lbr",
"docs/hero.png",
"docs/ca-if4288-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
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"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",
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"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": {
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"footprint": "viewers/footprint.html"
},
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"units": "mm",
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"seat": "z = 0",
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"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"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",
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}
}