component
XR21B1411IL16-F
Public Made by Adomby adom
MaxLinear USB ICs, QFN-16-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "xr21b1411il16-f",
"version": "0.1.0",
"type": "component",
"description": "MaxLinear USB ICs, QFN-16-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"interface ics",
"xr21b1411il16-f",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"xr21b1411il16-f.kicad_sym",
"xr21b1411il16-f.kicad_mod",
"xr21b1411il16-f.glb",
"xr21b1411il16-f.step",
"xr21b1411il16-f.lbr",
"docs/hero.png",
"docs/xr21b1411il16-f-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"xr21b1411il16-f-hero.glb",
"xr21b1411il16-f-hero.overlay.json",
"xr21b1411il16-f-etched.glb"
],
"component": {
"mpn": "XR21B1411IL16-F",
"manufacturer": "MaxLinear",
"package": "QFN-16-EP(3x3)",
"pin_count": 17,
"category": "Interface ICs",
"subcategory": "USB ICs",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/65880583bfc2a5ef92da7a920f3beecb.pdf",
"parts": {
"symbol": "xr21b1411il16-f.kicad_sym",
"footprint": "xr21b1411il16-f.kicad_mod",
"model_3d": "xr21b1411il16-f-hero.glb",
"model_3d_plain": "xr21b1411il16-f-etched.glb",
"model_3d_step": "xr21b1411il16-f-etched.step",
"model_3d_step_plain": "xr21b1411il16-f.step",
"lbr": "xr21b1411il16-f.lbr"
},
"distributor_links": {
"lcsc": "C1521587",
"digikey": "1016-1388-ND",
"mouser": "701-XR21B1411IL16-F"
},
"distributor_check": {
"checked_at": "2026-10-30T22:48:55Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "1016-1388-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "701-XR21B1411IL16-F",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "LOWPOWER",
"type": "output",
"description": "Asserted whenever it is not safe to draw the current requested in the Device Maximum Power field from VBUS; the default polarity is active low and may be changed via OTP, and high-power applications tie it to VIO_REF or GND through a weak 10K resistor to match the asserted state."
},
{
"number": "2",
"name": "NC",
"type": "unconnected",
"description": "No connect pin."
},
{
"number": "3",
"name": "GPIO5/RTS#/RS485",
"type": "bidirectional",
"description": "General-purpose I/O, or RTS# output (active low) for hardware flow control, or auto RS-485 half-duplex control; it has an OTP-programmable pull-up or pull-down and its state is undefined during USB bus reset and POR, so a weak external resistor is needed for a defined state."
},
{
"number": "4",
"name": "GPIO4/CTS#",
"type": "bidirectional",
"description": "General-purpose I/O or UART Clear-to-Send input (active low) for hardware flow control, with an OTP-programmable pull-up or pull-down; its state is undefined during USB bus reset and POR."
},
{
"number": "5",
"name": "GPIO3/DTR#",
"type": "bidirectional",
"description": "General-purpose I/O or UART Data-Terminal-Ready output (active low), with an OTP-programmable pull-up or pull-down; it is automatically configured as an output when using the standard CDC-ACM driver."
},
{
"number": "6",
"name": "GPIO2/DSR#",
"type": "bidirectional",
"description": "General-purpose I/O or UART Data-Set-Ready input (active low) for DTR/DSR hardware flow control, with an OTP-programmable pull-up or pull-down."
},
{
"number": "7",
"name": "GPIO1/CD#",
"type": "bidirectional",
"description": "General-purpose I/O or UART Carrier-Detect input (active low), with an OTP-programmable pull-up or pull-down."
},
{
"number": "8",
"name": "GPIO0/RI#/RWK#",
"type": "bidirectional",
"description": "General-purpose I/O, UART Ring-Indicator input (active low), or Remote Wakeup input used to signal the USB host to exit Suspend, with an OTP-programmable pull-up or pull-down."
},
{
"number": "9",
"name": "TX",
"type": "output",
"description": "UART Transmit Data output."
},
{
"number": "10",
"name": "RX",
"type": "input",
"description": "UART Receive Data input with an OTP-programmable pull-up or pull-down; the pull-up is disabled without a valid voltage on VIO_REF."
},
{
"number": "11",
"name": "VBUS_SENSE",
"type": "input",
"description": "VBUS sense input that disables the USBD+ pull-up when VBUS is absent in self-powered mode; it must be fed through a divider so VBUS_SENSE = VIO_REF with VBUS = 5V, must be enabled via OTP, and must be tied to a defined logic state in bus-powered mode."
},
{
"number": "12",
"name": "VIO_REF",
"type": "power_in",
"description": "Reference voltage for the modem I/O signals, with a voltage range of +1.6 V to +3.6 V."
},
{
"number": "13",
"name": "GND",
"type": "power_in",
"description": "Power supply common ground."
},
{
"number": "14",
"name": "USBD-",
"type": "bidirectional",
"description": "USB port differential data negative signal, with ±15 kV HBM ESD protection."
},
{
"number": "15",
"name": "USBD+",
"type": "bidirectional",
"description": "USB port differential data positive signal with an internal USB 2.0-compliant pull-up resistor and ±15 kV HBM ESD protection."
},
{
"number": "16",
"name": "VCC",
"type": "power_in",
"description": "5 V power supply with an input voltage range of +4.4 V to +5.25 V."
},
{
"number": "17",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-haiku-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The GND center pad (exposed thermal pad on the QFN underside) is listed in the datasheet as a pin ty; The datasheet pin table gives the 16-QFN pin numbers and the pinout diagram, but the types for the G",
"exposed pad 17 added from the footprint"
],
"pages_sent": 9,
"cost_usd": 0.0522,
"at": "2026-10-30T22:48:35"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/65880583bfc2a5ef92da7a920f3beecb.pdf",
"pages": 31,
"sha256": "2348f9f0dde10db6",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 17,
"described": 17,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "xr21b1411il16-f.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
3.0,
3.0,
0.785
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "3eb81ffac423a66cdcfead8efe56401da171edaf1f2257049aad7b2d3900f6c8",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "xr21b1411il16-f-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
3.0,
3.0,
0.785
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "5f1333f9280844f21d08d4d45d47e14d21120fa6ffd6c114fa306d1860e2978f",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
],
"package_dims": {
"package_code": "16-pin QFN 3x3x0.9 mm (POD-00000138)",
"source_page": 29,
"D": {
"nom_mm": 3.0,
"range_mm": [
null,
null
]
},
"E1": {
"nom_mm": 3.0,
"range_mm": [
null,
null
]
},
"A": {
"nom_mm": 0.9,
"range_mm": [
null,
null
]
},
"source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
"model_check": {
"file": "xr21b1411il16-f.step",
"verdict": "PASS",
"reasons": [
"height within the datasheet's package drawing"
],
"by": "factory/package_fit.py"
}
}
}
}