component

XR21B1411IL16-F

Public Made by Adom

by adom

MaxLinear USB ICs, QFN-16-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentinterface icsxr21b1411il16-ffactory-2.0.0extractor-text

Changed since verified XR21B1411IL16-F

by Ray · last 30 Oct 2026 · 1 record · files changed since
SymbolFootprint3D modelPins

Verification log 1 record

30 Oct 2026RayPublished by the parts factory: tier mfr, 17 pinschanged since
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: XR21B1411IL16-F · QFN-16-EP(3x3) · 17 pins
  • ✓copper: 17 copper pads, none touching another net
  • ✓datasheet: all 17 pin names found in the 31-page datasheet
  • ✓distributor: lcsc C1521587, digikey 1016-1388-ND, mouser 701-XR21B1411IL16-F
  • ✓family: QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-zy5igusx/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: height within the datasheet's package drawing (datasheet p.29)
  • ✓pads: 17 pins = 17 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 17 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files! xr21b1411il16-f.kicad_sym✓ xr21b1411il16-f.kicad_mod✓ xr21b1411il16-f.step
Spot something wrong? Report it as an issue Propose a fix Records are signed by members of adom.
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 10d ago
viewers xr21b1411il16-f: symbol viewer · Ray 5d ago
package.json Publish 0.1.0 · Ray 10d ago
page.json Set visibility: public · Ray 10d ago
README.md Publish 0.1.0 · Ray 10d ago
verification.json Verified: Published by the parts factory: tier mfr, 17 pins · Ray 10d ago
xr21b1411il16-f-etched.glb Publish 0.1.0 · Ray 10d ago
xr21b1411il16-f-etched.step xr21b1411il16-f: factory component page (tier=mfr) · Ray 10d ago
xr21b1411il16-f-hero.glb xr21b1411il16-f: hero GLB from the etched model (keeps the MPN mark) · Ray 10d ago
xr21b1411il16-f-hero.overlay.json Publish 0.1.0 · Ray 10d ago
xr21b1411il16-f.glb Publish 0.1.0 · Ray 10d ago
xr21b1411il16-f.kicad_mod Publish 0.1.0 · Ray 10d ago
xr21b1411il16-f.kicad_sym xr21b1411il16-f: symbol repaired (body fitted to the names) · Ray 5d ago
xr21b1411il16-f.lbr xr21b1411il16-f: symbol repaired (body fitted to the names) · Ray 5d ago
xr21b1411il16-f.step Publish 0.1.0 · Ray 10d ago

XR21B1411IL16-F

MaxLinear · USB ICs · QFN-16-EP(3x3)

XR21B1411IL16-F from MaxLinear, in a QFN-16-EP(3x3). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 LOWPOWER output 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.
2 NC unconnected No connect pin.
3 GPIO5/RTS#/RS485 bidirectional 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.
4 GPIO4/CTS# bidirectional 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.
5 GPIO3/DTR# bidirectional 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.
6 GPIO2/DSR# bidirectional 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.
7 GPIO1/CD# bidirectional General-purpose I/O or UART Carrier-Detect input (active low), with an OTP-programmable pull-up or pull-down.
8 GPIO0/RI#/RWK# bidirectional 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.
9 TX output UART Transmit Data output.
10 RX input 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.
11 VBUS_SENSE input 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.
12 VIO_REF power_in Reference voltage for the modem I/O signals, with a voltage range of +1.6 V to +3.6 V.
13 GND power_in Power supply common ground.
14 USBD- bidirectional USB port differential data negative signal, with ±15 kV HBM ESD protection.
15 USBD+ bidirectional USB port differential data positive signal with an internal USB 2.0-compliant pull-up resistor and ±15 kV HBM ESD protection.
16 VCC power_in 5 V power supply with an input voltage range of +4.4 V to +5.25 V.
17 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer MaxLinear
Package QFN-16-EP(3x3)
Category Interface ICs
Pins 17

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Power Supply Current ICC 6.75 7.25 mA 6MHz internal clock 27
Power Supply Current ICC 7.5 8 mA 12MHz internal clock 27
Power Supply Current ICC 8.5 9 mA 24MHz internal clock 27
Power Supply Current ICC 10.5 12 mA 48MHz internal clock 27
Suspend mode Current ISusp 1 1.25 mA 27
Input Low Voltage (UART/GPIO) VIL -0.3 V 27
Input Low Voltage (UART/GPIO), upper limit VIL 0.25 x VIO_REF Printed as 0.25 * VIO_REF; VIO_REF = 1.6V - 3.6V 27
Input High Voltage (UART/GPIO), lower limit VIH 0.7 x VIO_REF Printed as 0.70 * VIO_REF; VIO_REF = 1.6V - 3.6V 27
Output Low Voltage (UART/GPIO) VOL 0.3 V IOL = 1 mA, VIO_REF = 1.6V 27
Output Low Voltage (UART/GPIO) VOL 0.5 V IOL = 4 mA, VIO_REF = 3.6V 27
Output High Voltage (UART/GPIO) VOH 1.3 V IOH = -400 uA, VIO_REF = 1.6V 27
Output High Voltage (UART/GPIO) VOH 2.8 V IOH = -1.5 mA, VIO_REF = 3.6V 27
Input Low Leakage Current IIL -10 10 uA 27
Input High Leakage Current IIH -10 10 uA 27
Input Pin Capacitance CIN 5 pF 27
Input Low Voltage (USB I/O) VIL -0.3 0.8 V VCC 4.4V - 5.25V, TA -40 to +85C 28
Input High Voltage (USB I/O) VIH 2 5.25 V VCC 4.4V - 5.25V, TA -40 to +85C 28
Output Low Voltage (USB I/O) VOL 0 0.3 V External 1.5 K Ohm to 3.6V on USBD- pin 28
Output High Voltage (USB I/O) VOH 2.8 3.6 V External 15 K Ohm to GND on USBD- pin 28
Driver Output Impedance VDrvZ 28 44 Ω 28
Open short current IOSC 38.5 mA 1.5 V on USBD+ and USBD- 28
Vcc Supply Voltage VCC 5.75 V 27
Input Voltage (all pins except USBD+ and USBD-) VIN -0.3 5.5 V 27
Input Voltage (USBD+ and USBD-) VIN -0.3 5.75 V 27
Junction Temperature TJ 125 °C 27
Supply Voltage VCC 4.4 5.25 V Unless otherwise noted, TA = -40 to +85C 27
Reference Voltage (VIO_REF) VIO_REF 1.6 3.6 V Used for UART/GPIO pins 27
Operating Temperature Range TA -40 85 °C Ordering part XR21B1411IL16-F 2
Thermal resistance, junction to ambient θJA 36.4 °C/W QFN16 3x3; typical value 29
Thermal resistance, junction to case θJC 17.8 °C/W QFN16 3x3; typical value 29

CAD (KiCad official)

  • Symbol: XR21B1411IL16-F
  • Footprint: Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm
  • 3D model: QFN-16-EP(3x3) (KiCad packages3D, STEP)
  • 3D model files: xr21b1411il16-f-etched.step / xr21b1411il16-f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); xr21b1411il16-f.step / xr21b1411il16-f.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: MaxLinear datasheet (31 pp, sha256 2348f9f0dde10db6, retrieved 2026-10-30, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF