XR21B1422IL40TR-F Overview
There is a package called 40-VFQFN Exposed Pad that contains it, and you can find it there. It is very easy to carry because of the Tape & Reel (TR)-shaped packaging. Regulating the temperature to -40°C~85°C is crucial to ensuring reliable operation. With a 3V~5.25VV power source, you should be able to use it. There is currently a supply of 15mA in the market.
XR21B1422IL40TR-F Features

XR21B1422IL40TR-F Applications
There are a lot of MaxLinear, Inc.
XR21B1422IL40TR-F Controllers Interface ICs applications.

Smart LED Lighting
Portable Appliances
Battery-Operated Devices
Cellular Data Devices
Factory Automation and Process Controls
IrDA transmission control
Remote transmission formatter
Docking
Mobile Monitors
Multi-Function Monitors

Package / Case	40-VFQFN Exposed Pad
Operating Temperature	-40°C~85°C
Packaging	Tape & Reel (TR)
Part Status	Obsolete
Moisture Sensitivity Level (MSL)	3 (168 Hours)
Voltage - Supply	3V~5.25V
Function	Bridge, USB to UART
Interface	UART
Current - Supply	15mA
Protocol	USB
Standards	USB 2.0