It is packaged using the Tape & Reel (TR) method since it is a clock IC. Frequency generator is capable of operating at a maximum temperature of 260 when reflowing. RF synthesizer is comprised of CLOCK GENERATOR, PROCESSOR SPECIFIC uPs, uCs, and peripheral ICs.
SI5355A-B02621-GMR Features
SI5355A-B02621-GMR Applications
There are a lot of Silicon Labs SI5355A-B02621-GMR Clock Generators applications.