A clock integrated circuit is packaged in a Tube-shaped package because it is for use as a clock. The number of uPs/uCs/Peripheral IC this time clock generator incorporates is CLOCK GENERATOR, PROCESSOR SPECIFIC.
SI5351A-B06168-GT Features
SI5351A-B06168-GT Applications
There are a lot of Silicon Labs SI5351A-B06168-GT Clock Generators applications.