A clock integrated circuit is packaged in a Tray-shaped package because it is for use as a clock. Featuring hitless switching, holdover, and jittering, this is a TELECOM CIRCUIT telecom clock PLL.
SI5383A-D10188-GM Features
SI5383A-D10188-GM Applications
There are a lot of Silicon Labs SI5383A-D10188-GM Clock Generators applications.