There is a case available for the cut smart buffer in 20-TSSOP (0.173, 4.40mm Width). It is packaged as a Tube. In normal operation, 800MHz is the maximum value. As you can see, it is mounted by Surface Mount. This electronic part is classified as Fanout Buffer (Distribution), Multiplexer. Set the temperature to 0°C~70°C for reliable performance. The clock switch should operate with a voltage of 3.135V~3.465VV. The output is set to LVDS. The ICS8543 family contains it.
8543BGLF Features
The operating temperature of 0°C~70°C degrees
8543BGLF Applications
There are a lot of Renesas Electronics America Inc. 8543BGLF Clock Buffers & Drivers applications.