A 48-LQFP case is used for packaging. There is a case available for the circuit clock in Tray. It is normal to operate with a value of 100MHz. As far as I can tell, it is mounted by Surface Mount. Electrical components classified as Fanout Buffer (Distribution), Multiplexer are classified as such. The temperature should be set to -40°C~85°C to ensure reliable performance. The clock switch should operate with a voltage of 2.375V~3.465VV. The output is LVCMOS, LVTTL. Basically, it belongs to the same family as the ICS8344.
8344BYILF Features
The operating temperature of -40°C~85°C degrees
8344BYILF Applications
There are a lot of Renesas Electronics America Inc. 8344BYILF Clock Buffers & Drivers applications.