It's a electronic part of the 20-SSOP (0.209, 5.30mm Width) package. Tape & Reel (TR) is the form in which it is packaged. As far as I can tell, it is mounted by Surface Mount. This electronic component falls under the classification of Fanout Buffer (Distribution). If you wish to ensure reliable performance, you should set the temperature to 0°C~70°C. The clock switch should operate with a voltage of 4.75V~5.25VV. The output is set to CMOS, LVTTL. Basically, it belongs to the same family as the IDT49FCT806. A electronic part of this series belongs to the 49FCT family.
49FCT806PYG8 Features
The operating temperature of 0°C~70°C degrees
49FCT806PYG8 Applications
There are a lot of Renesas Electronics America Inc. 49FCT806PYG8 Clock Buffers & Drivers applications.