There is a case of SOIC in which it is packaged. It is recommended that the maximum value for normal operation is 350MHz. In this case, it is placed in the way of Surface Mount. Temperatures below -40°C are required to keep it reliable. Temperatures below 85°C allow stable operation.
ICS830S21AMI-01LF Features
ICS830S21AMI-01LF Applications
There are a lot of Integrated Device Technology (IDT) ICS830S21AMI-01LF Clock Buffers & Drivers applications.