IDT's 8V49NS0412, 8V49NS0312, and 8V41NS0412 are clock generators with four output dividers: three integers and one that is either integer or fractional. When used with an external crystal, they generate high-performance timing for the communications and datacom markets, especially for applications that demand extremely low phase noise.

They provide versatile frequency configurations and output formats, and are optimized to deliver excellent phase noise performance. The devices deliver an optimum combination of high clock frequency and low phase noise performance, combined with high power supply noise rejection.

They also support two types of output levels: LVPECL or LVDS on eleven of its outputs. In addition, they have a single LVCMOS output that can provide a generated clock, or act as a reference bypass output.

The devices can be configured to deliver specific output configurations under pin control only or additional configurations through an I²C serial interface.