GENERAL DESCRIPTION

The ICS844256 is a Crystal-to-LVDS Clock Synthesizer/Fanout Buffer designed for SONET and Gigabit Ethernet applications and is a member of the HiperClockS™ family of High Performance Clock Solutions from IDT. The output frequency can be set using the frequency select pins and a 25MHz crystal for Ethernet frequencies, or a 19.44MHz crystal for SONET. The low phase noise characteristics of the ICS844256 make it an ideal clock for these demanding applications.

FEATURES

• Six LVDS outputs

• Crystal oscillator interface

• Output frequency range: 62.5MHz to 622.08MHz

• Crystal input frequency range: 15.625MHz to 25.5MHz

• RMS phase jitter at 125MHz, using a 25MHz crystal (1.875MHz to 20MHz): 0.48ps (typical)

• Full 3.3V or 3.3V core, 2.5V output supply mode

• 0°C to 70°C ambient operating temperature

• Available in both standard (RoHS 5) and lead-free (RoHS 6) packages