GENERAL DESCRIPTION
The 843246I is a Crystal-to-3.3V LVPECL Clock Synthesizer/Fanout
Buffer designed for Fibre Channel and Gigabit Ethernet applications
and is a member of the 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 26.5625MHz
crystal for a Fibre Channel. The low phase noise characteristics of
the 843246I make it an ideal clock for these demanding applications.

FEATURES
• Six LVPECL outputs
• Crystal oscillator interface
• VCO range: 490MHz to 680MHz
• Crystal input frequency range: 25MHz to 33.333MHz
• RMS phase jitter at 125MHz, using a 25MHz crystal
(1.875MHz to 20MHz): 0.41ps (typical)
• Full 3.3V or 3.3V core, 2.5V output supply mode
Core/Output
3.3V/3.3V
3.3V/2.5V
• -40°C to 85°C ambient operating temperature
• Available in lead-free (RoHS 6) package