General Description
The 849S625 is a high frequency clock generator. The 849S625
uses an external 25MHz crystal to synthesize 625MHz, 312.5MHz,
156.25MHz and 125MHz clocks. The 849S625 has excellent
cycle-to-cycle and RMS phase jitter performance.
The 849S625 operates at full 3.3V supply mode and is available in a
fully RoHS compliant 48-lead TQFP, E-Pad package.
Features
• Ten selectable differential LVPECL or LVDS outputs
• Output frequencies of 625MHz, 312.5MHz, 156.25MHz or
125MHz using a 25MHz crystal.
• Crystal interface designed for a 25MHz, parallel resonant crystal
• Cycle-to-cycle jitter: 25ps (maximum)
• RMS phase jitter at 156.25MHz (1MHz - 20MHz):
0.375ps (typical), LVDS outputs
• Output duty cycle: 53% (maximum)
• Full 3.3V supply mode
• -40°C to 85°C ambient operating temperature
• Available in lead-free (RoHS 6) packaging