DESCRIPTION
The SY89424V is a low-power Phase Locked Loop (PLL) based frequency synthesizer. The device is capable of generating up to 1GHz clock frequencies with a low-cost 10–25MHz external series-resonant quartz crystal. One can also use PECL differential clock signals to drive this device instead of the quartz crystal.

FEATURES
■ 3.3V and 5V power supply options
■ Up to 1GHz clock frequencies
■ Internal quartz reference oscillator driven by quartz crystal or PECL source
■ Low jitter PLL design
■ On-chip 20 ohm driver
■ Differential outputs with 600mV (min) swing
■ Optional pull-down resistors for AC-coupled outputs
■ Low power consumption
■ External loop filter optimizes performance/cost
■ Available in 16-pin SOIC package