• 7 Single-ended LVCMOS Outputs:

-   One Single-ended LVCMOS 33.33MHz CPU Clock

-   Six Single-ended LVCMOS Outputs from the Reference Clock 

• 3 LVPECL Differential Output Pairs, 1 pair 156.25MHz, 2 pairs selectable 100MHz and 125MHz 
• Selectable Input Source: External Crystal or external Single-ended Input Source
• 25MHz Crystal Oscillator Reference
• RMS Phase Jitter 0.127ps(Typical)@ 156.25MHz, Reference 25MHz Crystal (12kHz~20MHz)
• Power Supply Noise Rejection PSRR: -90dBc
• 3.3V Power Supply Voltage
• Ambient Operating Temperature: -40°C to 85°C
• Package: QFN6x6-40

The SY25221 is an analog PLL for Ethernet and processor applications. The SY25221 will provide <0.15ps RMS phase jitter performance @ 156.25MHz and synthesize output 100MHz, 125MHz, 156.25MHz and a 33.33MHz CPU clock from a single device. Six LVCMOS outputs also serve as additional buffering of the 25MHz crystal reference; 3 differential output support LVPECL format.