NBXSBA021 Datasheet, ON Semiconductor

http://onsemi.com 6 PIN CLCC LN SUFFIX CASE 848AB
*ăLVPECL Differential Output
*ăUses High Q Fundamental Mode Crystal and PLL Multiplier
*ăUltra Low Jitter .

The device uses a high Q fundamental crystal and Phase Lock Loop (PLL) multiplier to provide 266.667 MHz, ultra low jit.