The RS1490D XO is a SMD Clock Oscillator Series that operates from 10 to 180 MHz. This Discrete XO offers ultra low RMS phase jitter; phase noise and high frequency stability in an industry standard 14 x 9 mm SMD package. It has LVPECL and HCMOS outputs. It is ideal for base station, communication, DSL/ADSL, IP timing and a number of other applications.