Texas Instruments offers its CDCM6208V2G, 2:8, ultra low power, low jitter clock generator, pin mode variant V2G

     The CDCM6208V2G of Texas Instruments is a highly versatile, low jitter, low power clock generator that can generate eight low jitter clock outputs. It is one of the two inputs of optional LVPECL like high jitter CMLs, normal jitter CMLs, LVDS like low power consumption CMLs, HCSLs, or LVCMOS. These inputs can have low-frequency crystals, or CML, LVPECL, LVDS, or LVCMOS signals, for a variety of wireless infrastructure baseband, wired data communications, computing, low-power medical imaging, and portable test and measurement applications.

     CDCM6208V2G also has an innovative distributor structure, and its four outputs can produce any frequency better than 1ppm frequency accuracy. CDCM6208V2G can be easily configured through I (2) C or SPI programming interface without serial interface. Pin mode is also available and can be set to 32 different devices using one of the control pins in a pre programmed configuration.

     In synthesizer mode, the overall performance of output jitter is less than 0.5 ps RMS (10 k 20 MHz), or the output between 20 p p (release) uses an integer divider and the output between 50 and 220 p p (10 k 40 MHz) uses a hierarchical divider according to the output frequency of the prescaler.
In jitter clearing mode, the overall output jitter is less than 2.1 ps RMS (10 k to 20 MHz), or the integer divider is used to output 40 ps p-p, while the fractional divider is used to output less than 70 ps to 240 ps p-p. The CDCM6208V2G is packaged in a small, 48 pin, 7mm x 7mm QFN package.