The CSPT857 is a PLL based clock driver that acts as a zero delay buffer to distribute one differential clock input pair(CLK, CLK ) to 10 differential output pairs (Y [0:9], Y [0:9]) and one differential pair of feedback clock output (FBOUT, FBOUT). External feedback pins (FBIN, FBIN) for synchronization of the outputs to the input reference is provided. A CMOS Enable/Disable pin is available for low power disable. When the output frequency falls below approximately 20MHz, the device will enter power down mode. In this mode, the receivers are disabled, the PLL is turned off, and the output clock drivers are tristated, resulting in a current consumption device of less than 200A. The CSPT857 requires no external components and has been optimised for very low I/O phase error, skew, and jitter, while maintaining frequency and duty cycle over the operating voltage and temperature range. The CSPT857, designed for use in both module assemblies and system motherboard based solutions, provides an optimum high-performance clock source. The CSPT857 is only available in Industrial Temperature Range (-40C to +85C), and CSPT857A is only available in Commercial Temperature Range (0C to +70C). See Ordering Information for details.