The Flex series is one family of the ClockWorks™ portfolio. It uses integer PLLs to synthesize a low frequency reference input to high frequency clock outputs. The differential output is up to 840MHz and single ended output is up to 250MHz. Output types are LVCMOS, LVPECL, LVDS and HCSL or any of the combinations. The family is available in several different package options, depending on the included features.