signal transfer in different clock domains

Hello,

basically, you won't find a FF with a separate synchronous clear or set input, cause it's function couldn't distinguished from D input operation. With conventional digital logic devices (74LS, 74HC, 4000er series, whatever), you will find synchronous set/reset only with more complex circuits, e.g. counters or shift registers. Logic devices datasheets could be also a source of information besides electronic textbooks.

A useful internet resource is lessons in electric circuits, volume iv - digital

www.ibiblio.org/obp/electriccircuits

Regards,

Frank