The Renesas Electronics 553S is a low skew, single input to four output, clock buffer. The 553S has best in class additive phase Jitter of sub 50 fsec. IDT makes many non-PLL and PLL based low skew output devices as well as Zero Delay Buffers to synchronize clocks.

Low additive phase jitter RMS: 50fs
Extremely low skew outputs (50ps)
Low cost clock buffer
Packaged in 8-SOIC and small 8-DFN package, Pb-free
Input/Output clock frequency up to 200MHz
Ideal for networking clocks
Operating voltages: 1.8V to 3.3V
Output Enable mode tri-states outputs
Advanced, low power CMOS process
Extended temperature range (-40°C to +105°C)
3.3V tolerant input clock