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Total jitter added to GMC (or WSCA signal) is:

1- Jitter added by Type-1 M-LVDS buffer ([[http://www.ti.com/product/sn65mlvd201|SN65MLVD201D]])
.Type-1 M-LVDS buffer is ideal for clock signals. Please see datasheet for jitter information.

2- Jitter added by 1-to-2 buffer ([[http://www.idt.com/products/clocks-timing/clock-distribution/fanout-buffers-clock-dividers-and-multiplexers-mux/8302-low-skew1-2-lvcmoslvttl-fanout-buffer|ICS8302AMLF]]).
Phase noise plots of IDT8302 (ICS8302AMLF) at 100MHz.  The input jitter was 65.64fs and the output jitter was 275fs.  Therefore the additive phase jitter is the square root of the difference of the two squared (Sq rt (275^2-65.64^2) which equals 267.05fs

{{ :8302_inputjitter100mhz_12k-20m_smoothingoff_spurson.png |}}
{{ :8302_outputjitter100mhz_12k-20m_smoothingoff_spurson.png |}}

3- Jitter added by LVCMOS-to-LVDS buffer ([[http://www.ti.com/product/DS90LV027A|DS90LV027ATM]]). Please see datasheet for jitter information.