841N254B - NG Crystal-to-LVDS/ HCSL Clock Synthesizer

IDT

Datasheet Details

The 841N254B is a 4-output clock synthesizer designed for S-RIO 1.3 and 2.0 reference clock applications..

▪ Fourth generation FemtoClock® (NG) technology ▪ Selectable 250MHz, 156.25MHz, 125MHz or 100MHz output clock synthesized from a 25MHz fundamental mode crystal ▪ Four differential clock outputs (two LVDS and two HCSL outputs) ▪ Crystal interface designed for 25MHz, parallel resonant crystal ▪ RMS phase jitter at 156.25MHz, using a 25MHz crystal (1MHz - 20MHz): 0.27ps (typical) ▪ RMS phase jitter at 156.25MHz, using a 25MHz crystal (12kHz - 20MHz): 0.32ps (typical) ▪ Power supply noise rejection.

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