PLL clock buffer for DDR memory buses
The Cypress CY2SSTV850ZC is a PLL-based clock driver that distributes a single reference clock to up to ten SSTL-2 loads.
Differential I/O and PLL bypass
Both the input and outputs are differential (Yes/Yes per the spec), which improves noise immunity and reduces electromagnetic emissions compared to single-ended clock distribution. The PLL can be bypassed (Yes with Bypass), allowing the input clock to pass through to the outputs with minimal added jitter — useful for system test modes or when the PLL's frequency multiplication is not needed. The part does not include an internal divider or multiplier (No/No).
The part is marked RoHS non-compliant. For designs targeting EU RoHS or similar regulations, a lead-free equivalent should be evaluated.
Sourcing posture
Given the active lifecycle and RoHS constraint, the buyer should confirm the acceptable compliance level for the target market before committing the BOM line.