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LMK00334-Q1: Cascaded LMK00334

Part Number: LMK00334-Q1
Other Parts Discussed in Thread: LMK00334


Can you please confirm:

1) No concern needed to have two or three cascaded LMK00334 for the PCIe Gen2 clock distribution;

2) between two cascaded LMK00334, the output to input termination should follow DC coupling as per DS "Figure 9-6. HCSL Operation, DC Coupling".

Thank you,

George Huang

  • George,

    1) There would be no concern other than the additive jitter and propagation delay.  We have other buffers for PCIe distribution with more outputs that would be a better solution, unless you need the automotive grade -Q1.

    2) For the cascaded input to the LMK00334, yes use DC coupling as shown in the datasheet.