LMK00334: looking for 3:1 clock Mux solution for PCIE Gen5

Ben Kuo

Part Number: LMK00334
Other Parts Discussed in Thread: LMK1D1204

Dear team,

We are looking for 3 inputs to 1 output clock mux solution for PCIE gen5 application.

The similar solution I found is LMK00334 but only support two different inputs.

Did we have 3:1 clk mux solution for PCIE gen5(HCSL)?

or can we use two LMK00334 for 3:1 mux application? I would like to check if two additive jitter from LMK00334 can support Gen5 or not.

Regards,

Ben

0 Asim Khan over 2 years ago

Hi Ben,

Currently, we have similar solutions to LMK00334 but there is no 3 differential inputs to 1 output MUX in the our product portfolio.

One solution would be to use them in cascaded mode to achieve three differential inputs. But this would require two buffer devices on the board.

This could be done with another LMK00334 or a more simple device like LMK1D1204 device.

Best,

Asim

0 Ben Kuo over 2 years ago in reply to Asim Khan

Hi Asim,

Thanks, but LMK1D1204 is LVDS output. I will use LMK00334*2 for 3:1 PCIE gen5 mux solution.

Regards,

Ben

0 Asim Khan over 2 years ago in reply to Ben Kuo

Hi Ben,

That's perfectly fine. LMK1D1204 can support HCSL as input and LVDS output can be used at input of LMK00334 which would give similar results.

Best,

Asim

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