Interfacing CML devices at different Vcc levels?

[DenzilPenberthy]

Hi,  I've got various components in a signal chain which use CML input/output stages. However I can't find all the components I need in the same Vcc range. Some are 5/3v3, some are 3v3/2v5 and some are 2v5/1v8. So I can't makle the whole chain the same Vcc. I can narrow it down to one discontinuity - from a 3v3 output to a 2v5 input.

Our signal isn't DC balanced which makes AC coupling problematic.

Is there some easy way that I'm missing to interface a 3v3 CML output (which is internally pulled up to 3v3):
https://de.wikipedia.org/wiki/Current_Mode_Logic#/media/CML_output_stage.svg

with a 2v5 CML input which idealy needs to be terminated with a pullup to 3v3 to satisfy the requirements of the output
https://en.wikipedia.org/wiki/Current-mode_logic#/media/CML_line.svg

Cheers.

(I couldn't get inline picture to work  and the links seem to take you to the wikipedia pages, rather than the images, sorry)