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CDCLVP111: questions about CLK_SEL pin spec

Part Number: CDCLVP111

Tool/software:

Hello,

The CLK_SEL is single-end input and the datasheet pin description says it is LVTTL/LVCMOS functionality compatible. However, the datasheet “6.6 DC Electrical Characteristics, LVPECL” specifies VIH and VIL spec as LVPECL. My customer is confused. Does CLK_SEL pin can be driven with LVTTL/LVCMOS signal?
And it can be also driven by LVPECL signal?

Best regards,

K.Hirano