Intel® MAX® 10 High-Speed LVDS I/O User Guide

ID 683760
Date 11/01/2021

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4.2.6. LVPECL External Termination

The Intel® MAX® 10 devices support the LVPECL I/O standard on input clock pins only.
  • LVDS input buffers support LVPECL input operation.
  • LVPECL output operation is not supported.
Use AC coupling if the LVPECL common-mode voltage of the output buffer does not match the LVPECL input common-mode voltage.
Note: Intel recommends that you use IBIS models to verify your LVPECL AC/DC-coupled termination.
Figure 22. LVPECL AC-Coupled Termination

Support for DC-coupled LVPECL is available if the LVPECL output common mode voltage is within the Intel® MAX® 10 LVPECL input buffer specification.

Figure 23. LVPECL DC-Coupled Termination

For information about the VICM specification, refer to the device datasheet.