Some question about interconnect with LVTTL and LVPECL

[Altera_Forum]

Hello everyone: 

  I am using a D flip-flop chip of ON semiconductor, attached is the datasheet. All of this chip's IO are ECL type. I have to control some pins (such as reset pin) from FPGA, so there is a issue of how to drive LVPECL using LVTTL signal?   A simple LVTTL to LVPECL interface without interface IC ?  Any info ?   If I want a single ended output from a LVPECL,can I leave  the other differential output open (unconnected) ?  Thanks  Jerry

[Altera_Forum]

Level conversion from 3.3V or 2.5V FPGA IOs to LVPECL can be done with resistive voltage dividers. For LVPECL to FPGA interface, use resistors and LVDS inputs.

[Altera_Forum]

OnSemi conductor (Motorola ECL) has some good app notes. This one shows LVDS interfacing to LVPECL 

 http://www.onsemi.com/pub_link/collateral/an1568-d.pdf  while this one has translators  http://www.onsemi.com/pub_link/collateral/an1672-d.pdf  Perhaps those will be useful.  Cheers, Dave