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Dealing with open inputs on SN65LVELT23...

Jose Diaz
Prodigy 10 points
Other Parts Discussed in Thread: SN65LVELT23

Hello,

I am dealing with a design that may encounter open LVPECL inputs on SN65LVELT23 (LVPECL to LVTTL translator).  From the data sheet, I can see the device has two 50k pull resistors guaranteeing  'Vcc/2' biasing on both 'D' and '/D' inputs.  

Per the datasheet, I don't believe that guarantees a low output condition (as I would not have enough difference in the inputs for the output to switch), making me think that I have to add a weak pull resistor (say around 25k to 50k) if I want a guaranteed output.  Am I thinking this correctly?

Would this also work if I have a 'Y' Thevenin termination with three 50 ohm resistors?

Thanks in advance,

Jose