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65lvds1 LVDS Driver

Bnovus
Intellectual 490 points

I am going to be using this part to send a 10Mhz reference signal.  I will be driving the part with a 3.3 signal with rise and fall times on the order of 5 ns

 

1. What is the max rise and fall times of the input signal? Is there any schmitt trigger action? am I going to see oscillation at the transition point?

2. As a transmitter, do I need to install termination resistance on the output of the driver to improve signal quality--if so what is recommended>

3. I may be stuck with a 5 vdc Cmos signal. Can I use a series resistor to the input and have the device still work well. I could also add a schottky diode from the input to 3.3vdc.

 

Thanks

 

Bill

 

  • 0
    TI__Expert 7850 points

    Bill,

     

    1. The 5ns rise and fall time for the single ended input signal that you state for your application is OK.  You are not likely to see oscillation at the transition.

    2. Typically, LVDS outputs do not need termination.  LVDS is terminated at the receiver.

    3. Page 3 of the data sheet state the max rating for the D input pin to be Vcc + 2V. So you may need to adjust the Vcc within the tolerance range.

     

    Thanks,

     

    Atul Patel

    Texas Instruments