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SN65LVDS31 output -0.4V when G=G/=Low level

kyt
Expert 2355 points
Other Parts Discussed in Thread: SN65LVDS31

Hi,

In my board,SN65LVDS31 was set as below:

G = G/ =L

1A(LVTTL input )=0-3V,50MHz

So, LVDS output is

1Y = 1Z = -0.4V

is it correct operation?

http://www.ti.com/product/sn65lvds31

best regards,

kyt

  • 0
    TI__Mastermind 20820 points
    Hi kyt,

    G = /G = L is a valid state for the SN65LVDS31 so I would expect normal operation from the part.

    What is the differential voltage (Vod) being supplied by the SN65LVDS31 and the common mode level (Vcm)? What does -0.4V represent in your description of the problem? A DC level? Is the part switching at all?