Hi,
I am trying to see if this interface will work. I am worried about the Vol to Vih relationship as there is no margin. The vendor of the driver thinks it will be ok. Here are the parameters:
Driver: Voh=2.3V (min), Vol=0.8V(max)
Receiver: Vih=2.0V(min), Vil=0.8V(max)
So as you can see there is no margin when driving low. My questions:
1) Is this ok? Won't any noise cause it to go to an unknown logic area?
2) Is there something I can do to bring down Voh? A pulldown?
3) Will the driver ever be able to drive 0.8V when in the low state? Does it depend on Iol and Iil?
Thanks!
I am trying to see if this interface will work. I am worried about the Vol to Vih relationship as there is no margin. The vendor of the driver thinks it will be ok. Here are the parameters:
Driver: Voh=2.3V (min), Vol=0.8V(max)
Receiver: Vih=2.0V(min), Vil=0.8V(max)
So as you can see there is no margin when driving low. My questions:
1) Is this ok? Won't any noise cause it to go to an unknown logic area?
2) Is there something I can do to bring down Voh? A pulldown?
3) Will the driver ever be able to drive 0.8V when in the low state? Does it depend on Iol and Iil?
Thanks!