Hi,
I am trying to use EMIF08-LCD04M16 for RGB display and camera. The part looks to me has symmetrical structure. Can it be used as bidirectional data lines?
Thanks.
Suchong
Hello suchong.hua,
Welcome to the DigiKey TechForum.
This filter is designed for Data Lines, and has 8 independent channels. Each channel appears to be Unidirectional, as each filter has an input side, and an output side.
Please check the Datasheet for further information on this item.
Hi suchong.hua,
Despite the fact that they do define input and output pins in their datasheet, the internal schematic of each line appears to be symmetrical, as you say.
If this is an accurate depiction of the internals of the part, I do not see any reason why it could not be used in a bi-directional manner, though I could be missing something which might counter this conclusion.
Conceivably, having adjacent channels passing current in opposite directions might be an issue, but there does not appear to be any fundamental reason why it couldn’t be done.
I suspect that the distinction between “input” and “output” if any may occur in relation to the ESD protection feature, since a case could be made for sizing the dissipating elements differently depending on whether they face “inside” or “outside” a device envelope. I’d offer the observation that figures 5 and 6 suggest that the “input” ports are those which face “outside” in such a case.
Or the device may in fact be symmetrical as other indicators seem to suggest. The documentation doesn’t seem to be terribly clear on the point…