THVD1551: driver enables - 1551 vs 1552

Ali,

THVD1551 and THVD1552 share the same silicon therefore have the same performance. I'm not sure I understand "a better choice for long distance due to the ability to set output to high impedance"? In general if the device has stronger driving capability, it's better for long distance communication. In this sense, these two devices have no difference. Please let me know if you have more questions.

Regards,
Hao

Hi, thanks for the reply, let me try to rephrase:

in a network of 32 nodes consisting exclusively of 1552 components, will the ability to set driver output to high impedance on all "quiet" nodes yield better electrical and noise conditions on the line than an identical network of 1551 components which are unable to go high impedance when "quiet"?

Actually what I understand is the other way around. When the bus is idle, it's easier to be disturbed by the noise. The drawback of 1551 is that it consistently draw current since you cannot turn it off. Please let me know if it makes sense.

Regards,
Hao

Yes, thank you, that makes sense.

One last question: Assuming I'm planning a network of 32 nodes each separated by distances of 20 to 150m, baud rate of 115200 or 230400 (well under the max specification of either part), can you explain the functional difference between THVD1512 and THVD1552?

Is there a reason I should prefer one to the other, does the THVD1512 offer any advantage?