I am not good with this stuff lol,
Does anyone know if a SN74HCT573N would work better as a level shifter vs say a SN74HCT245N?
I am wondering because it looks like Kulp controllers and Falcon controllers use the 753’s on their controllers. If they have chosen those I have to wonder if they work better or are capable of sending data farther or something. Anyone have any ideas?
Pic of one on a Falcon:
Pic of one on a Kulp smart dif’ receiver:
I wouldn’t choose either of those but if you had a bunch handy they could be made to work. Outputs are identical so aside from the logic function (latch vs bidirectional translator) they’ll both drive the line the same.
Any reason you don’t pick a normal 3.3 → 5v buffer or translator?
The 245N is recommended in the KB for 8 outputs (well the AHCT version, but as I understand for our usage the non A version should work fine).
I am just wondering why a $230 controller would choose the 573 over the 245. Just guessing that maybe it works better.
As far as how their outputs translate from 3.3V to 5V, they will be identical.
The entire HCT/AHCT families have the same typr of output drive capabilities in all their devices.
Their input stages are all the same (with the possible exception of a few Schmitt-Trigger devices).
That’s part of the reason they’re called a “family” of devices.
My guess on the use of the 573 - that device is an octal latch as opposed to the 245 being a simple buffer. It’s possible some of their other boards/functions make use of the latch feature.
Choosing a latch instead of a buffer lets them have one part that fulfills two different functions.
Less parts to stock for builds.
