5i23 buffer

I wanted to know for interface encoders and H-bridge I can use 74lcx541
(5 volt tolerant) power at 3.3 volts.
regards
Mauro

That will work, but also 5V output CMOS buffers will work fine as long as the 5I23 is jumpered in 5V tolerant mode (this is the default 5I23 setup)

If you want a differential encoder interface you would need to use a differential receiver like the 26LS32

this is good news!.
Since I now have a perfect cnc servo dc step / dir mode with two parallel ports.
before installing the 5i23 card in the best way
now for example I use 26LS31 for interface. 26ls32 for driver.
5 volt TTL encoder instead. non-differential
of course I will use only h-bridge on board without cpu.
can be useful if I have no problem to put all differential both input and output
this way I can keep the masses separated and less noise
thanks
Mauro