How do I switch between RS-422 and TTL signals?

[Kelson]

Hello all,

I need a circuit to switch between 2 pulse signals and the input the same for both (one is TTL and the other RS-422).

Is there any IC that could execute this?

Thanks in advance

Kelson

[Henrik_Volkers]

I guess you need more than one IC to SWITCH. TTL is voltage driven, RS-442 is current loop.

Or do you need a driver circuit from one to the other?  

Appnotes from National Semi, Linear, Maxim will help 😉

[K C]

Hi,

This can be done with a analogue switch like a 4066 but it depends on your circuits and want you want to do.