Hi,
I've got a project where I'll need to have some inputs and outputs in a automotive application (5V and 12V mixed).
My micro is 5V tolerant with 1 or 2 open collectors so going right to the pin is a bad idea. Can anyone recommend some schematics, design tips, circuits that might be closer to "approved methods" then what I may come up with on my own ?
I've done this work before but its always kinda flaky and I'm sure there is a better method for outputting 12V then the single NPN transistor I usually use.
I'm going for pretty bomb proof circuits, although the loads (in and out) will be automotive I'm not planning for any extreme disasters.
Any advice ?
Thanks!
iso
ps> Other then voltage following op amps I've never been really down on 5V protection components so if anyone has some good tips there, thats also quiet welcome,
I've got a project where I'll need to have some inputs and outputs in a automotive application (5V and 12V mixed).
My micro is 5V tolerant with 1 or 2 open collectors so going right to the pin is a bad idea. Can anyone recommend some schematics, design tips, circuits that might be closer to "approved methods" then what I may come up with on my own ?
I've done this work before but its always kinda flaky and I'm sure there is a better method for outputting 12V then the single NPN transistor I usually use.
I'm going for pretty bomb proof circuits, although the loads (in and out) will be automotive I'm not planning for any extreme disasters.
Any advice ?
Thanks!
iso
ps> Other then voltage following op amps I've never been really down on 5V protection components so if anyone has some good tips there, thats also quiet welcome,