I have some digital inputs working 0V (for 0) to +12V (for 1).
1. I understand that I can't use TTL gates/flip-flops. What's the remplacement in CMOS? I use the following TTL's: 74LS32 (or another multiple input OR gate), 74LS74 (flip-flop)
2. I need to use 1-0 clock for flip-flops, I only know the standard 555 1-0 clock. What kind of clocks I can use? 555 are ok for +12V-0V? And witch time-intervale / frequency I can work?
3. The respective results (other digital outputs) obviusly will work with 0V (for 0) to +12V (for 1). I need to transform this to 0V (for 0) to +5V (for 1). What's the best (and the most cheap :razz form to do this?
Thank yoy very much! your help will be hopeful for my little project!
1. I understand that I can't use TTL gates/flip-flops. What's the remplacement in CMOS? I use the following TTL's: 74LS32 (or another multiple input OR gate), 74LS74 (flip-flop)
2. I need to use 1-0 clock for flip-flops, I only know the standard 555 1-0 clock. What kind of clocks I can use? 555 are ok for +12V-0V? And witch time-intervale / frequency I can work?
3. The respective results (other digital outputs) obviusly will work with 0V (for 0) to +12V (for 1). I need to transform this to 0V (for 0) to +5V (for 1). What's the best (and the most cheap :razz form to do this?