How can I get a +1.8 volt to +4.2 volt square wave to match up with a TTL input?

Comments

• Phil Pilgrim (PhiPi) Posts: 23,514

  2012-09-25 22:14 edited 2012-09-25 22:14

  Two diodes (1N4148 or 1N914) in series with a resistor sink to ground should to the trick.
  
  -Phil
• ElectricAye Posts: 4,561

  2012-09-25 22:21 edited 2012-09-25 22:21

  Phil Pilgrim (PhiPi) wrote: »

  Two diodes (1N4148 or 1N914) in series with a resistor sink to ground should to the trick.
  
  -Phil

  
  Awesome, Phil, thanks! I was hoping you were up tonight. 'Much obliged!
• PJAllen Banned Posts: 5,065

  2012-09-26 11:43 edited 2012-09-26 11:43

  Drat, this diurnal lifestyle I lead.
  
  http://www.falstad.com/circuit/e-dcrestoration.html
• Publison Posts: 12,366

  2012-09-26 12:54 edited 2012-09-26 12:54

  PJ Allen wrote: »

  Drat, this diurnal lifestyle I lead.
  
  http://www.falstad.com/circuit/e-dcrestoration.html

  
  Darn you PJ. Every time you post I have to look up a new word.
  
  Diurnal
• ElectricAye Posts: 4,561

  2012-09-26 13:38 edited 2012-09-26 13:38

  PJ Allen wrote: »

  Drat, this diurnal lifestyle I lead....

  
  Indeed, I can see how that might make things complicated for you.