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Digital interface conversion to LVTTL 3.3V

avsbaler

New Member
i have 2 discrete input interfaces 15V_10mA converted to LVTTL 3.3V output. DI15V_10mA receiver shall be compliant with the following electrical characteristics:
Input voltage : 15V
Pull-down resistor ≥ 1500 Ω
Current: 1mA ≤ I ≤ 10mA
Input: Open (ie <5V) -> Output: 0V
Input: High (ie>10V) -> Output: 3.3V

Can any one help.
 

kubeek

Well-Known Member
Most Helpful Member
What do you need help with? This sounds awful lot like a homework assignment, so I suggest you try to find some solution, and then we can help with that.
 

ronsimpson

Well-Known Member
Most Helpful Member
118938
Do you want some thing simple that almost does what you want or do you need some thing complicated with a IC or two?
 

rjenkinsgb

Well-Known Member
Most Helpful Member
Do you want some thing simple that almost does what you want or do you need some thing complicated with a IC or two?
That would just need a 5.1V zener in series with the input, to comply with the "0V out with 5V in" part, then the resistor values swapped over.
 

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