Digital interface conversion to LVTTL 3.3V

[avsbaler]

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]

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.

 

[Pommie]

i have 2 discrete input interfaces

If you already have the devices, what do you need help with?

Mike.

 

[ronsimpson]

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]

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.