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Generatin square waveform using ttl

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mtijijoy

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I need to generate a square waveform with 30% duty cycle having +/-5volt peak voltages by using a ttl circuits
 

tusemo

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Is it allowed to use microcontroller ?
 

mtijijoy

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No..actually i need to convert a square wave of o to 5volt to +/-5volt wave form ...
 

crutschow

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You can't readily do that with TTL chips.

What is the maximum frequency of the square-wave?
 

fareen

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use 555 timer that can do that
 

crutschow

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You could use a high speed comparator, such as one of these, operating from ±5V supplies. Bias the negative input to about +1.5V. Feed the TTL signal to the positive input.

You may need to add some hysteresis to the positive input to avoid oscillations during the waveform transition.
 
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