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normal NAND gate and Schmitt trigger NAND

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vinodquilon

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What is the difference between normal NAND gate and Schmitt trigger NAND ?
Does it is interchangeable in an application ?
 
A Schmitt trigger NAND has Schmitt trigger inputs which have hysteresis.

Schmitt trigger - Google Search

In most cases a Schmitt NAND can be used as a normal NAND but an application which requires a Schmitt NAND can't use a normal NAND. There are exceptions of course for example a CMOS gate with Schmitt trigger inputs can't be used as a linear amplifier and will oscillate at a high frequency if you try to do it.
 
A Schmitt trigger is a level sensitive gate. When the input voltage crosses the critical point, it will fully turn on or off. A normal gate will have problems with a slowly changing input. Check out the link in the previous response for a more detailed answer.
 
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