Difference between Static-1 and Static-0 hazard

Static hazard occur in combinational circuits and can be eliminated by using redundant gates. Static hazard is classified as:

1. Static-1 hazard :
If the output is currently at logic state 1 and after the input changes its state, at the same moment the output changes to 0 before settling on 1, then it is a Static-1 hazard.

2. Static-0 hazard :
If the output is currently at logic state 0 and after the input changes its state, at the same moment the output changes to 1 before settling on 0, then it is a Static-0 hazard.

Difference between Static-1 and Static-0 hazard:



STATIC-1 HAZARD STATIC-0 HAZARD
Output changes from 1 to 0. Output changes from 0 to 1.
It is false ‘0’ level for a short interval. It is false ‘1’ level for a short interval.
AND-OR circuit produces static-1 hazard. NAND-NOR circuit produces static-0 hazard.
The graph goes from high to low then again high. The graph goes from low to high then again low.
Static-1 hazard with contact networks is a tie set hazard. Static-0 hazard with contact networks is a cut set hazard.
SOP is used for removing static-1 hazard. POS is used for removing static-0 hazard.
We deal with 1s in staic-1 hazard. We deal with 0s in static-0 hazard.

Don’t stop now and take your learning to the next level. Learn all the important concepts of Data Structures and Algorithms with the help of the most trusted course: DSA Self Paced. Become industry ready at a student-friendly price.

My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.