I am trying to design a latch using a truth table. The inputs to the latch are En and In. I think the circuit implementing the truth table should not change output when En is low, and output In when En is high. This is the truth table:
En | In | Prev | Out
0 | X | 0 | 0
0 | X | 1 | 1
1 | 0 | X | 0
1 | 1 | X | 1
It results in the following circuit:
simulate this circuit – Schematic created using CircuitLab
I haven't seen this while looking around at latch schematics. Am I missing some concept here? Is this an incorrect latch?
Best Answer
I guess you have seen similar latches and maybe this will help you to see how familiar this circuit is: