NANDL (RS Latch)
Asynchronous Reset-Set Latch built from NAND gates.
Model
Operation
The NANDL is an active-low RS latch. It maintains its state when both inputs are 1. The
state is changed by pulling either S or R to 0.
| S (Set) | R (Reset) | Q (Next) | Comment |
|---|---|---|---|
| 1 | 1 | Q | Last state |
| 0 | 1 | 1 | Set |
| 1 | 0 | 0 | Reset |
| 0 | 0 | 1 | Disallowed (Both 1) |
| X | — | X | Unknown state |
Equivalent Type Statement
Type=NANDL i=S,R o=Q