# MC3031¶

MC3031 is an IC that implements a RS NAND latch (Frequently called SR-NAND Latch) with an inversed result for when both inputs are the same. Only the Q output is available.

When the S̅ (inverse “set”) input exclusively goes high, the output (Q) goes high and stays high even if S̅ goes low again. When the R̅ (inverse “reset”) input exclusively goes high, the output (Q) goes low and stays low even if R̅ goes low again. If both go high at the same time, the output goes high.

If both go low at the same time, the output does not change.

See MC3033 for a regular RS-NAND latch.

Equivalent Perlstone script: AB&[Lp0r]BA.1100dSp0r

Q
0 0 Keep State
1 0 1
0 1 0
1 1 1

1. INV RS-NAND
2. [MC3031]
3. Blank
4. Blank

• Set
• Reset

• Q

## Permissions¶

Node Description Default Role
craftbook.ic.safe.mc3031 Allows creation of the Inverse RS-Nand Latch (MC3031) IC. user