SR Latch (NAND version) S′R'Q 0 1 dIsallowed 0110Set 100 1 Reset Qn Qn HoldS’R’ Latch (NAND version) S’ R’ Q Q’ 0 0 0 1 1 0 1 1 1 0 Set 0 1 Reset 1 1 Disallowed S’ R’ Qn+1 Qn+1 ’ Qn Qn ’ Hold