S-R Latch

Two inputs: [S and R]

Two complementary outputs: [Q and Q’]

When Q = High -> latch is in SET state

When Q = LOW -> latch is in RESET state

  • Two variants:

    Active high input S-R Latch (active = 1)

    Active low input S-R Latch (active = 0)

Used in MIPS pipeline registers

Shortcomings

Solution: flip-flops