MM54HC75/MM74HC75 4-Bit Bistable Latch with Q and Q Output General Description This 4-bit latch utilizes advanced silicon-gate CMOS technology to achieve the high noise immunity and low power consumption normally associated with standard CMOS integrated circuits. These devices can drive 10 LS-TTL loads. This latch is ideally suited for use as temporary storage for binary information processing, input/output, and indicator units. Information present at the data (D) input is transferred to the Q output when the enable (G) is high. The Q output will follow the data input as long as the enable remains high. When the enable goes low, the information that was present at the data input at the time the transition occurred is retained at the Q output until the enable is permitted to go high again.