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Dual D-Type Flip-Flop with Preset and Clear
MM74HC74A
The MM74HC74A utilizes advanced silicon−gate CMOS technology to achieve operating speeds similar to the equivalent LS−TTL part. It possesses the high noise immunity and low power consumption of standard CMOS integrated circuits, along with the ability to drive 10 LS−TTL loads.
This flip−flop has independent data, preset, clear, and clock inputs and Q and Q outputs. The logic level present at the data input is transferred to the output during the positive−going transition of the clock pulse. Preset and clear are independent of the clock and accomplished by a low level at the appropriate input.
The 74HC logic family is functionally and pinout compatible with the standard 74LS logic family.