DESCRIPTION
The U74AC74 is a dual positive-edge-triggered D-type flip-flop. The preset ( PRE ) and clear ( CLR ) input can set or reset the output at a low level ,regardless of the level of others inputs .when the PRE and CLR are inactive(high), data at the data D input meeting the set-up time requirements is transferred to the outputs on the positive-going edge of the clock pulse. Following the hold-time interval, data D can be changed without affecting the levels at the outputs.

FEATURES
* Operating voltage rauge: VCC(OPR)=2V to 6V.
* Inputs accept voltages to 6V
* Max tpd at 10ns of 5V