SN74F74N | Texas Instruments

Logic gate, SN74F74N, Texas Instruments

This device contains one independent positive-edge-triggered D-type flip-flop. A low level at the preset input sets or resets the output regardless of the levels of the other inputs. When preset and clear are inactive (high), data at the data (D) input meeting the setup time requirements is transferred to the output on the positive-going edge of the clock pulse. Clock triggering occurs at a voltage level and is not directly related to the rise time of the clock pulse. Following the hold-time interval, data at the D input may be changed without affecting the level at the output.