双D触发器—74ls74介绍

The SN74LS74A dual edge-triggered flip-flop uTIlizes Schottky .TTL circuitry to produce high speed D-type flip-flops. Each flip-flop has individual clear and set inputs, and also complementary Q and Q outputs.InformaTIon at input D is transferred to the Q output on the posiTIve-going edge of the clock pulse. Clock triggering occurs at a voltage level of the clock pulse and is not directly related to the transiTIon time of the positive-going pulse. When the clock input is at either the HIGH or the LOW level, the D input signal has no effect.