Datasheet Summary
74HC574 Octal 3- State Noninverting D Flip- Flop
High- Performance Silicon- Gate CMOS
The 74HC574 is identical in pinout to the LS574. The device inputs are patible with standard CMOS outputs; with pull- up resistors, they are patible with LSTTL outputs. Data meeting the set- up time is clocked to the outputs with the rising edge of the Clock. The Output Enable input does not affect the states of the flip- flops but when Output Enable is high, all device outputs are forced to the high- impedance state. Thus, data may be stored even when the outputs are not enabled. The HC574 is identical in function to the HC374A but has the flip- flop inputs on the opposite side of the package from the...