The 74F574 is a high speed, low power octal flip-flop with a buffered common Clock ( CP ) and buffered common output Enable ( OE ). The information presented to the D-input is stored in the flip-flop on the LOW-to-HIGH clock ( CP ) transition.
The input and output sides of the package allows easy interface with microprocessors. It is useful as an input and output port for microprocessors. It gives three-state outputs for bus oriented applications.