The 74HC574, 74HCT574 is an 8-bit positive-edge triggered D-type flip-flop with 3-state outputs. The device features a clock (CP) and output enable (OE) inputs. The flip-flops will store the state of their individual D-inputs that meet the set-up and hold time requirements on the LOW-to-HIGH clock (CP) transition. A HIGH on OE causes the outputs to assume a high-impedance OFF-state. Operation of the OE input does not affect the state of the flip-flops. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.
Mixed 5 V and 3.3 V applications Improved signal integrity with integrated termination resistors High noise immunity Flow through pin out for easy layout Wide supply voltage range Low propagation delay Overvoltage tolerant input options Integrated source termination resistor options Bus hold options Key applications Frequency division Controlled delays Interface between asynchronous and synchronous systems
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