The 74HC74 and 74HCT74 are dual positive edge triggered D-type flip-flop. They have individual data (nD), clock (nCP), set (nSD) and reset (nRD) inputs, and complementary nQ and nQ outputs. Data at the nD-input, that meets the set-up and hold time requirements on the LOW-to-HIGH clock transition, is stored in the flip-flop and appears at the nQ output. Schmitt-trigger action in the clock input, makes the circuit highly tolerant to slower clock rise and fall times.
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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