The 74LVC74A is a dual edge triggered D-type flip-flop with
individual data (nD) inputs, clock (nCP) inputs, set (nSD) and
(nRD)
inputs, and complementary nQ and nQ outputs.The set and reset are
asynchronous active LOW inputs and operate independently of the
clock input. Information on the data input is transferred to the nQ
output on the LOW-to-HIGH transition of the clock pulse. The nD
inputs must be stable one set-up time
prior to the LOW-to-HIGH clock transition, for predictable
operation.
Schmitt trigger action at all inputs makes the circuit highly
tolerant of slower input rise and fall times.
