HD74HCT574 outputs) equivalent, octal d-type flip-flops (with 3-state outputs).
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* LSTTL Output Logic Level Compatibility as well as CMOS Output Compatibility High Speed Operation: tpd (D to Q, Q) = 15 ns typ (CL = 50.
These devices are positive edge triggered flip-flops. The difference between HD74HCT564 and HD74HCT574 is only that the former has inverting outputs and the latter has non-inverting outputs. Data at the D inputs, meeting the set-up and hold time requ.
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