HD74LVC374A Octal D-type Flip Flops with 3-state Outputs REJ03D0355–0400Z (Previous ADE-205-113B (Z)) Rev.
4.
00 Jul.
27, 2004 Description The HD74 LVC374A has eight edge trigger D type flip flops with three state outputs in a 20 pin package.
Data at the D inputs meeting set up requirements are transferred to the Q outputs on positive going transitions of the clock input.
When the clock input goes low, data at the D inputs will be retained at the outputs until clock input returns high again.
When a high logic level is applied to the output control input, all outputs go to a high impedance state, regardless of what signals are present at the other inputs and the state of the storage elements...

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