com MC74AC823 Product Preview 9ĆBit Register With 3ĆState Outputs (NonĆInverting) The MC74AC/ACT823 consists of nine D-type edge-triggered flip-flops.
This device has 3-state outputs for bus systems, organized in a broadside pinning.
In addition to the clock and output enabled pins, the buffered clock (CP) and buffered Output Enable (OE) are common to all flip-flips.
The flip-flops will store the state of their individual D inputs that meet the setup and hold time requirements on the LOW-to-HIGH CP transition.
With OE LOW, the contents of the flip-flops are available at the outputs.
When OE is HIGH, the outputs go to the high impedance state.
Operation of the OE input does ...

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