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Flip-Flops
A gated S-R flip-flop goes into the SET condition when S is HIGH, R is LOW, and EN is HIGH.
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Flip-Flops
All multivibrators require feedback.
Most basic latches and flip-flops are available in IC packages of eight latches or flip-flops with a common clock.
The 7475 is an example of an IC D latch (also called a bistable latch) that contains four transparent D latches.
VHDL does require a special designation for an output with a feedback.
Pulse-triggered flip-flops are identified by a bubble on the Q output terminal.
Edge-triggered J-K flip-flops make it hard for design engineers to know when to accept input data.
The propagation delay time tPLH is measured from the triggering edge of the clock pulse to the LOW-to-HIGH transition of the output.
A TOGGLE input to a J-K flip-flop causes the Q and outputs to switch to their opposite state.
Pulse-triggered or level-triggered devices are the same.
A latch can act as a contact-bounce eliminator.
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