Digital Electronics - Flip-Flops - Discussion
Discussion Forum : Flip-Flops - General Questions (Q.No. 3)
3.
Propagation delay time, tPLH, is measured from the ________.
Discussion:
13 comments Page 1 of 2.
KEVAL said:
1 decade ago
Propagation delay Tplh means low to high output.
So answer is A,
If Tplh is given then answer is B......
So answer is A,
If Tplh is given then answer is B......
Vasanthi said:
1 decade ago
Can any one explain it more clearly.
Shashank jain said:
1 decade ago
Can we have more explaination here?
Yisha said:
1 decade ago
Actualy propogation delay is the delay included by flip flop to change its state from (low to high) after the clk is aplied.
Komal said:
1 decade ago
Propagation delay is the time taken to change the state after applying the clock pulse.
TPLH means : propagation delay time for low to high transition of output.
Therefore,
Answer (A) is correct one.
Propagation delay time, tPLH is the time between (the instant at which clock pulse is applied) and (the instant at which the low to high transition of the output takes place).
TPLH means : propagation delay time for low to high transition of output.
Therefore,
Answer (A) is correct one.
Propagation delay time, tPLH is the time between (the instant at which clock pulse is applied) and (the instant at which the low to high transition of the output takes place).
Dsingh said:
1 decade ago
Propagation delay is the delay in transition of state of a flip flop when clock pulse is applied.
Tplh means the amount of delay occured after clock is applied in order to change its state from 0 to 1.
Tplh means the amount of delay occured after clock is applied in order to change its state from 0 to 1.
Stuaan said:
1 decade ago
When propagation delay Answer If one clock pulse is applied then low-high transition is occur between two or three times in a clock period at the time we said propagation delay. So propagation delay is occur when low to high transition.
Jitendra prajapat said:
1 decade ago
Propagation delay is the time taken to change the state after applying the clock pulse.
TPLH means : propagation delay time for 0 to 1 transition of output.
Therefore,
Answer (A) is correct one.
TPLH means : propagation delay time for 0 to 1 transition of output.
Therefore,
Answer (A) is correct one.
Nikhil said:
1 decade ago
TPLH is the time it takes for the input to the output from Low to High.
The thing to note here is that, the "change" in the output of the flip flop is not governed by the input at the Din port but the edge of the clock. So no matter when the input at Din arrived, it'll not affect the output unless a positive edge of the clock is encountered. This is the reason why TPLH (or HL) is measured with respect to clock.
The thing to note here is that, the "change" in the output of the flip flop is not governed by the input at the Din port but the edge of the clock. So no matter when the input at Din arrived, it'll not affect the output unless a positive edge of the clock is encountered. This is the reason why TPLH (or HL) is measured with respect to clock.
Vibhuti said:
10 years ago
Propagation delay is the time interval between the time of application of TRIGGERING EDGE or ASYNCHRONOUS INPUTS and the time at which it actually makes transition.
So according to that, if it is measured w.r.t to clock pulse then A is correct. But if it is measured w.r.t Asynchronous inputs (i.e present in this case) option C will be correct. So both A and C are correct.
So according to that, if it is measured w.r.t to clock pulse then A is correct. But if it is measured w.r.t Asynchronous inputs (i.e present in this case) option C will be correct. So both A and C are correct.
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