digital logic - How to understand the SR Latch - Electrical …
2013年3月19日 · The best way to define a state is after startup assert either the set or reset to put the SR latch into a known state. As a side note, in general SR latches asserting S and R at the same time will also result in undefined behavior and you're relying on similar voodoo to set the outputs (a real implementation may shut off both outputs, randomly ...
flipflop - How does an SR-latch actually work? - Electrical …
2021年10月22日 · In case of a NOR SR-latch, if we make S = 0 and R = 0, then output Q = 1 and nQ = 0. I also know one important rule which is if we put high input in the set line (S = 1) then output Q goes high. If...
SR latch with both inputs at 0 - Electrical Engineering Stack Exchange
2023年8月29日 · The SR latch will take a tiny bit of time for the output to settle on power-up - on the order of its propagation delay. Some latches reliably act as random "coin toss" generators, usually slightly biased towards either 1 or 0.
logic gates - How does this SR latch work? - Electrical Engineering ...
2014年10月7日 · It's important to notice that with "R" and "S" both low and the latch SET, the latch is stable and in one of its quiescent states. In "F", "R" is driven high, which forces "Q" low, and since "S" is already low, U2-1 going low forces notQ high, RESETing the latch and driving U1-2 high, making the state of "R" unimportant.
SR latch timing diagram or waveform with delay, help!
As Trevor shared the image in the comment, S-R latch contains NOR gates. In the first timing diagram, when S becomes 1, after 10ns QN becomes 0, and 10ns later Q becomes 1. Now, draw the S-R latch with NOR gates, write initial values near corresponding letters (S=0, R=0, Q=0, QN=1), change S to 1, and try to understand what changes you see.
Doubt regarding SR latch - Electrical Engineering Stack Exchange
2022年2月28日 · Digital logic is just 'convenient analogue'. Remember to never lose sight of the actual analogue circuits in that logic. Each of the logic gates is a very high gain amplifier and the SR latch has high-gain positive feedback. The input thresholds are not balanced and the circuit has an indeterminate region.
SR latch conventions - Electrical Engineering Stack Exchange
2018年5月25日 · NAND gate based SR latches are actually called S'R' latches. This is because unlike NOR gate based SR latch which require a 1 to set or reset, NAND based gates required 0. There is nothing sacrosanct about the convention used, your convention is equally good.
digital logic - SR Latch: Why reverse S and R in NAND and NOR if …
2019年11月22日 · Here is a NOR based SR latch: And here is a NAND based SR latch: So, basically first we flipped the orientation of R and S and then declare that in our NAND latch, the output would be flipped i.e. 0 for set and 1 for reset which defies the meaning of set and reset.
SR latch and flipflops - Electrical Engineering Stack Exchange
2024年12月11日 · I am doing the practical of an SR (NOR) latch. I am initially giving input s=0,r=0, then I power on the SR latch, I found that q=0 and q'=1. I did it several times by turning on and off the circuit with 0,0 each time the output changes. Some times q=0 and q'=1 and sometimes q=0 and q'=1.
flipflop - SR latch and level sensitive SR latch - Electrical ...
2016年5月10日 · There is only level sensitive or gated SR latch's. The other type of latch is edge triggered, also known as a flip-flop. Your diagram shows a SR latch with gated inputs. In other words it can be set or cleared only if C (the gate control) is true and either S or R are true. If S & R are true and C becomes false, the output is unpredictable.