What is SR latch with control input?
An SR latch (Set/Reset) is an asynchronous device: it works independently of control signals and relies only on the state of the S and R inputs. In the image, we can see that an SR latch can be created with two NOR gates that have a cross-feedback loop.
What are the two inputs to an SR latch?
SR Latch is also called as Set Reset Latch. This latch affects the outputs as long as the enable, E is maintained at ‘1’. The circuit diagram of SR Latch is shown in the following figure. This circuit has two inputs S & R and two outputs Qt & Qt’.
What is the function of an SR latch?
In an S-R latch, activation of the S input sets the circuit, while activation of the R input resets the circuit. If both S and R inputs are activated simultaneously, the circuit will be in an invalid condition.
Is gated SR latch and SR flip flop same?
So, gated S-R latch is also called clocked S-R Flip flop or synchronous S-R latch. Since this latch responds to the applied inputs only when the level of the clock pulse is high, this type of flip-flop is also called level triggered flip flop.
Why is the condition s/r 1 not allowed for an SR latch?
S=1, R=1 is state forbidden in SR flip flop. The flip flop does not get damaged in forbidden state (S=R=1). It is called forbidden because there is no definitive gurantee of a fixed output. Was this answer helpful?
Why does race condition occur in SR latch and overcome it?
Race around condition arises in J-K flip flop when both J=K=1 & it can be overcome by using master slave JK flip flops.
What are the components of SR latch?
SR (Set-Reset) Latch – SR Latch is a circuit with: (i) 2 cross-coupled NOR gate or 2 cross-coupled NAND gate. (ii) 2 input S for SET and R for RESET. (iii) 2 output Q, Q’.
What is input latch?
A latch is an electronic logic circuit that has two inputs and one output. One of the inputs is called the SET input; the other is called the RESET input. Latch circuits can be either active-high or active-low.
What is gated SR latch?
A Gated SR Latch is a special type of SR Latch having three inputs, i.e., Set, Reset, and Enable. The enable input must be active for the SET and RESET inputs to be effective. The ENABLE input of gated SR Latch enables the operation of the SET and RESET inputs. This ENABLE input connects with a switch.
What is enable in SR latch?
The purpose of the Enable input is to enable or disable the Set and Reset inputs from having effect over the circuit’s output status. When the Enable input is “high,” the circuit acts just like the NOR gate S-R latch.
What should be the input in SR NOR latch circuit to behave as a memory?
So the R NOR gate receives that input (0) from the S NOR gate, and since the power going through the switch and into the R NOR gate is also a 0, that means both inputs are 0s.