Latches and flip-flops are both types of circuits used in digital electronics to store binary information. But with this similarity, there are some key differences between them.
A latch is a circuit that has two stable states and can store one bit of information. It is a level-sensitive device, which means that its output depends on the level of the inputs.
Latches are often used to store the state of a system and are used in many applications, such as data storage, memory, and sequential logic.
A flip-flop, is a circuit that has two stable states and can store one bit of information. It is an edge-sensitive device, which means that its output changes only when a specific edge of the input signal is detected.
Flip-flops are used to store binary information in digital systems and are typically used in synchronous circuits to ensure that all events occur synchronously.
|1||Clock Input||Latches do not have clock input||Flip-flops do have clock input|
|2||Sensitivity||Latches are level-sensitive||Flip-flops are edge-sensitive|
|3||Stability||Latches are unstable||Flip-flops are stable devices|
|4||Sequential Logic||Latches are often used in sequential logic circuits||Flip-flops are used in synchronous circuits|
|5||Set-Reset||Latches don’t often have a set and reset input||Flip-flops often have a set and reset input, which allows the user to explicitly set or reset the state of the flip-flop|
|6||Output Behavior||Latches may oscillate if the inputs are not stable||Flip-flops are always stable as long as the clock signal is stable|
In summary, one of the key differences between latches and flip-flops is that latches are level-sensitive, while flip-flops are edge-sensitive.
Another difference is that latches do not have a clock input, while flip-flops do. This means that flip-flops can change state only when a clock signal is present, while latches can change state as soon as the inputs change.