Digital timing diagram

A timing diagram or timing diagram is used to visualize the operation of digital circuits. It represents the change of the output signals with variation of input signals

Construction

The horizontal axis corresponds to the time on the vertical axis, the voltage level ( V ) or of the logic level ( either high or low) is shown. The signals are listed above each other. As the first line of the voltage curve of the clock signal (clock ) is frequently applied. Then usually follows the reset signal of the circuit. In the further course of the voltage characteristics of the data inputs (inputs) and outputs (outputs) are located.

Species

Pure logical behavior

In simpler pulse diagrams only the purely logical behavior of the circuit is taken into consideration (excluding the actual signal propagation times ). The technically induced signal propagation times of the components are not plotted in the diagram here.

Typical signal propagation times

In addition, the respective gate delay of the electronic components ( gates and flip-flops ) can also be taken into account in timing diagrams in addition to the purely logical behavior. In this case, only the individual typical value of each device is used for each switching operation.

Minimum and maximum signal propagation times

Correspond to a term tolerance calculation, the respective minimum and maximum delays can be used in the signal diagram. In the graph, the minimum and the maximum signal propagation time into account for each switching operation. These waveforms are plotted for each switching operation two temporally overlapping.

• Digital technology
• Diagram
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