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239:: any increase in load capacitance increases C, heat-induced resistance the R factor, and supply threshold voltage increases will affect whether more than one time constants are required to reach the threshold. If the output of a logic gate is connected to a long trace or used to drive many other gates (high
235:(often expressed as a percentage of the high-voltage supply rail), naturally increases proportionately. Increases in output load capacitance, often from placing increased fan-out loads on a wire, will also increase propagation delay. All of these factors influence each other through an
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allows them to process data at a faster rate and improve overall performance. The determination of the propagation delay of a combined circuit requires identifying the longest path of propagation delays from input to output and by adding each propagation delay along this path.
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this refers to the time required for the output to reach 50% of its final output level from when the input changes to 50% of its final input level. This may depend on the direction of the level change, in which case separate fall and rise delays
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Wires have an approximate propagation delay of 1 ns for every 6 inches (15 cm) of length. Logic gates can have propagation delays ranging from more than 10 ns down to the picosecond range, depending on the technology being used.
59:, propagation delay is the amount of time it takes for the head of the signal to travel from the sender to the receiver. It can be computed as the ratio between the link length and the propagation speed over the specific medium.
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field, the propagation delay is the length of time it takes for a signal to travel to its destination. For example, in the case of an electric signal, it is the time taken for the signal to travel through a wire. See also
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becomes stable and valid to change, to the time that the output of that logic gate is stable and valid to change. Often on manufacturers'
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generally ranges from .59c to .77c. This delay is the major obstacle in the development of high-speed computers and is called the
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Digital Design A Comprehensive Guide To Digital Electronics And Computer System Architecture
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Time for a signal or other quantity to reach its destination
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197:are given. Reducing gate delays in
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227:Propagation delay increases with
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452:Timing in electronic circuits
376:"Logic Signal Voltage Levels"
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18:Signal propagation delay
100:interconnect bottleneck
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76:wave propagation speed
292:Latency (engineering)
229:operating temperature
211:asynchronous circuits
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447:Electronics concepts
403:Balch, Mark (2003).
145:to the carry output
70:is the distance and
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351:Networking Glossary
282:Contamination delay
166:digital electronics
380:All About Circuits
302:Transmission delay
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114:Propagation delay
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287:Delay calculation
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361:2010-11-09
332:2010-11-09
308:References
178:datasheets
174:logic gate
170:gate delay
131:full adder
51:Networking
37:networking
276:See also
207:glitches
120:NOT gate
257:physics
251:Physics
74:is the
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385:1 June
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