 | This articlerelies largely or entirely on asingle source. Relevant discussion may be found on thetalk page. Please helpimprove this article byintroducing citations to additional sources. Find sources: "Runt pulse" – news ·newspapers ·books ·scholar ·JSTOR(July 2024) |
Indigital circuits, arunt pulse is a narrowpulse that, due to non-zerorise andfall times of the signal, does not reach a valid high or low level. A runt pulse may occur when switching betweenasynchronousclocks; or as the result of arace condition in which a signal takes two separate paths through a circuit, which may have different delays, and is then recombined to form aglitch; or when the output of aflip-flop becomesmetastable.
Someoscilloscopes provide a method for triggering on runt pulses. The oscilloscope triggers when the signal crosses one of two voltagethresholds, but not both.[1]