time interval required for the trailing edge of a waveform to change between two defined levels which may be either the logic levels VOH and VOL [being at 90 % and 10 %, respectively, of the maximum amplitude (equalling VHI – VLO)], or any other ratio as defined in the detail specification where VOL is the low level output voltage VOH is the high level output voltage VHI is the upper flat voltage of the pulse waveform VLO is the low flat voltage of the pulse waveform X Figure 17 – Characteristics of an output waveform
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