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SN74LV123A: Design clarification

Devata Dhyana Saketh gupta
Prodigy 10 points
Part Number: SN74LV123A

In sn74lv123A datasheet their capacitor graph is not mentioned properly.so there is a little confusion while designing it can you please help me to design.

And thee is not proper formula for SN74lv123a to select Rext and Cext.

  • 0
    Guru 270760 points

    In figures 1 and 3, the "µ" is shown in the wrong font as "m". The Y axes actually use µs or µF units.

    For how to choose Rext/Cext, see section 10.2.1 of the datasheet. There are multiple possible combinations or R and C for a desired pulse duration; choose any values that are available, and that are not too extreme (see figures 12…14 for reasonable values). In general, you choose C first because there are not many values available.