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SN74AHC16374 pulse duration violation

Other Parts Discussed in Thread: SN74AHC16374

I'm using SN74AHC16374 in a new design. In the application there is a risk (based on min/max timing of the logic driving the device) that a runt clock pulse of less than the minimum specified (5.5ns) would be seen. I would not expect to capture data on that runt pulse and there would be several hundred clock pulses which exceed the minimum pulse duration following it before I wanted to capture data.

Is the effect of these runt pulses known? i.e. does it just make the data output indeterminate and can I be sure that the subsequent clock edges will capture data?

Thanks, Richard.

 

  • More then likely you will still get data on the runt pulse depending on the width. The spec is under worst case conditions of temp voltage and process.  If it does not catch the runt pulse it will catch the next legal pulse.  A runt pulse will not affect the operation in any way it will just not recognize it.