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SN74LVC1G123: Glitch-Free Power-Up Reset on Outputs

Prodigy 30 points

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Part Number: SN74LVC1G123

The datasheet mentions "Glitch-Free Power-Up Reset on Outputs", but I'm not finding a definition for this. 

Our design holds !A low.  B, !CLR, and VCC all come up together.  We're seeing inconsistent behavior at power-up (sometime see an output pulse generated, sometimes not) that I suspect is due to timing around this "glitch free power-up".

Thanks!