I would like to ask you following questions about undershoot/overshoot specifications of AHCT14.
1) Could you tell me the actual specification of undershoot/overshoot voltage?
My customer has evaluated AHCT14 with connecting "pin4 - pin5" and "pin8 - pin11.
Then the customer observed undersoot voltage, -0.72V @pin5 and -0.92V @pin11.
Is this undershoot OK?
And is there any problems about this connection (pin4 - pin5, pin8 - pin11)?
2) Do you have a guideline to design PCB pattern? (length, width, damping register, etc)
This time, the pattern design is as below.
- "pin4 - pin5" : length 5mm, width 0.2mm
- "pin8 - pin11" : length 8mm, width 0.2mm
Thank you for your support.