[SI-LIST] : Re:grond bounce evaluation???

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From: adeel.ahmad@st.com
Date: Thu Jan 25 2001 - 08:08:14 PST


hello Rich!
thanks for the response...
yes, normally we see effect of gnd bounce on output of an output buffer
itself since input buffer at that time wont be switching

**yet this case dosnt hold in case of programmable IOs (input/outputs)
(that i should have mentioned)where,suppose,3 of the 4 IOs sharing common
gnd work in output mode but the 4th one in input mode.then for eg a bad
high to input buffer may not be taken high as long as gnd is bounced.
isnt it so ??

** i was going thru specs that was given for packages the mutual
inductance(Lm).
-but what i didnt get is whether this Lm refers to the adjacent pins only
or the effective Lm with all pins being considered,
-then what would coupling coeff indicate k=(L1*L2)^0.5 with respect to
L1?is it the averaged k or ....??what is L2 here??

**what about mutual capacitance mentioned in specs??

regards
ADEEL

**Rich may i have your mail id?
 

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