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VIH overshoot: VIH,max = VDDQ + 1.2V for a pulse width ≤ 3ns, and the pulse width cannot
( @% B4 n8 P4 b8 Z# Y: vbe greater than one-third of the cycle rate. VIL undershoot: VIL,min = –1.2V for a pulse" z; n$ L* X( b; H7 p
width ≤3ns, and the pulse width cannot be greater than one-third of the cycle rate.
" H. V' n6 a2 S" p/ q/ @$ r+ I7 `6 Y; h
大家是如何理解这段话的，比如供电电压为3.3V，是不是只要过冲电压小于4.5V，下冲电压大于-1.2V就可以了，我不大理解for a pulse width ≤ 3ns, and the pulse width cannot be greater than one-third of the cycle rate ，这句话是说的啥意思呢？？？ |
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发表于 2012-10-26 18:49
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