- 积分
- 1738
- 兑换点
- 点
- 声望度
-
- 金钱
- 元
- 银行存款
- 元
- 贡献度
-
- 精华
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CMOS电路电源要求:
Other specifications that should be noted are the
maximum input rise and fall times. Figure 10 shows the
oscillations that may result from exceeding the 15 ms
maximum rise and fall time at VDD = 5.0 V, 5 ms at 10 V, or
4 ms at 15 V. As the voltage passes through the switching
threshold region with a slow rise time, any noise that is on
the input is amplified, and passed through to the output,
causing oscillations. The oscillation may have a low enough
frequency to cause succeeding stages to switch, giving
unexpected results. If input rise or fall times are expected to
exceed 15 ms at 5.0 V, 5 ms at 10 V, or 4 ms at 15 V,
Schmitt–trigger devices such as the MC14093B,
MC14584B, MC14106B, HC14, or HC132 are
recommended for squaring–up these slow transitions. |
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