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楼主 |
发表于 2010-9-6 10:02:28
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频率1M。但是这种555电路可能不能达到这么高的频率。
there are quite a few high-speed varients of the 555. ALD555, for example, goes all the way to 2Mhz. you pay dearly for that.
the most impressive 555 timer I have used is LMC555, a cmos 555 by national. I works down to 0.8v, and up to 3Mhz, and very little idle current.
and it is incredibly cheap, . |
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