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<blockquote type="cite" cite>I just looked at a table comparing 39<br>
different varieties of 4046, and the Motorola<br>
MM74HC4046 variants have an output transition<br>
time three times faster than everything else.<br>
<br>
I remember somethng that was made (surface mount)<br>
and the 4046 mattered, but I can't remember why.</blockquote>
<blockquote type="cite" cite><br></blockquote>
<blockquote type="cite" cite>paul perry (Frostwave analog fx)
Melbourne Australia</blockquote>
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<div>Thanks to all that replied.</div>
<div>I wouldn't mind this chart above either :)</div>
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<div>Here's something interesting that I found on someone's website
via Google:</div>
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<blockquote type="cite" cite>
<blockquote type="cite" cite><font color="#000000">Take care about
which 4046 chips you use for U1 and U3. The Phillips 74HCT4046 chips
(formerly sold by Radio Shack) are fine. So are CD74HC4046 chips made
by Harris or T.I. Do<b> not</b> use chips made by Fairchild and do<b>
not</b> use CD4046 chips; both have a different design and will not
work in this circuit.</font></blockquote>
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<div>Keep in mind that I'm speaking about the same chips, but from
different manufacturers.</div>
<div>MC14046's from Motorola seem to be different than CD4046's from
Fairchild, for example.</div>
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<div>Regards,<br>
Kevin Lightner<br>
<br>
Myself: http://www.synthfool.com<br>
Service and sales: http://www.moogmusic.com/service.php<br>
Sales: http://www.cluboftheknobs.com</div>
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