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	<title>Objective Development Forums</title>
	
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	<updated>2008-04-22T03:36:25+02:00</updated>

	<author><name><![CDATA[Objective Development Forums]]></name></author>
	<id>https://forums.obdev.at/app.php/feed/topic/1392</id>

		<entry>
		<author><name><![CDATA[Phobbes]]></name></author>
		<updated>2008-04-22T03:36:25+02:00</updated>

		<published>2008-04-22T03:36:25+02:00</published>
		<id>https://forums.obdev.at/viewtopic.php?t=1392&amp;p=5135#p5135</id>
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		<title type="html"><![CDATA[New idea for 5V - 3.3V translation]]></title>

		
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I don't have any fast enough zeners on hand, and it seems like a suboptimal solution anyways, so I tried this out: I used a standard 4050 CMOS buffer powered with a adjustable regulator at 3.3V.<br /><br />It doesn't seem to be recognized by the host computer, though. I used a signal generator to run a 1.5MHz 0-5V square wave into it and the output was a pretty clean 0-3.3V square wave, but delayed by about 60ns. Do you think this is too much delay for proper communication? Am I doing something else that's dumb?<br /><br /><img src="http://www.columbia.edu/~sfr2105/schem2.png" class="postimage" alt="Image" /><p>Statistics: Posted by <a href="https://forums.obdev.at/memberlist.php?mode=viewprofile&amp;u=1029">Phobbes</a> — Tue Apr 22, 2008 3:36 am</p><hr />
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