Re: [SI-LIST] : Standard tolerance for 1.8V supplies

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From: D. C. Sessions (si-list@lumbercartel.com)
Date: Mon Apr 30 2001 - 07:14:06 PDT


On Monday 30 April 2001 02:14, Suman Mamidi wrote:
> Hi All,
> I had always thought +/- 5% was standard, which I guess is not.
> In such a case, what should be the tolerances on 5V,2.5V and 3.3V
> supply voltages.
> regards,
> Suman

5.0 is 4.75 to 5.25, as expected.
3.3 is 3.0 to 3.6
2.5 is 2.3 to 2.7
1.8 is 1.65 to 1.95

I forget the rest offhand, but they're available from http://www.jedec.org

> -----Original Message-----
> From: D. C. Sessions [mailto:si-list@lumbercartel.com]
> Sent: Tuesday, April 24, 2001 11:33 PM
> To: si-list@silab.eng.sun.com
> Subject: Re: [SI-LIST] : Standard tolerance for 1.8V supplies
>
>
> On Monday 23 April 2001 10:19, Khalid Ansari wrote:
> > Hi all,
> >
> > What is the standard practice in the industry for tolerance on 1.8V
> > supply voltages. Does + 5% work or does it need to be pushed
> > out further. I need this information in regards to some testing that
> > I am currently doing.
>
> The official range is 1.65 to 1.95 volts.
> (The rounding on 5% is getting silly.)
>
> --
> | The race is not always to the swift, nor the battle to the strong. |
> | Because the slow, feeble old codgers like me cheat. |
> +--------------- D. C. Sessions <dcs@lumbercartel.com> --------------+
>
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-- 
| The race is not always to the swift, nor the battle to the strong. |
| Because the slow, feeble old codgers like me cheat.                |
+--------------- D. C. Sessions <dcs@lumbercartel.com> --------------+

**** To unsubscribe from si-list or si-list-digest: send e-mail to majordomo@silab.eng.sun.com. In the BODY of message put: UNSUBSCRIBE si-list or UNSUBSCRIBE si-list-digest, for more help, put HELP. si-list archives are accessible at http://www.qsl.net/wb6tpu ****


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