Re: [SI-LIST] : Input switching threshold & CPCI

About this list Date view Thread view Subject view Author view

From: Matt (boomer) Russell ([email protected])
Date: Thu Jan 06 2000 - 11:36:57 PST


Doesn't the 5V spec also have a clamp requirement?
It is just a clamp to 5V.

Just curious about how many preople have seen high side
ringing problems with 5V tolerant universal buffers in
a 5V system becuase it drives to 3.3 but the bus clamps at 5V.

matt

>
> If it has a way to not clamp to 3.3V on a 5V bus, AND to clamp to 3.3V on a
> 3.3V bus, then it's OK, and I guess it should have TWO different IBIS spec
> sheets covering the two cases.
>
> But if it is simply 5V-tolerant, all the time, then it can't be used on a
> 3.3V bus. I thought that was the case with this part (with its VCC5REF pin
> ... unless that pin is part of an adjustable clamp and is connected to the
> PCI bus's +Vi/o pins).
>
> **** To unsubscribe from si-list: send e-mail to [email protected]. In the BODY of message put: UNSUBSCRIBE si-list, for more help, put HELP.
> si-list archives are accessible at http://www.qsl.net/wb6tpu/si-list
> ****


**** To unsubscribe from si-list: send e-mail to [email protected]. In the BODY of message put: UNSUBSCRIBE si-list, for more help, put HELP.
si-list archives are accessible at http://www.qsl.net/wb6tpu/si-list
****


About this list Date view Thread view Subject view Author view

This archive was generated by hypermail 2b29 : Thu Apr 20 2000 - 11:34:28 PDT