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Re: 5V vs. 3.3V signaling
I think IDT (www.idt.com) has a "bus switch" line,
these are 0 nS prop delay bi-dir switches that can
be used for 5-3 V translation. Don't know how
appropriate they might be for this app, though.
I think they have generic 5-3 interface app note
on their web site.
Ivor
At 11:27 AM 8/25/00 -0700, you wrote:
>I have a system that I need to design a adapter card for that uses 5V
>signaling but my adapter card PCI interface chip only supports 3.3V
>signaling. Someone suggested that I use a "translator" chip that takes
>3.3V PCI signals and converts them to 5V and vice versa (of course with
>virtually zero delay) but I doubt anything like that exists. The other
>possibility, although brute force, is to use a PCI-PCI bridge which
>supports both signaling standards. Anybody ever confront this problem?
>
>--
>Alex Horvath
>ahorvath@cisco.com
>Cisco Systems
>190 West Tasman Dr.
>San Jose, CA 95134
>Voice: 408-853-3289
>
>
><!doctype html public "-//w3c//dtd html 4.0 transitional//en">
><html>
>I have a system that I need to design a adapter card for that uses
>5V signaling but my adapter card PCI interface chip only supports 3.3V
>signaling. Someone suggested that I use a "translator" chip that takes
>3.3V PCI signals and converts them to 5V and vice versa (of course with
>virtually zero delay) but I doubt anything like that exists. The other
>possibility, although brute force, is to use a PCI-PCI bridge which supports
>both signaling standards. Anybody ever confront this problem?
><pre>--
>Alex Horvath
>ahorvath@cisco.com
>Cisco Systems
>190 West Tasman Dr.
>San Jose, CA 95134
>Voice: 408-853-3289</pre>
> </html>
>