RE: [SI-LIST] : LVTTL Drivers vs. LS

Ammar, Ramzi (r-ammar@ti.com)
Mon, 19 Jul 1999 10:59:42 -0500

Chris, you should be fine using the LVT family. There should not be any
problem or issue with that. This family is also 5v tolerent.

regards,
Ramzi Ammar
Texas Instruments

-----Original Message-----
From: Chris Bobek [mailto:cbobek@cadence.com]
Sent: Monday, July 19, 1999 9:33 AM
To: si-list@silab.eng.sun.com
Subject: [SI-LIST] : LVTTL Drivers vs. LS

I am doing a 6U VME master/slave card design. There are several
reccomendations for the transceivers and drivers. All of them happen to be
5V. Unfortunately, this is NOT an option since we can't afford the several
watts (~3W) they will potentially burn. So, I've opted for 3.3V LVTH family
from TI.

As far as I can tell, these parts meet all of the same xcvr specifications
as written in the VITA spec.

Am I correct to assume that as long as the specs are met, this xcvr should
work? Or, are there some complications that result just because it's
powered with 3.3V?

Thanks,

Chris

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