RE: [SI-LIST] : PECL TO LVPECL

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From: Ed Priest (Ed_Priest@pmc-sierra.com)
Date: Fri Apr 27 2001 - 09:53:06 PDT


You can always play the old bipolar trick

---->|---->|--- . Two diode drops on the outputs - if you parallel termination at the receiver - will level shift to the new level. Just work through the numbers to make sure you terminate to a value that guarantees current always flowing out of the emitter followers.

Going from 3.3 - 2.5 only requires one diode per output.

Ed

-----Original Message-----
From: Steinkogler, Gary [mailto:gsteinkogler@opticalsolutions.com]
Sent: Friday, April 27, 2001 6:53 AM
To: 'si-list@silab.eng.sun.com'
Subject: [SI-LIST] : PECL TO LVPECL

Anybody know of 5V PECL to 3.3V LVPECL Translators - single or dual
translator. I know ON Semi - MC100LVEL92 and Micrel - SY100EL92 make one,
but these are triple translators.

Gary

Gary Steinkogler
Optical Solutions
16305 36th Ave. North
Suite 300
Minneapolis, MN 55446-2698
Phone: (763) 268-3633
Fax: (763) 268-3301
Main: (763) 268-3300

email:gsteinkogler@opticalsolutions.com

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