Re: [SI-LIST] : LVDS-to-PECL and vice versa

john lipsius (jlipsius@cyras.com)
Thu, 23 Sep 1999 14:53:26 -0700

See Motorola book DL140 "Motorola High Performance ECL Data",
p.5-88, et al.

LVDS to LVPECL & PECL: Fig. 3, 9, 12.
vice versa also, in different figures

Use Fig. 3 if LVDS source is across a backplane (ie: because source is on a
different board on a separate dc supply, hot swap ability, rcvr doesn't have
Vcmr to match LVDS), or use Fig.9 - dc coupled - if on same board and
using a rcvr w/ compatible Vcmr inputs. The Fig.3 1k/100k pull down/up
aren't needed if rcvr inputs have an equivalent network, like the LVEL17.

Lyke James Civ AFRL/VSSE wrote:

> Is there a simple way to interface between LVDS and PECL?
> jim
>
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--
Thanks,
John Lipsius
Member Technical Staff
Cyras Systems, Inc.
46832 Lakeview Blvd.
Fremont, CA 94538
510-623-6631

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