Quad LVDS to LVPECL?
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From: Andrew Holme on 11 Mar 2010 15:45 Does such a chip exist? I can't find it. MAX9375 or PTN3310 = Single LVDS to LVPECL tb5d1m = Quad LVTTL to LVPECL MC10H352-D = Quad CMOS to PECL sn65lvelt22 = Dual LVTTL to LVPECL MC100EPT622-D (obsolete) = 10-bit LVTTL to single-ended LVPECL and I only want single-ended LVPECL to drive 4 data inputs on a MC100EP142 Any suggestions? TIA
From: Jim Thompson on 11 Mar 2010 16:05 On Thu, 11 Mar 2010 20:45:17 -0000, "Andrew Holme" <ah(a)nospam.com> wrote: >Does such a chip exist? I can't find it. > >MAX9375 or PTN3310 = Single LVDS to LVPECL >tb5d1m = Quad LVTTL to LVPECL >MC10H352-D = Quad CMOS to PECL >sn65lvelt22 = Dual LVTTL to LVPECL >MC100EPT622-D (obsolete) = 10-bit LVTTL to single-ended LVPECL and I only >want single-ended LVPECL to drive 4 data inputs on a MC100EP142 > >Any suggestions? > >TIA > See page 3... www.pericom.com/pdf/applications/AN047.pdf Looks like all it takes is an R-network. Also see page 3... www.fairchildsemi.com/an/AN/AN-5029.pdf ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | The only thing bipartisan in this country is hypocrisy
From: John Larkin on 11 Mar 2010 17:51
On Thu, 11 Mar 2010 20:45:17 -0000, "Andrew Holme" <ah(a)nospam.com> wrote: >Does such a chip exist? I can't find it. > >MAX9375 or PTN3310 = Single LVDS to LVPECL >tb5d1m = Quad LVTTL to LVPECL >MC10H352-D = Quad CMOS to PECL >sn65lvelt22 = Dual LVTTL to LVPECL >MC100EPT622-D (obsolete) = 10-bit LVTTL to single-ended LVPECL and I only >want single-ended LVPECL to drive 4 data inputs on a MC100EP142 > >Any suggestions? > >TIA > You could use something like a 10EP17, a quad ecl diff-in, diff-out buffer. Its inputs are (probably...check me on this) LVDS compatible, and its outputs are ECL. If your LVDS common-mode voltage is too low to meet the common-mode input specs of the EP17, you can power it from +3.3 and -2 or something like that. It's good to 5.5 volts. John |