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Discussion in 'Electronic Design' started by Andrew Holme, Mar 11, 2010.

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  1. Andrew Holme

    Andrew Holme Guest

    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?

  2. Andrew Holme

    Andrew Holme Guest

    OnSemi do a MC100LVEL17 which is 3V3 PECL levels.

    Their PECL data sheets show internal input pull downs to VEE and talk about
    inputs having default states if left open. This sounds like it's OK for the
    input to go all the way down to VEE; but then the DC characteristics give
    min/max VIH/VIL that are strictly PECL spec. They also have an app note
    AN1503-D which gives Spice info including input / output internal schematics
    which look like they'd be totally screwed by rail-to-rail inputs.
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