[SI-LIST] : 5V PECL vs 3.3V PECL - VTT???

From: Steeve Gaudreault ([email protected])
Date: Fri May 26 2000 - 04:25:32 PDT

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Hi all,

Something confused me lately and I don't find any information that explains
this....I need some help.

For a 5V PECL driver, its VTT is set at 3V (Vcc - 2V is the rule). Does the
same rule applies for 3.3V PECL Drivers ie VTT = (3.3V - 2V) = 1.3V ????

I tend to set VTT around the middle point between VOH and VOL, but for 3.3V
PECL VTT its quite different when I do the math.

any help would be appreciated.

thanks,

Steeve Gaudreault
Nortel Networks

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• Next message: Larry Miller: "RE: [SI-LIST] : RE: Split Plane"
• Previous message: Doug McKean: "Re: [SI-LIST] : RE: Split Plane"
• Next in thread: Peterson, James F (FL51): "RE: [SI-LIST] : 5V PECL vs 3.3V PECL - VTT???"
• Maybe reply: Peterson, James F (FL51): "RE: [SI-LIST] : 5V PECL vs 3.3V PECL - VTT???"
• Maybe reply: Steeve Gaudreault: "RE: [SI-LIST] : 5V PECL vs 3.3V PECL - VTT???"

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