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MC100EP111

Motorola
Part Number MC100EP111
Manufacturer Motorola
Description LOW-VOLTAGE 1:10 DIFFERENTIAL ECL/PECL CLOCK DRIVER
Published Apr 26, 2005
Detailed Description MOTOROLA SEMICONDUCTOR TECHNICAL DATA Product Preview Low-Voltage 1:10 Differential ECL/PECL Clock Driver The MC100EP...
Datasheet PDF File MC100EP111 PDF File

MC100EP111
MC100EP111

Overview
MOTOROLA SEMICONDUCTOR TECHNICAL DATA Product Preview Low-Voltage 1:10 Differential ECL/PECL Clock Driver The MC100EP111 is a low skew 1–to–10 differential driver, designed with clock distribution in mind.
It accepts two clock sources into an input multiplexer.
The input signals can be either differential or single–ended if the VBB output is used.
The selected signal is fanned out to 10 identical differential outputs.
MC100EP111 • • • • • • • LOW–VOLTAGE 1:10 DIFFERENTIAL ECL/PECL CLOCK DRIVER 100ps Part–to–Part Skew 35ps Output–to–Output Skew Differential Design VBB Output Voltage and Temperature Compensated Outputs Low Voltage VEE Range of –2.
375 to –3.
8V 75kΩ Input Pulldown Resistors The EP111 is specifically designed, modeled and produced with low skew as the key goal.
Optimal design and layout serve to minimize gate– to–gate skew within a device, and empirical modeling is used to determine process control limits that ensure consistent tpd distributions from lot to lot.
The net result is a dependable, guaranteed low skew device.
To ensure that the tight skew specification is met it is necessary that both sides of the differential output are terminated into 50Ω, even if only one side is being used.
In most applications, all ten differential pairs will be used and therefore terminated.
In the case where fewer than ten pairs are used, it is necessary to terminate at least the output pairs on the same package side as the pair(s) being used on that side, in order to maintain minimum skew.
Failure to do this will result in small degradations of propagation delay (on the order of 10–20ps) of the output(s) being used which, while not being catastrophic to most designs, will mean a loss of skew margin.
FA SUFFIX 32–LEAD TQFP PACKAGE CASE 873A–02 The MC100EP111, as with most other ECL devices, can be operated from a positive VCC supply in PECL mode.
This allows the EP111 to be used for high performance clock distribution in +3.
3V or +2.
5V systems.
Designers can ...


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