MC100EP111 Motorola, MC100EP111 Datasheet

MC100EP111

Manufacturer Part Number

MC100EP111

Description

LOW-VOLTAGE 1:10 DIFFERENTIAL ECL/PECL CLOCK DRIVER

Manufacturer

Motorola

Datasheet

1.MC100EP111.pdf (5 pages)

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MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

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Low-Voltage 1:10 Differential

ECL/PECL Clock Driver

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 V BB output is used. The selected signal is fanned out to 10 identical

differential outputs.

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 t pd distributions

from lot to lot. The net result is a dependable, guaranteed low skew

device.

both sides of the differential output are terminated into 50 , 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.

the EP111 to be used for high performance clock distribution in +3.3V or +2.5V systems. Designers can take advantage of the

EP111’s performance to distribute low skew clocks across the backplane or the board. In a PECL environment, series or

Thevenin line terminations are typically used as they require no additional power supplies. For more information on using PECL,

designers should refer to Motorola Application Note AN1406/D.

This document contains information on a product under development. Motorola reserves the right to change or

discontinue this product without notice.

2/97

Motorola, Inc. 1997

100ps Part–to–Part Skew

35ps Output–to–Output Skew

Differential Design

V BB Output

Voltage and Temperature Compensated Outputs

Low Voltage V EE Range of –2.375 to –3.8V

75k Input Pulldown Resistors

The MC100EP111 is a low skew 1–to–10 differential driver, designed

The EP111 is specifically designed, modeled and produced with low

To ensure that the tight skew specification is met it is necessary that

The MC100EP111, as with most other ECL devices, can be operated from a positive V CC supply in PECL mode. This allows

REV 0.1

ECL/PECL CLOCK DRIVER

MC100EP111

1:10 DIFFERENTIAL

32–LEAD TQFP PACKAGE

LOW–VOLTAGE

CASE 873A–02

FA SUFFIX

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MC100EP111 Summary of contents

Page 1

... The MC100EP111, as with most other ECL devices, can be operated from a positive V CC 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 take advantage of the EP111’ ...

Page 2

... CLK0, CLK0 1 CLK1, CLK1 CLK0 CLK0 CLK1 CLK1 CLK_SEL MOTOROLA Pinout: 32–Lead TQFP (Top View VCCO MC100EP111 VCCO VCC CLK0 CLK0 VBB LOGIC SYMBOL ...

Page 3

... Min Typ 400 400 100 100 100 1.5 1.5 1.5 500 500 200 200 200 3 MC100EP111 Typ Max Min Typ Max Unit –0.955 –0.880 –1.025 –0.955 –0.880 V –1.705 –1.620 –1.810 –1.705 –1.620 V – ...

Page 4

... MC100EP111 –T– DETAIL –Z– –AB– SEATING –AC– PLANE 0.10 (0.004 DETAIL AD MOTOROLA OUTLINE DIMENSIONS FA SUFFIX PLASTIC TQFP PACKAGE CASE 873A–02 ISSUE A 4X 0.20 (0.008) AB T– –U– ...

Page 5

... JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, 6F Seibu–Butsuryu–Center, 3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 81–3–3521–8315 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298 *MC100EP111/D* 5 MC100EP111 MC100EP111/D MOTOROLA ...

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