SY10/100E111A/L Micrel Semiconductor, SY10/100E111A/L Datasheet

SY10/100E111A/L

Manufacturer Part Number

SY10/100E111A/L

Description

Manufacturer

Micrel Semiconductor

Datasheet

1.SY10100E111AL.pdf (5 pages)

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FEATURES

5V and 3.3V power supply options

200ps part-to-part skew

50ps output-to-output skew

Differential design

Voltage and temperature compensated outputs

75K input pulldown resistors

Fully compatible with Motorola MC100LVE111

Available in 28-pin PLCC package

BLOCK DIAGRAM

output

5V/3.3V 1:9 DIFFERENTIAL

CLOCK DRIVER (w/o ENABLE)

driver designed for clock distribution in mind. The SY10/

100E111A/L's function and performance are similar to the

popular SY10/100E111, with the improvement of lower

jitter and the added feature of low voltage operation. It

accepts one signal input, which can be either differential or

single-ended if the V

out to 9 identical differential outputs.

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 t

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

skew device.

necessary that both sides of the differential output are

terminated into 50 , even if only one side is being used. In

most applications, all nine differential pairs will be used and

therefore terminated. In the case where fewer that nine

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.

operated from a positive V

allows the E111A/L to be used for high performance clock

distribution in +5V/+3.3V systems. Designers can take

advantage of the E111A/L'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 systems incorporating GTL, parallel termination offers

the lowest power by taking advantage of the 1.2V supply as

terminating voltage.

DESCRIPTION

The SY10/100E111A/L are low skew 1-to-9 differential

The E111A/L are specifically designed, modeled and

To ensure that the tight skew specification is met it is

The E111A/L, as with most other ECL devices, can be

output is used. The signal is fanned

supply in PECL mode. This

SY100E111A/L

ClockWorks™

SY10E111A/L

Rev.: F

Rev. Date:

distributions from

Amendment: /0

October, 1998

FINAL

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SY10/100E111A/L Summary of contents

Page 1

... V BB 5V/3.3V 1:9 DIFFERENTIAL CLOCK DRIVER (w/o ENABLE) DESCRIPTION The SY10/100E111A/L are low skew 1-to-9 differential driver designed for clock distribution in mind. The SY10/ 100E111A/L's function and performance are similar to the popular SY10/100E111, with the improvement of lower jitter and the added feature of low voltage operation. It ...

Page 2

Micrel PIN CONFIGURATION PLCC V CC TOP VIEW 1 J28 ECL DC ...

Page 3

Micrel 3.3V PECL DC ELECTRICAL CHARACTERISTICS V = +3.0V to +3.8V GND CC EE Symbol Parameter Min. V Output HIGH Voltage (2) OH 10EL 2220 100EL 2215 V Output LOW Voltage (2) OL 10EL 1350 100EL 1470 V ...

Page 4

Micrel AC ELECTRICAL CHARACTERISTICS (Min (Max.); Symbol Parameter t Propagation Delay to Output PLH ( (differential) PHL (3) IN (single-ended) (4) t Within-Device Skew skew Part-to-Part Skew (Diff.) ...

Page 5

Micrel 28 LEAD PLCC (J28-1) MICREL-SYNERGY 3250 SCOTT BOULEVARD SANTA CLARA CA 95054 USA + 1 (408) 980-9191 TEL This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for ...

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