SY10/100E111AE/LE Micrel Semiconductor, SY10/100E111AE/LE Datasheet

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SY10/100E111AE/LE

Manufacturer Part Number
SY10/100E111AE/LE
Description
Manufacturer
Micrel Semiconductor
Datasheet
FEATURES
5V and 3.3V power supply options
200ps part-to-part skew
50ps output-to-output skew
Differential design
V
Enable Input
Voltage and temperature compensated outputs
75K input pulldown resistors
Fully compatible with Motorola MC10/100E111
Available in 28-pin PLCC package
BLOCK DIAGRAM
BB
output
V
EN
IN
IN
BB
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
0
0
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
5V/3.3V 1:9 DIFFERENTIAL
CLOCK DRIVER (w/ENABLE)
1
drivers designed for clock distribution in mind. The SY10/
100E111AE/LE'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. An enable input is
also provided such that a logic HIGH disables the device by
forcing all Q outputs LOW and all Q outputs HIGH.
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.
be operated from a positive V
This allows the E111AE/LE to be used for high performance
clock distribution in +5V/+3.3V systems. Designers can
take advantage of the E111AE/LE'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 SY10/100E111AE/LE are low skew 1-to-9 differential
The E111AE/LE is specifically designed, modeled and
To ensure that the tight skew specification is met it is
The E111AE/LE, as with most other ECL devices, can
BB
output is used. The signal is fanned
CC
SY100E111AE/LE
supply in PECL mode.
SY10E111AE/LE
pd
ClockWorks™
Rev.: D
Rev. Date:
distributions from
Amendment: /0
October, 1998
FINAL

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SY10/100E111AE/LE Summary of contents

Page 1

... V BB 5V/3.3V 1:9 DIFFERENTIAL CLOCK DRIVER (w/ENABLE) DESCRIPTION The SY10/100E111AE/LE are low skew 1-to-9 differential drivers designed for clock distribution in mind. The SY10/ 100E111AE/LE'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 ELECTRICAL CHARACTERISTICS ...

Page 3

Micrel 3.3V PECL DC ELECTRICAL CHARACTERISTICS V = +3.0V to +3.8V GND CC EE Symbol Parameter Min. (2) V Output HIGH Voltage 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) Enable (4) Disable (5) t Within-Device Skew ...

Page 5

Micrel TIMING DIAGRAMS 50 Figure 1. Set-up Time PRODUCT ORDERING CODE 5V Ordering Package Operating Code Type SY10E111AEJC J28-1 Commercial SY10E111AEJCTR J28-1 Commercial SY100E111AEJC J28-1 Commercial SY100E111AEJCTR J28-1 Commercial 3.3V SY10E111LEJC ...

Page 6

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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