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SY100E111A Schematic ( PDF Datasheet ) - Micrel Semiconductor

Teilenummer SY100E111A
Beschreibung 1:9 DIFFERENTIAL CLOCK DRIVER
Hersteller Micrel Semiconductor
Logo Micrel Semiconductor Logo 




Gesamt 6 Seiten
SY100E111A Datasheet, Funktion
Micrel, Inc.
5V/3.3V 1:9 DIFFERENTIAL
CLOCK DRIVER (w/o ENABLE)
Precison Edge®
PrecisioSnSYY1E0100dEEg11e1111®AA//LL
SY10E111A/L
SY100E111A/L
FEATURES
s 5V and 3.3V power supply options
s 200ps part-to-part skew
Precision Edge®
s 50ps output-to-output skew
s Differential design
DESCRIPTION
s VBB output
The SY10/100E111A/L are low skew 1-to-9 differential
s Voltage and temperature compensated outputs
driver designed for clock distribution in mind. The
s 75Kinput pulldown resistors
s Fully compatible with Motorola MC100LVE111
s Available in 28-pin PLCC package
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-
BLOCK DIAGRAM
ended if the VBB output is used. The signal is fanned out to 9
identical differential outputs.
The E111A/L are specifically designed, modeled and
produced with low skew as the key goal. Optimal design and
Q0 layout serve to minimize gate to gate skew within a device, and
Q0 empirical modeling is used to determine process control limits
that ensure consistent t distributions from lot to lot. The net
Q1
pd
result is a dependable, guaranteed low skew device.
Q1 To ensure that the tight skew specification is met it is
Q2 necessary that both sides of the differential output are
Q2 www.DataSheette4Ur.cmominated into 50, even if only one side is being used. In
Q3 most applications, all nine differential pairs will be used and
Q3 therefore terminated. In the case where fewer that nine pairs
are used, it is necessary to terminate at least the output pairs
IN Q4 on the same package side as the pair(s) being used on that
IN Q4 side, in order to maintain minimum skew. Failure to do this will
Q5 result in small degradations of propagation delay (on the order
Q5 of 10-20ps) of the output(s) being used which, while not being
catastrophic to most designs, will mean a loss of skew margin.
Q6
The E111A/L, as with most other ECL devices, can be
Q6
Q7
operated from a positive V supply in PECL mode. This
CC
allows the E111A/L to be used for high performance clock
Q7 distribution in +5V/+3.3V systems. Designers can take
Q8 advantage of the E111A/L's performance to distribute low
VBB Q8 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
PIN NAMES
terminating voltage.
Pin
IN, IN
Q0, Q0 — Q8, Q8
VBB
VCCO
Function
Differential Input Pair
Differential Outputs
VBB Output
VCC to Output
Precision Edge is a registered trademark of Micrel, Inc.
M9999-032006
[email protected] or (408) 955-1690
1
Rev.: J
Amendment: /0
Rev. Date: March 2006






SY100E111A Datasheet, Funktion
Micrel, Inc.
28-PIN PLCC (J28-1)
Precison Edge®
SY10E111A/L
SY100E111A/L
Package Notes:
Note 1. Package meets Level 1 moisture sensitivity.
Rev. 03
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB http://www.micrel.com
The information furnished by Micrel in this datasheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use.
Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can
reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into
the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchasers
use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchasers own risk and Purchaser agrees to fully indemnify
Micrel for any damages resulting from such use or sale.
© 2006 Micrel, Incorporated.
M9999-032006
[email protected] or (408) 955-1690
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