SK100E111(2001) 查看數據表（PDF） - Semtech Corporation
零件编号
产品描述 (功能)
生产厂家
SK100E111 Datasheet PDF : 6 Pages
| |||
HHIIGGHH--PPEERR..OORRMMAANNCCEE PPRROODDUUCCTTSS
Description
.eatures
SK10/100E111
1:9 Differential
Clock Driver
PRELIMINARY
The SK10E/100E111 is a low skew 1-to-9 differential
driver designed with clock distribution in mind. It accepts
one signal input which can be either differential or single-
ended if the VBB output is used. The signal is fanned
out to 9 identical differential outputs. An enable input
is also provided. A HIGH disables the device by forcing
all Q outputs LOW and all Q* outputs HIGH.
The device 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-
device, and characterization 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 nine differential pairs will be
used and therefore terminated. In the case where fewer
than nine pairs are used, it is necessary to terminate at
least the output pairs on the same package side (i.e.
sharing the same VCCO) 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.
• Low Skew
• Guaranteed Skew Spec
• Differential Design
• VBB Output
• Enable Input
• Extended 100E VEE Range of –4.2 to –5.5V
• 75KΩ Internal Input Pulldown Resistors
• Fully Compatible with MC10E111 and
MC100E111
• Specified Over Industrial Temperature Range:
–40oC to 85oC
• ESD Protection of >4000V
• Available in 28-pin PLCC Package
.unctional Block Diagram
Q0
Q0*
Q1
Q1*
Q2
Q2*
Q3
Q3*
Q4
Q4*
IN
IN*
Q5
Q5*
EN*
Q6
Q6*
Q7
Q7*
VBB
Q8
Q8*
Revision 1 /.ebruary 13, 2001
1
www.semtech.com
Share Link: 