MC10E111 Datasheet, PDF (1/5 Pages) ON Semiconductor – 1:9 DIFFERENTIAL CLOCK DRIVER

MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
1:9 Differential Clock Driver
The MC10E/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 else 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.
• Low Skew
• Guarateed Skew Spec
• Differential Design
• VBB Output
• Enable
• Extended 100E VEE Range of –4.2 to –5.46V
• 75kΩ Input Pulldown Resistors
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 empirical modeling 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.
PIN NAMES
Pin
Function
IN, IN
EN
Q0, Q0–Q8, Q8
VBB
Differential Input Pair
Enable
Differential Outputs
VBB Output
Q0 Q0 Q1 VCCO Q1 Q2 Q2
25 24 23 22 21 20 19
VEE 26
18
EN 27
17
IN 28
VCC ₁
IN 2
16
Pinout: 28-Lead PLCC ₁₅
(Top View)
14
VBB ³
NC 4
5
Q8
13
12
6 7 8 9 10 11
Q8 Q7 VCCO Q7 Q6 Q6
Q3
Q3
Q4
VCCO
Q4
Q5
Q5
5/95
© Motorola, Inc. 1996
2–1
MC10E111
MC100E111
1:9 DIFFERENTIAL
CLOCK DRIVER
FN SUFFIX
PLASTIC PACKAGE
CASE 776-02
LOGIC SYMBOL
Q0
Q0
Q1
Q1
Q2
Q2
Q3
Q3
IN
Q4
IN
Q4
Q5
EN
Q5
Q6
Q6
Q7
Q7
Q8
VBB
Q8
REV 3