MC100EP14
3.3V / 5Vꢀ1:5 Differential
ECL/PECL/HSTL Clock Driver
The MC100EP14 is a low skew 1−to−5 differential driver, designed with
clock distribution in mind, accepting two clock sources into an input
multiplexer. The ECL/PECL input signals can be either differential or
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single−ended (if the V output is used). HSTL inputs can be used when
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the LVEP14 is operating under PECL conditions.
The EP14 specifically guarantees low output−to−output skew. Optimal
design, layout, and processing minimize skew within a device and from
device to device.
To ensure that the tight skew specification is realized, both sides of
any differential output need to be terminated even if only one output is
being used. If an output pair is unused, both outputs may be left open
(unterminated) without affecting skew.
The common enable (EN) is synchronous, outputs are enabled/
disabled in the LOW state. This avoids a runt clock pulse when the
device is enabled/disabled as can happen with an asynchronous
control. The internal flip flop is clocked on the falling edge of the input
clock, therefore all associated specification limits are referenced to the
negative edge of the clock input.
TSSOP−20
DT SUFFIX
CASE 948E
MARKING DIAGRAM*
20
The MC100EP14, as with most other ECL devices, can be operated
from a positive V supply in PECL mode. This allows the EP14 to be
CC
100
used for high performance clock distribution in 5.0 V systems.
Designers can take advantage of the EP14’s performance to distribute
low skew clocks across the backplane or the board.
EP14
ALYW
1
• 400 ps Typical Propagation Delay
• 100 ps Device−to−Device Skew
• 25 ps Within Device Skew
A
L
Y
= Assembly Location
= Wafer Lot
= Year
W
= Work Week
• Maximum Frequency > 2 GHz Typical
• The 100 Series Contains Temperature Compensation
• PECL and HSTL Mode:
*For additional marking information, refer to
Application Note AND8002/D.
V
CC
= 3.0 V to 5.5 V with V = 0 V
EE
• NECL Mode:
= 0 V with V = −3.0 V to −5.5 V
ORDERING INFORMATION
See detailed ordering and shipping information in the package
V
CC
EE
dimensions section on page 6 of this data sheet.
• Open Input Default State
• These are Pb−Free Devices
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
Semiconductor Components Industries, LLC, 2004
1
Publication Order Number:
June, 2004 − Rev. 3
MC100EP14/D