The MC100LVEP111 is a low skew 1–to–10 differential driver,
designed with clock distribution in mind, accepting two clock sources into
an input multiplexer. The LVECL/LVPECL input signals can be either
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differential or single–ended (if the V
output is used). HSTL inputs can
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be used when the LVEP111 is operating under LVPECL conditions.
The LVEP111 specifically guarantees low output–to–output skew.
Optimal design, layout, and processing minimize skew within a device and
from lot to lot.
To ensure that the tight skew specification is realized, both sides of
any differential output need to be terminated identically into 50 even
if only one side is being used. When fewer than all ten pairs are used,
identically terminate all the output pairs on the same package side
whether used or unused. If no outputs on a single side are used, then
leave these outputs open (unterminated). This will maintain minimum
output skew. Failure to do this will result in a 10–20ps loss of skew
margin (propagation delay) in the output(s) in use.
32–LEAD TQFP
FA SUFFIX
CASE 873A
MARKING DIAGRAM*
A
= Assembly Location
MC100
LVEP111
WL = Wafer Lot
YY = Year
WW = Work Week
The MC100LVEP111, as with most other LVECL devices, can be
AWLYYWW
operated from a positive V
supply in LVPECL mode. This allows
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the LVEP111 to be used for high performance clock distribution in
+3.3V or +2.5V systems. Single ended input operation is limited to a
32
1
V
CC
≥ 3.0V in LVPECL mode, or V ≤ –3.0V in LVECL mode.
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*For additional information, see Application Note
AND8002/D
Designers can take advantage of the LVEP111’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 more
information on using LVPECL, designers should refer to Application
Note AN1406/D.
ORDERING INFORMATION
Device
Package
Shipping
• 100ps Part–to–Part Skew
• 25ps Output–to–Output Skew
• Differential Design
MC100LVEP111FA
TQFP
250 Units/Tray
MC100LVEP111FAR2 TQFP
2000 Tape & Reel
• V Output
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• 430ps Typical Propagation Delay
• High Bandwidth to 1.5 Ghz Typical
• LVPECL and HSTL mode: +2.375V to +3.8V V
with V = 0V
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• LVECL mode: 0V V
with V = –2.375V to –3.8V
CC
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• 75kΩ Internal Input Pulldown Resistors on CLKs, Pull up &
Pulldown resistors on CLKs
• ESD Protection: >2KV HBM; >100V MM
• Moisture Sensitivity Level 2
For Additional Information, See Application Note AND8003/D
• Flammability Rating: UL–94 code V–0 @ 1/8”, Oxygen Index 28 to 34
• Transistor Count = 602 devices
Semiconductor Components Industries, LLC, 1999
1
Publication Order Number:
March, 2000 – Rev. 2
MC100LVEP111/D