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Micrel Semiconductor
Micrel Semiconductor

SY89540U Datasheet Preview

SY89540U Datasheet

Precision Low Jitter 4x4 LVDS Crosspoint Switch

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SY89540U pdf
SY89540U
Precision Low Jitter 4x4 LVDS Crosspoint
Switch with Internal Termination
General Description
The SY89540U is a low-jitter, low skew, high-speed
4x4 crosspoint switch optimized for precision
telecom and enterprise server/storage distribution
applications. The SY89540U guarantees data-rates
up to 3.2Gbps over temperature and voltage.
The SY89540U differential input includes Micrel’s
unique, 3-pin input termination architecture that
directly interfaces to any differential signal (AC or
DC-coupled) as small as 100mV (200mVpp) without
any level shifting or termination resistor networks in
Features
Precision Edge®
• Provides crosspoint switching between any input
pairs to any output pair
• Patent pending, channel-to-channel isolation
design provides superior crosstalk performance
• Guaranteed AC performance over temperature
and voltage:
the signal path. The LVDS compatible outputs
• DC-to-3.2Gbps throughput
maintain extremely fast rise/fall times guaranteed to
– <480ps propagation delay
be less than 120ps.
– <120ps rise/fall time
The SY89540U features a patent-pending isolation
design that significantly improves on channel-to-
channel crosstalk performance.
– <30ps output-to-output skew
• Ultra-low jitter design:
The SY89540U operates from a 2.5V ±5% supply
and is guaranteed over the full industrial
– <1psRMS random jitter
– <10psPP deterministic jitter
temperature
range
(–40°C
to
+85°C).
www.DataSheet4U.com
The
<10psPP
total
jitter
(clock)
SY89540U is part of Micrel’s high-speed, Precision
Edge® product line.
– <0.7psRMS crosstalk induced jitter
• Patent pending 50 input termination, extended
All support documentation can be found on Micrel’s
CMVR, and VT pin accepts DC- and AC-coupled
web site at www.micrel.com.
differential inputs
• 350mV LVDS output swing
Typical Performance
• Power supply 2.5V ±5%
• –40°C to +85°C temperature range
2.5Gbps Output
• Available in 44-pin (7mm x 7mm) MLF™ package
• Pb-Free Green package
TIME (100ps/div.)
Applications
• All SONET/SDH channel select applications
• All Fibre Channel multi-channel select
applications
• All Gigabit Ethernet multi-channel select
applications
Precision Edge is a registered trademark of Micrel, Inc.
MicroLeadFrame and MLF are trademarks of Amkor Technology, Inc.
April 2005
M9999-042505
hbwhelp@micrel.com or (408) 955-1690



Micrel Semiconductor
Micrel Semiconductor

SY89540U Datasheet Preview

SY89540U Datasheet

Precision Low Jitter 4x4 LVDS Crosspoint Switch

No Preview Available !

SY89540U pdf
Micrel, Inc.
Functional Block Diagram
I N0
50
VT0
50
/I N0
Vre f _AC0
I N1
50
VT1
50
/I N1
Vre f _AC1
I N2
50
VT2
50
/I N2
Vre f _AC2
I N3
50
VT3
50
/I N3
Vre f _AC3
SIN0 (CMOS/TTL )
SIN1 (CMOS/TTL )
SOUT0 (CM OS/TTL )
SOUT1 (CM OS/TTL )
CONF (CM OS/TTL)
L OAD (CMOS/TTL )
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
CO NT RO L
Q0
/Q 0
Q1
/Q 1
Q2
/Q 2
Q3
/Q 3
SY89540U
April 2005
2 M9999-042505
hbwhelp@micrel.com or (408) 955-1690


Part Number SY89540U
Description Precision Low Jitter 4x4 LVDS Crosspoint Switch
Maker Micrel Semiconductor
Total Page 13 Pages
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