Micrel, Inc.
ULTRA PRECISION DIFFERENTIAL
LVPECL 4:1 MUX with 1:2 FANOUT
and INTERNAL TERMINATION
Precision Edge
SY58029U
Precision Edge
廬
SY58029U
廬
FEATURES
s
Selects 1 of 4 differential inputs
s
Provides two copies of the selected input
s
Guaranteed AC performance over temperature and
voltage:
鈥?DC-to-> 5Gbps data rate throughput
鈥?< 390ps IN-to-Out t
pd
鈥?< 110ps t
r
/ t
f
times
s
Ultra low-jitter design:
鈥?< 10ps
PP
total jitter (clock)
鈥?< 1ps
RMS
random jitter
鈥?< 10ps
PP
deterministic jitter
鈥?< 0.7ps
RMS
crosstalk-induced jitter
s
Unique patended input design minimizes crosstalk
s
Accepts an input signal as low as 100mV
s
Unique patented input termination and V
T
pin
accepts DC- and AC-coupled inputs (CML, LVPECL,
LVDS)
s
800mV 100K LVPECL output swing
s
Power supply 2.5V
鹵
5% or 3.3V
鹵
10%
s
鈥?0
擄
C to +85
擄
C temperature range
s
Available in 32-pin (5mm
脳
5mm) MLF鈩?package
Precision Edge
廬
DESCRIPTION
The SY58029U is a 2.5V/3.3V precision, high-speed, 4:1
differential multiplexer with 100k LVPECL (800mV)
compatible outputs, capable of handling clocks up to 4GHz
and data streams up to 5Gbps. In addition, a 1:2 fanout
buffer provides two copies of the selected inputs.
The differential input includes Micrel鈥檚 unique, 3-pin input
termination architecture that allows customers to interface
to any differential signal (AC- or DC-coupled) as small as
100mV without any level shifting or termination resistor
networks in the signal path. The result is a clean, stub-free,
low-jitter interface solution. The outputs are 800mV LVPECL,
(100k temperature compensated) with extremely fast rise/
fall times guaranteed to be less than 110ps.
The SY58029U operates from a 2.5V
鹵5%
supply or a
3.3V
鹵10%
supply and is guaranteed over the full industrial
temperature range of 鈥?0擄C to +85擄C. For applications that
require CML outputs, consider the SY58028U. For 400mV
LVPECL outputs, consider the SY58030U. The SY58029U
is part of Micrel鈥檚 high-speed, Precision Edge
廬
product line.
All support documentation can be found on Micrel鈥檚 web
site at www.micrel.com.
APPLICATIONS
s
s
s
s
s
Redundant clock and/or distribution
All SONET/SDH clock/data distribution
Loopback
All Fibre Channel distribution
All Gigabit Ethernet clock and/or data distribution
FUNCTIONAL BLOCK DIAGRAM
IN0
50鈩?/div>
V
T0
50鈩?/div>
/IN0
V
REF-AC0
0
IN1
50鈩?/div>
V
T1
50鈩?/div>
/IN1
V
REF-AC1
IN2
2
50鈩?/div>
V
T2
50鈩?/div>
/IN2
V
REF-AC2
IN3
50鈩?/div>
V
T3
50鈩?/div>
/IN3
3
1
MUX
4:1
MUX
1:2
Fanout
TYPICAL PERFORMANCE
2.5Gbps Output (2
23
Q0
/Q0
脨1 PRBS)
Output Swing
(200mV/div.)
Q1
/Q1
TIME (100ps/div.)
V
REF-AC3
SEL0 (CMOS/TTL)
SEL1 (CMOS/TTL)
Precision Edge is a registered trademark of Micrel, Inc.
MicroLeadFrame
and MLF are trademarks of Amkor Technology, Inc.
M9999-051105
hbwhelp@micrel.com or (408) 955-1690
Rev.: B
Amendment: /0
1
Issue Date: May 2005
SY58030U相關(guān)型號(hào)PDF文件下載
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型號(hào)
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