Precision Edge鈩?/div>
SY89833L
TRANSLATOR W/ INTERNAL TERMINATION
FEATURES
s
Accepts any differential input signal and provides
four LVDS output copies
s
Guaranteed AC performance over temperature
and voltage:
鈥?> 2.0GHz f
MAX
鈥?< 20ps within-device skew
鈥?< 190ps rise/fall times
s
Low jitter design
鈥?< 1ps(rms) cycle-to-cycle jitter
鈥?< 10ps(pk-pk) total jitter
s
3.3V power supply operation
s
TTL/CMOS input for enable
s
Unique input termination and V
T
pin accepts DC-
coupled and AC-coupled inputs (CML, PECL, LVDS,
and HSTL)
s
High-speed LVDS outputs
s
Wide operating temperature range: 鈥?0
擄
C to +85
擄
C
s
Available in 16-pin (3mm
脳
3mm) MLF鈩?package
Precision Edge鈩?/div>
DESCRIPTION
The SY89833L is a 3.3V, high-speed 2GHz differential
Low Voltage Differential Swing (LVDS) 1:4 fanout buffer
optimized for ultra-low skew applications. Within device skew
is guaranteed to be less than 20ps over supply voltage and
temperature.
The differential input buffer has a unique internal
termination design that allows access to the termination
network through a V
T
pin. This feature allows the device to
easily interface to different logic standards. A V
REF_AC
reference is included for AC-coupled applications.
The SY89833L is part of Micrel鈥檚 high-speed clock
synchronization family. For 2.5V applications, the SY89832U
provides similar functionality while operating from a 2.5V
鹵5%
supply. For applications that require a different I/O
combination, consult the Micrel website at
www.micrel.com
,
and choose from a comprehensive product line of high-
speed, low-skew fanout buffers, translators and clock
generators.
APPLICATIONS
s
s
s
s
Processor clock distribution
SONET clock distribution
Fibre Channel clock distribution
Gigabit Ethernet clock distribution
FUNCTIONAL BLOCK DIAGRAM
Q0
/Q0
TYPICAL PERFORMANCE
622MHz Output
Q1
IN
V
T
/IN
50鈩?/div>
50鈩?/div>
/Q1
Q2
/Q2
EN
V
REF鈥擜C
D
Q
Q3
/Q3
鈥?5mV Offset
(50mV/div.)
TIME (321.9ps/div.)
Precision Edge is a trademark of Micrel, Inc.
Micro
LeadFrame and MLF are trademarks of Amkor Technology, Inc.
Rev.: D
Amendment: /0
1
Issue Date: February 2003
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