SY89833L_07 Datasheet, PDF (1/10 Pages) Micrel Semiconductor – 3.3V ULTRA-PRECISION 1:4 LVDS FANOUT BUFFER/TRANSLATOR WITH INTERNAL TERMINATION

Micrel, Inc.
3.3V ULTRA-PRECISION 1:4 LVDS
FANOUT BUFFER/TRANSLATOR
WITH INTERNAL TERMINATION
Precision Edge^®
Precision E^Sd^Y8g⁹e^8®33L
SY89833L
FEATURES
■ Guaranteed AC performance over temperature
and voltage:
• DC-to > 2GHz throughput
• <600ps propagation delay (IN-to-Q)
• <20ps within-device skew
• <190ps rise/fall times
■ Ultra-low jitter design
• <1ps_RMS cycle-to-cycle jitter
• <10ps_PP total jitter
• <1ps_RMS random jitter
• <10ps_PP deterministic jitter
■ Unique input termination and VT pin accepts DC-
and AC-coupled inputs
■ High-speed LVDS outputs
■ 3.3V power supply operation
■ Industrial temperature range: –40°C to +85°C
■ Available in 16-pin (3mm x 3mm) MLF^® package
APPLICATIONS
■ Processor clock distribution
■ SONET clock distribution
■ Fibre Channel clock distribution
■ Gigabit Ethernet clock distribution
FUNCTIONAL BLOCK DIAGRAM
1:4
Q0
/Q0
Q1
IN
/Q1
50Ω
VT
/IN ^50Ω
Q2
VREF-AC
/Q2
EN
DQ
(LVTTL/CMOS)
Q3
/Q3
Precision Edge^®
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 VT pin. This feature allows the device to
easily interface to different logic standards. A VREF-AC
reference is included for AC-coupled applications.
The SY89833L is part of Micrel’s high-speed clock
synchronization family. For 2.5V applications, the SY89832U
provides similar functionality while operating from a 2.5V
±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.
TYPICAL PERFORMANCE
622MHz Output
TIME (321.9ps/div.)
Precision Edge is a registered trademark of Micrel, Inc.
MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc.
August 2007
1
M9999-082407
[e-mail] or [phone]