General 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  c consult  the  Micrel  website  at ombination, 
www.micrel.com,  and  choose  from  a  comprehensive 
product  line  of  high speed,  low- -skew  fanout  buffers, 
translators and clock generators. 
Datasheets  and  support  documentation  are  available on  
Micrel’s web site at: www.micrel.com.  
Features 
•  Guaranteed AC performance over temperature and 
voltage: 
−  -  DC to > 2GHz throughput
−  - -  <600ps propagation delay (IN to Q)
−  -  <20ps within device skew
−     <150ps rise/fall times
•  - : Ultra low jitter design
−  98fsRMS   phase jitter
•  -Patented Any In 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  3mm QFN package
Applications 
•   Processor clock distribution
•   SONET clock distribution
•   Fibre Channel clock distribution
•   Gigabit Ethernet clock distribution
 
Functional Block Diagram 
 
 
Typical Performance 
 
 
 
Precision Edge rel, Inc. is a registered trademark of Mic  
Micrel Inc. • 2180 Fortune Drive •  Jose, CA 95131 • USA • tel +1 (408) 944 0800 • fax + 1 (408) 474 1000 • San  - - http://www.micrel.com  
September 10, 2014 
 
Revision 3.0 
hbwhelp@micrel.com or (408) 955-1690