ICS556-04
MDS 556-04 C 1 Revision 030905
Integrated Circuit Systems ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com
LOW SKEW 1 TO 4 CLOCK BUFFER
Description
The ICS556-04 is a low-skew, crystal input compatible
clock buffer with oscillator. This device offers the lowest
skew.
See the ICS552-02 for a 1-to-8 low skew buffer. For
more than eight outputs see the MK74CBxxx Buffalo
TM

series of clock drivers.
ICS makes many non-PLL and PLL-based low-skew
output devices. Contact ICS for all of your clocking
needs.
Features
• Extremely low-skew outputs (50 ps maximum)
• Packaged in 8-pin SOIC
• Operating voltages of 2.5 to 5.0 V
• Low-power CMOS technology
• Industrial temperature range
• Available in Pb (lead) free package
Block Diagram
Q0
Q1
Q2
Q3
X1/ICLK
X2
5 to 27 MHz
Crystal or clock
Crystal
Oscillator/
Buffer
Optional crystal
capacitors