ICS409
PC PERIPHERAL CLOCK
Description
Features
The ICS409 is a cost-effective clock synthesizer
developed to optimize component count for PC
peripheral applications. The device supports a
common, low cost 14.31818 MHz crystal using an
on-chip crystal oscillator. The device locks all output
frequencies to enhance system performance. By
supporting common PC peripheral interface
frequencies including dual 25 MHz and 40/80 MHz
frequencies the clock lowers chip count enhancing
system cost and reliability.
• Pin compatible with FS6286-01
• Low operating voltage of 3.3V
• On-chip oscillator supports 14.31818 MHz crystal
• Fixed dual 25 MHz clocks for Ethernet
• 40/80 MHz selected on rising edge of OE/LAT pin
• Power consumption of 15 mA (typ)
• Duty cycle of 45 to 55%
• Packaged in 8-pin SOIC
• Available in Pb (lead) free package
The ICS409 utilizes a low pin count 8-pin SOIC
package to optimize board space.
ICS is a leader in low jitter and power consumer
application clock sources. These devices are capable
of supporting CCD, video, audio, USB, CPU, and other
peripherals.
Block Diagram
V D D
2 5 M
X 1
1 4 .3 1 8 1 8 M H z
F u n d a m e n ta l
C ry s ta l
C ry s ta l
O s c illa to r
P L L
4 0 /8 0 M
2 5 M
X 2
G N D
O E /L A T
MDS 409 C
1
Revision 111005
Integrated Circuit Systems l 525 Race Street, San Jose, CA 95126 l tel (408) 297-1201 l www.icst.com
ICSI [ INTEGRATED CIRCUIT SOLUTION INC ]
