ICS552-01A
Crystal Oscillator & Multiplier with 8 Low Skew Outputs
Description
The ICS552-01A produces 8 low skew
copies of a multiple of the input when a
clock or fundamental, parallel-mode crystal
is connected to it. Unlike other clock
drivers, it does not require a separate
oscillator for the input. Using a phase-
locked loop (PLL) to multiply the input
frequency, it is ideal for generating and
distributing multiple high frequency clocks.
Features
• Packaged in 20 pin SSOP (QSOP)
• Input frequency of 10.0 - 27.0 MHz
• Contains on-chip multiplier with selections
of x1, x1.33, x2, x2.66, x3, x3.33, x4,
x4.66, x5, and x6
• Provides 8 low skew outputs (<250 ps)
• Output clock duty cycle of 40/60 at 3.3 V
• Operating voltages of 3.0 V to 5.5 V
• Industrial temperature available
• Power Down and Tri state modes
GND
Block Diagram
VDD
Output
Buffer
CLK1
CLK2
CLK3
CLK4
CLK5
CLK6
CLK7
CLK8
S3:S0
4
PLL
Multiplier
Output
Buffer
Output
Buffer
Output
Buffer
10.0 - 27.0 MHz
crystal or clock
X1
Clock
Buffer/
Crystal
Oscillator
X2
Output
Buffer
Output
Buffer
Output
Buffer
Output
Buffer
1
Revision 032200
Printed 11/14/00
Integrated Circuit Systems • 525 Race Street • San Jose • CA • 95126 • (408) 295-9800tel • www.icst.com
MDS 552-01 AB
ICS [ INTEGRATED CIRCUIT SYSTEMS ]
