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Packaged as 20-pin SSOP (QSOP)
Spread spectrum capability
Eight addressable registers
Replaces multiple crystals and oscillators
Output frequencies up to 200 MHz at 3.3 V
Input crystal frequency of 5 to 27 MHz
Input clock frequency of 2 to 50 MHz
Up to nine reference outputs
Up to two sets of four low-skew outputs
Operating voltages of 3.3 V
Advanced, low-power CMOS process
For one output clock, use the ICS341. For two output
clocks, see the ICS342. For three output clocks, see
the ICS343. For more than three outputs, see the
ICS345 or ICS348.
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Available in Pb (lead) free packaging
Block Diagram
VDD
3
S 2:S 0
3
OTP
ROM
w ith
P LL
V alues
P LL1 with
S pread
S pectrum
D ivide
Logic
and
O utput
E nable
C ontrol
C LK 1
C LK 2
C LK 3
P LL2
C LK 4
C LK 5
C LK 6
C LK 7
C LK 8
C rystal or
clock input
X 1/IC LK
C rystal
O scillator
X2
P LL3
C LK 9
E xternal capacitors are
required w ith a crystal input.
GND
2
PD TS
MDS 345 D
Integrated Circuit Systems, Inc.
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1
525 Race Street, San Jose, CA 95126
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Revision 090704
tel (408) 297-1201
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