Integrated
Circuit
Systems, Inc.
ICS9158-03
Frequency Generator and Integrated Buffer
General Description
The
ICS9158-03
is a low-cost frequency generator designed
specifically for desktop and notebook PC applications. Eight
copies of the CPU clock are available.
Each high drive (40mA) output is capable for driving a 30pF
load and has a typical duty cycle of 50/50. The clock
outputs are skew-controlled to within ±250ps.
The
ICS9158-03
makes a gradual transition between
frequencies, so that it meets the Intel cycle-to-cycle timing
specification for 486 and Pentium systems.
Features
8 skew-free, high drive CPU/BUS clocks
Up to 100 MHz output
±250ps skew between all outputs
Outputs can drive up to 30pF load and 40mA
50±10% duty cycle
Compatible with 486 and Pentium CPUs
On-chip loop filter components
4.5V - 5.5V supply range
24-pin SOIC package
Applications
Ideal for RISC or CISC systems such as 486, Pentium,
PowerPC, etc. requiring multiple CPU and BUS
clocks.
Block Diagram
9158-03 Rev D 7/28/98
ICS reserves the right to make changes in the device data identified in this publication
without further notice. ICS advises its customers to obtain the latest version of all
device data to verify that any information being relied upon by the customer is current
and accurate.
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