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CY2254A

SpectraLinear
Part Number CY2254A
Manufacturer SpectraLinear
Description Pentium Processor Compatible Clock Synthesizer/Driver
Published Sep 8, 2010
Detailed Description Y2254A www.DataSheet4U.com CY2254A Pentium® Processor Compatible Clock Synthesizer/Driver Features • Multiple clock ou...
Datasheet PDF File CY2254A PDF File

CY2254A
CY2254A

Overview
Y2254A www.
DataSheet4U.
com CY2254A Pentium® Processor Compatible Clock Synthesizer/Driver Features • Multiple clock outputs to meet requirements of most Pentium® motherboards — Four pin-selectable CPU clocks @ 66.
66 MHz, 60.
0 MHz, and 50.
0 MHz for support of Intel Triton™ PCIset based PC — 55.
0 MHz pin-selectable CPU clock also available (2 option only) — Six PCI clocks at 1/2 CPU Clock frequency — One I/O clock @ 24 MHz — One Keyboard Controller clock @ 12 MHz (1 option) or one Universal Serial Bus clock @ 48 MHz (2 option) — Two Ref.
clocks @ 14.
318 MHz — Ref.
14.
318 MHz Xtal oscillator input • CPU clock jitter < 200 ps cycle-to-cycle • Low skew outputs — < 250 ps between CPU clocks — < 250 ps between PCI clocks — < 500 ps between CPU and PCI clocks (2 option) — CPU clock leads PCI clock by +1 ns min.
to +4 ns max.
(1 option) • Freq.
stability = 0.
01% (max.
) • Output duty cycle 45% min.
to 55% max.
• Test mode support (1 option only) • 3.
3V or 5.
0V operation • Internal pull-u...


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