IDT, Integrated Device Technology Inc ICS308RI

Description
The ICS308 is a versatile, serially programmable, quad-PLL clock source. It can generate any frequency from 250 kHz to 200 MHz, and up to 6 different output frequencies simultaneously. The outputs can be reprogrammed on the fly, and will lock to a new frequency in 10 ms or less. Smooth transitions (in which the clock duty cycle remains roughly 50%) are guaranteed if the output divider is not changed.
The device includes a PDTS pin which tri-states the output clocks and powers down the entire chip.
The ICS308 default for non-programmed start-up are buffered reference clock outputs on all clock output pins.

Features
Packaged in 20-pin SSOP (QSOP)
Available in Pb (lead) free package
Operating voltage of 3.3 V
Highly accurate frequency generation
M/N Multiplier PLL: M=1..2048, N = 1..1024
Serially programmable: user determines the output frequency via a 3-wire interface
Eliminates need for custom quartz oscillators
Input crystal frequency of 5-27 MHz
Optional programmable on-chip crystal capacitors
Output clock frequencies up to 200 MHz
Reference clock output
Power down tri-state mode
Very low jitter

Applications
Telecommunications
Networking
Industrial control
Medical electronics
Test and measurement