Description
The ICS308 is a versatile serially programmable, quad PLL clock source. The ICS308 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.

Features
• Packaged in 20-pin SSOP (QSOP)
• 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