ON Semiconductor FS6377-01IG-XTD, 4 PLL Clock Synthesizer, 16-Pin SOIC

Emitter Coupled Logic (ECL)
Arithmetic functions such as counters, dividers

The FS6377 is a CMOS clock generator IC designed to minimize cost and component count in a variety of electronic systems. Three I2C-programmable phase locked loops (PLLs) feeding four programmable muxes and post dividers provide a high degree of flexibility.

Three on-chip PLLs with programmable reference and feedback dividers
Four independently programmable muxes and post dividers
I2C-bus serial interface
Programmable power-down of all PLLs and output clock drivers
One PLL and two mux/post-divider combinations can be modified by SEL_CD input
Tristate outputs for board testing
5 V to 3.3 V operation
Accepts 5 MHz to 27 MHz crystal resonators
Commercial and industrial temperature ranges offered
Applications
Industrial

Clock Generators/Buffers