General Description
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.

Key Features
• 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
• 5V to 3.3V operation
• Accepts 5MHz to 27MHz crystal resonators
• Commercial and industrial temperature ranges offered