General Description
The ICS9133Xis designed to generate clocks for all 286, 386, 486, Pentium and RISC-based motherboards, including laptops and notebook computers. The only external components required are a 32.768 kHz crystal and decoupling capacitors.

Features
• Single 32.768 kHz crystal generates all PC motherboard clocks
• Cost-reduced version of popular ICS9132
• Contains internal crystal load capacitors and feedback bias
• 3 independent clock generators
• Generates CPU clocks from 12.5 to 100 MHz
• Up to 7 output clocks
• Separate VDD for 32 kHz clock
• Output enable tristates outputs
• Power-down options available
• Operates from 3.3V or 5.0V supply
• Operates up to 66 MHz at 3.3V
• Skew controlled 1X and 2X CPU clocks
• 20-pin PDIP or SOIC package