Functional Description

The CY2318ANZ is a 3.3V buffer designed to distribute high-speed clocks in PC applications. The part has 18 outputs, 16 of which can be used to drive up to four SDRAM DIMMs, and the remaining can be used for external feedback to a PLL. The device operates at 3.3V and outputs can run up to 100 MHz, thus making it compatible with Pentium II® processors. The CY2318ANZ can be used in conjunction with the CY2280,

CY2281, CY2282 or similar clock synthesizer for a complete Pentium II motherboard solution.

Features

• One input to 18 output buffer/driver

• Supports up to four SDRAM DIMMs

• Two additional outputs for feedback

• Serial interface for individual output control

• 150ps typical output-output skew

• Up to 100 MHz operation

• Dedicated OE pin for testing

• Space-saving 48-pin SSOP package

• 3.3V operation