
Cypress Semiconductor
Functional Description
The CY2309NZ is a low-cost buffer designed to distribute high-speed clocks in mobile PC systems and desktop PC systems with SDRAM support. The part has nine outputs, eight of which can be used to drive 2 DIMMs or 4 SO-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 133.33 MHz.
FEATUREs
• One-input to nine-output buffer/driver
• Supports two DIMMs or four SO-DIMMs with one additional output for feedback to an external or chipset PLL
• Low power consumption for mobile applications
— Less than 32 mA at 66.6 MHz with unloaded outputs
• 8.7-ns Input-Output delay
• Buffers all frequencies from DC to 133.33 MHz
• Output-output skew less than 250 ps
• Multiple VDD and VSS pins for noise and electromagnetic interference (EMI) reduction
• Space-saving 16-pin 150-mil SOIC package
• 3.3V operation
• Industrial temperature available