CY2318BNZ
Overview
- One input to 18 output buffer/driver
- Supports up to four SDRAM DIMMs
- Two additional outputs for feedback
- SMBus interface for individual output control
- Low skew outputs (< 200 ps)
- Up to 100 MHz operation for Industrial temperatures
- Up to 133 MHz operation for Commercial temperatures
- Dedicated OE pin for testing
- Space-saving 48-pin SSOP package
- 3.3V operation Functional Description The CY2318BNZ 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 CY2318BNZ can be used in conjunction with the CY2280, CY2281, CY2282 or similar clock synthesizer for a complete Pentium II motherboard solution. The CY2318BNZ also includes an SMBus interface which can enable or disable each output clock. On power-up, all output clocks are enabled (internal pull up). A separate Output Enable pin facilitates testing on ATE.
