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CY28359 - 273-MHz 6-Output Buffer

General Description

The CY28359 is a 2.5V buffer designed to distribute high-speed clocks in PC applications.

The part has 6 differential outputs.

Designers can configure these outputs to support up to two DDR DIMMs.

Key Features

  • Dual 1- to 3-output buffer/driver.
  • Supports up to 2 DDR DIMMs.
  • Outputs are individually enabled/disabled.
  • Low-skew outputs (< 100 ps).
  • Supports 266-MHz, 333-MHz and 400-MHz DDR SDRAM.
  • SMBus Read and Write support.
  • Space-saving 28-pin SSOP package Functional.

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Other Datasheets by Cypress (now Infineon)

Part Number Description
CY28351 Differential Clock Buffer/Driver
CY28352 Differential Clock Buffer/Driver
CY28354-400 210-MHz 24-Output Buffer
CY28358 200-MHz Differential Clock Buffer/Driver
CY28301 Frequency Generator for Intel Integrated Chipset

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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PRELIMINARY CY28359 273-MHz 6-Output Buffer for DDR400 DIMMS Features • Dual 1- to 3-output buffer/driver • Supports up to 2 DDR DIMMs • Outputs are individually enabled/disabled • Low-skew outputs (< 100 ps) • Supports 266-MHz, 333-MHz and 400-MHz DDR SDRAM • SMBus Read and Write support • Space-saving 28-pin SSOP package Functional Description The CY28359 is a 2.5V buffer designed to distribute high-speed clocks in PC applications. The part has 6 differential outputs. Designers can configure these outputs to support up to two DDR DIMMs. The CY28359 can be used in conjunction with the CY28326 or similar clock synthesizer for the VIA P4X600 chipset. The CY28359 also includes an SMBus interface which can enable or disable each output clock. On power-up, all output clocks are enabled.