CY28400ZXC-2T

Application Specific Clock/Timing Overview

The CY28400ZXC-2T is a clock buffer manufactured by Skyworks Solutions Inc., designed for PCI Express applications. It functions as a 1-to-4 differential fan-out buffer, providing signal integrity for high-speed serial interfaces. The device operates within a supply voltage range of 3.135 V to 3.465 V and supports maximum input frequencies up to 210 MHz and output frequencies up to 100 MHz. It is housed in an SSOP-28 package with surface mount installation. The component is classified as a clock buffer under the Clock & Timer ICs subcategory.

Application Specific Clock/Timing Feature Summary

• PCI Express Buffer: Designed specifically for PCIe signal distribution.
• 1-in 4-out Configuration: Provides one differential input and four differential outputs.
• High Frequency Support: Handles input frequencies up to 210 MHz and output frequencies up to 100 MHz.
• SSOP-28 Package: Surface-mount package suitable for automated assembly.

Application Specific Clock/Timing Applications

• PCI Express Gen1/2/3 systems requiring clock distribution.
• Motherboards utilizing Intel Grantsdale, 865, or 875 chipsets.
• Server platforms needing reliable differential clock buffering.

Application Specific Clock/Timing Procurement Notes

The CY28400ZXC-2T is listed as End-of-Life (EOL) by the manufacturer. Availability is restricted, and distributors may not stock this item in all regions. Verification of current supply status and last-time-buy options is required before procurement planning. Ensure compatibility with existing PCB footprints for the SSOP-28 package.

Application Specific Clock/Timing Selection Notes

Select this component when a 1-to-4 differential clock buffer is needed for PCIe architectures. Verify that the system requires the specific 3.135V to 3.465V operating voltage range. Confirm that the SSOP-28 package dimensions fit the design constraints. Consider replacement parts if new production is planned due to EOL status.

Application Specific Clock/Timing Part Context

This part belongs to the CY28400 series of clock buffers from Skyworks Solutions. It is often associated with legacy Intel chipset designs, such as those for the Grantsdale platform. The 'ZXC' suffix typically denotes the package type and temperature range, while '-2T' indicates the tape-and-reel packaging variant. It serves as a critical timing element in older server and workstation motherboards.

Application Specific Clock/Timing Replacement Considerations

Public confirmed substitute part numbers include SI53154-A01AGM, which is a 1:4 fan-out buffer for PCI-express Gen1/2/3. Verify pinout and electrical specifications against the original design requirements before substitution.