VSC8248YJH-01

Application Specific Clock/Timing Overview

The VSC8248YJH-01 is a quad-channel clock and data recovery (CDR) integrated circuit manufactured by Microsemi, now part of Microchip Technology. It operates within a data rate range of 8.5 Gbps to 11.3 Gbps, supporting legacy rates such as 1.25 Gbps Ethernet, 2G/4G Fibre Channel, and 2.5G/5G Infiniband. The device features on-chip adaptive electronic dispersion compensation (EDC) with FFE-DFE technology and a KR-compliant multi-tap output driver. It utilizes a 16 mm × 16 mm, 225-pin FCBGA package and requires typical core power supplies of 1.8 V and 1.2 V.

Application Specific Clock/Timing Feature Summary

• Quad-channel CDR with integrated adaptive EDC for optical and electrical signal integrity
• KR-compliant programmable output driver for backplane and copper applications
• Supports SFI/XFI interfaces and multiple protocols including 10G Ethernet and Fibre Channel
• Embedded microcontroller with on-board RAM and MDIO interface for system integration

Application Specific Clock/Timing Applications

• Low-cost, high-port-density 10G SFP+ platforms
• 40G/100G CFP module designs utilizing 4x10G or 10x10G configurations
• 10G KR and legacy backplane upgrades in network infrastructure

Application Specific Clock/Timing Procurement Notes

Verify the specific ordering suffix against current Microchip documentation, as product portfolios transitioned from Microsemi to Microchip Technology. Confirm availability status, as older Microsemi components may be subject to discontinuation notices. Ensure compliance with humidity sensitivity handling requirements specified in the datasheet during storage and assembly.

Application Specific Clock/Timing Selection Notes

Select this component for applications requiring flexible per-channel operation and independent power-down capabilities. The integrated EDC is suitable for compensating intersymbol interference in copper interconnections and chromatic dispersion in optical links. Verify that the host system supports the required 1.8 V and 1.2 V core voltage rails and the 1.2 V to 3.3 V TTL supply.

Application Specific Clock/Timing Part Context

This device belongs to the VSC8248 series of high-performance CDR ICs originally developed by Microsemi Corporation. The product line addresses signal regeneration needs in high-speed serial communications. Following Microchip's acquisition of Microsemi, these timing and synchronization devices are maintained within the broader portfolio of communication and networking solutions.

Application Specific Clock/Timing Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Users should consult official Microchip cross-reference guides for potential alternatives.