VSC8491YJU-17

Overview

The VSC8491YJU-17 is a single-channel SerDes PHY designed for WAN, LAN, and backplane applications. It converts RXAUI/XAUI interfaces to SFP+ or 10GBASE-KR media. The device supports IEEE 1588v2 precision time protocol with VeriTime technology and includes IntelliSec hardware security features. It operates within a temperature range of -40°C to +100°C and utilizes an FCBGA-196 package.

Feature Summary

• Integrates VeriTime technology for deterministic timestamping accuracy in synchronization networks.
• Supports MACsec encryption for hardware-based data protection on Ethernet frames.
• Provides flexible interface conversion between host-side XAUI/RXAUI and optical or copper physical layers.

Applications

• IEEE 1588 Transparent Clock line card implementations
• SFP/SFP+ optical transceiver modules
• Backplane equalization systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet VMDS-10506 to confirm pinout and feature configuration. Confirm availability status as product lifecycles may change without notice. Ensure environmental compliance documentation matches the required deployment standards.

Selection Notes

Select this component when a single high-speed channel with integrated timing accuracy is required. Verify that the host system supports the necessary RXAUI or XAUI signaling rates. Ensure the application environment accommodates the specified thermal dissipation requirements for the FCBGA-196 package.

Part Context

This part belongs to the VSC8491 family of SerDes PHYs manufactured by Microchip Technology. It serves as a specialized networking interface solution bridging digital host interfaces with various physical transmission media. The device is engineered for high-performance telecommunications and data center infrastructure.

Replacement Considerations

Consult official Microchip discontinuation notices for valid substitute part numbers. Do not assume functional equivalence with other series members without verifying register compatibility and electrical specifications.

FAQ

What physical layer standards does the VSC8491YJU-17 support?

The device supports 10GBASE-KR backplane connections and SFP+/SFP optical module interfaces.

How does the device handle network synchronization?

It incorporates VeriTime technology to provide precise hardware timestamping compliant with IEEE 1588v2 standards.

Is hardware encryption supported?

Yes, the component includes IntelliSec features that support MACsec for secure Ethernet frame processing.