BCM53455A0IFSBG

Overview

The BCM53455A0IFSBG is a high-performance Ethernet switch IC manufactured by Broadcom Limited. It features a switching architecture comprising twenty ports supporting 1 Gbps and 2.5 Gbps speeds, alongside four 10 Gbps SerDes uplink ports. This configuration provides substantial bandwidth for dense connectivity environments. The device integrates advanced Layer 2/Layer 3 switching capabilities, hardware-based security policies, and quality of service mechanisms to manage traffic efficiently. Designed for robust network infrastructure, it supports various management protocols and offers low power consumption relative to its throughput capacity.

Feature Summary

• Integrates twenty 1/2.5 Gigabit Ethernet ports with four 10 Gigabit SerDes uplinks for scalable bandwidth expansion
• Supports comprehensive Layer 2 and Layer 3 switching functions including VLAN tagging and routing
• Includes hardware-accelerated security features such as access control lists and storm control
• Provides quality of service mechanisms to prioritize critical network traffic streams

Applications

• Enterprise core and distribution layer switches requiring high-density port configurations
• Data center aggregation switches needing 10 Gigabit uplink connectivity
• Service provider edge equipment demanding robust traffic management and segmentation
• High-performance industrial networking hubs with strict latency requirements

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to ensure compatibility with required temperature ranges and package variants. Confirm RoHS compliance status directly with the supplier documentation. Check for any recent lifecycle notices or obsolescence warnings from Broadcom Limited before finalizing procurement plans to avoid supply chain disruptions.

Selection Notes

Select this component when designing systems that require a mix of 2.5 Gigabit access ports and 10 Gigabit backbone connections. Evaluate thermal dissipation requirements due to the high pin count and switching density. Ensure the printed circuit board layout supports the necessary signal integrity for SerDes interfaces. Compare against alternative Broadcom series models if specific port counts or feature sets do not align with the design specifications.

Part Context

This part belongs to the Broadcom BCM53xxx series of Ethernet switches, which are widely used in networking infrastructure. The BCM53455 variant specifically targets applications requiring a balance between high port density and elevated uplink speeds. It complements other devices in the family that may offer different port configurations or feature subsets for varied market segments.

Replacement Considerations

Consult the official Broadcom cross-reference guide for verified substitute part numbers. Consider models within the same BCM53xxx family that offer compatible pinouts and software drivers. Verify electrical characteristics and feature parity before implementing any alternative components to maintain system stability.