The BCM54991ELB0KFEBG, manufactured by Broadcom Limited, is a 100GBASE-LR4 Ethernet Transceiver PHY. It's designed for high-speed data communication in networking equipment.

Applications

• 100 Gigabit Ethernet switches
• Routers for data centers and service providers
• Optical transport networks (OTN)
• High-performance computing (HPC) interconnects
• Test and measurement equipment for 100G Ethernet

Features

• 100GBASE-LR4 Compliant: Meets the IEEE 802.3ba standard for 100 Gigabit Ethernet over long-reach single-mode fiber.
• Integrated Clock and Data Recovery (CDR): Incorporates CDR circuitry for both transmit and receive paths, ensuring signal integrity.
• Low Power Consumption: Optimized for power efficiency, reducing operational costs in high-density networking environments.
• CAUI-4 Electrical Interface: Uses a Chip-to-Module interface compliant to the CAUI-4 specification.
• Advanced Equalization: Features advanced equalization techniques to compensate for channel impairments and maximize reach.
• Built-in Self-Test (BIST): Includes BIST capabilities for comprehensive device testing and diagnostics.

Benefits

• High Bandwidth: Enables 100 Gigabit Ethernet connectivity for demanding applications.
• Long Reach: Supports transmission distances up to 10 km over single-mode fiber.
• Simplified System Design: Integrated features simplify the design and integration process.
• Reduced Power Consumption: Low power design minimizes energy consumption and heat dissipation.
• Improved Reliability: Advanced equalization and BIST capabilities ensure robust and reliable operation.

Additional Details

The BCM54991ELB0KFEBG operates from a 3.3V and 1.0V power supply. It supports various diagnostic and monitoring functions, providing valuable insights into link performance. The device is designed to be hot-pluggable, allowing for easy insertion and removal without interrupting network operation. It's often packaged in a small form-factor pluggable (SFP) module.