BCM54680B0KFBG
| Part Number | BCM54680B0KFBG |
|---|---|
| Manufacturer | Broadcom Limited |
| Category | Integrated Circuits (ICs) > Interface – Telecom / Ethernet Transceivers (PHY) |
| Description | High-density, low-power octal-port 10/100/1000BASE-T Gigabit Ethernet transceiver (PHY) integrating QSGMII/SGMII MAC interfaces and advanced cable diagnostics for enterprise switches and high-density routers. |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The BCM54680B0KFBG is an 8-port Gigabit Ethernet PHY from Broadcom for high-density network equipment. This single-chip device integrates eight independent 10/100/1000BASE-T transceivers to reduce PCB size and routing complexity. It supports QSGMII and SGMII interfaces to cut MAC connection pin counts. Equipped with Broadcom DSP technology, it delivers robust anti-interference and crosstalk suppression for CAT5 copper cables. Packaged in 400-BGA halogen-free housing, it serves as core chip for enterprise switches, edge routers and communication infrastructure.
Core Advantages
Ultra-High Density Octal-Port Integration
Unifies eight distinct Gigabit PHY channels onto a single silicon die, reducing the physical layout footprint and thermal management overhead compared to multi-chip discrete implementations.
Advanced QSGMII Interface Protocol
Utilizes Quad SGMII links to combine four ports of data into a single differential pair channel, significantly minimizing the overall I/O pin count, board layers, and routing congestion for system designers.
Innovative Energy Efficient Ethernet (EEE)
Fully compliant with the IEEE 802.3az standard, dynamically scaling power consumption based on real-time network traffic loads to reduce data center power dissipation during periods of low activity.
Comprehensive On-Chip Cable Diagnostics
Integrates advanced digital cable testing utilities that autonomously analyze network cabling conditions, pinpointing distance-to-fault anomalies, shorts, and opens without disrupting operational network streams.
Key Specifications
| Brand | Broadcom Limited |
|---|---|
| RoHS Status | RoHS 10 Compliant, Halogen-Free & Lead-Free packaging |
| EDA/CAD Model | 3D Model & PCB Footprint Available upon request |
| Warranty | 1-Year Standard Factory Warranty |
| Package / Case | 400-FBGA (21×21mm) |
| Mounting Type | Surface Mount Technology (SMD/SMT) |
| Surface Marking / Silkscreen | BCM54680B0KFBG Marking |
| Data Transfer Rate | 10 / 100 / 1000 Mbps (Triple-Speed Auto-Negotiation Support) |
| Number of Ports | 8 Independent Ports (Octal PHY Configuration) |
| MAC Interface Standard | QSGMII (Quad SGMII) and SGMII Support |
| Physical Layer Interface | 10BASE-T, 100BASE-TX, and 1000BASE-T Copper Line Side Connectivity |
| Standard Compliance | IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3az (EEE) |
| Diagnostic Functions | Integrated Loopback Modes, PRBS Generation, and Link Quality Monitors |
| Silicon Revision Code | B0 Stepping Core Architecture |
| Operating Temperature Range | Commercial Specification Operational Envelope (0°C to +70°C Case Boundary) |
Typical Applications
- High-Density Enterprise LAN Switches and Layer 2 / Layer 3 Managed Network Infrastructure
- Cloud Data Center Top-of-Rack (ToR) Aggregation Swappable Modules and Blade Server Backplanes
- Edge Routing Telecommunication Hardware, Carrier Ethernet Gateways, and Broadband Access Concentrators
- Multi-Port Network Interface Cards (NICs), High-Performance Server Controller Adapters
- Industrial Computing Hubs, Heavy Security Appliance Aggregators, and Distributed High-Volume Storage Arrays
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1-2 business days |
| Delivery Time | 3-7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, or bulk pricing, please use the Quick Inquiry form. We will reply within 24 hours.
Frequently Asked Questions
Q1: Is your BCM54680B0KFBG inventory fully original factory stock?
A: Yes, all BCM54680B0KFBG transceivers are brand-new genuine Broadcom parts, stored and shipped under strict ESD anti-static and MSL moisture-proof dry-pack standards.
Q2: How does QSGMII reduce hardware manufacturing cost?
A: QSGMII combines four SGMII channels into one differential pair, cutting signal traces by nearly 75%. It simplifies PCB routing and allows lower-layer, cheaper circuit boards.
Q3: Does BCM54680B0KFBG support power saving under light traffic?
A: Yes, it fully supports IEEE 802.3az EEE. The chip automatically enters low-power idle mode during idle periods to cut power consumption without link interruption.
Q4: How to get layout documents, register guides and bulk price tiers?
A: Fill out the Quick Inquiry form on this page. Our technical team will send complete datasheets and wholesale quotations within 24 hours.

