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BCM5389KFBG Broadcom BCM5389KFBG is an 8-port Gigabit Ethernet switch IC with integrated SerDes, SPI interface, and 128KB packet buffer. It supports 802.1Q VLAN, jumbo frames up to 9KB, and operates at 1.2V to 1.26V.
Mfr Part #:

BCM5389KFBG

Available from 2 distributors
Mfr Name: Broadcom Limited
Broadcom Limited
Broadcom BCM5389KFBG is an 8-port Gigabit Ethernet switch IC with integrated SerDes, SPI interface, and 128KB packet buffer. It supports 802.1Q VLAN, jumbo frames up to 9KB, and operates at 1.2V to 1.26V.
✓ Total Stock: 1,744 pcs

BCM5389KFBG Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Xingangxin ✓
Non-Authorised Inventory information
1,630 pcs
On Request
1630 pcs On Request 1 On Request On Request On Request On Request On Request
Smaxon Electronics ✓
Non-Authorised Inventory information
114 pcs
On Request
114 pcs On Request 1 On Request On Request 1602+ On Request On Request
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BCM5389KFBG Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Function
Interface
Mounting Type
Number of Ports
Power Dissipation
Protocol
Supplier Device Package
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BCM5389KFBG Description

Short technical summary and product information.

The Broadcom BCM5389KFBG is an eighth-generation 8-port Gigabit Ethernet switch-on-a-chip with integrated SerDes. It provides nine MACs (802.x compliant) and a non-blocking 9-Gigabit Ethernet switch fabric. The device includes a 128KB packet buffer and supports jumbo frames up to 9KB. It is managed via an SPI interface for easy setup and operation.

 

Key features include support for up to 4k VLANs (802.1Q or port-based), 4k unicast MAC addresses, MAC-based port aggregation, and flow control (full-duplex 802.3x and half-duplex). The switch classifies packets using four 802.1p QoS or DiffServ priority queues. It also supports Spanning Tree and Rapid Spanning Tree protocols.

 

Designed for cost-sensitive SOHO and subnetwork applications, the BCM5389KFBG operates with a low-power 0.13µm 1.2V CMOS core, consuming less than 1.5W typical. It supports fanless operation. The device is available in a 256-pin FBGA package (17x17mm) for small form factor designs.

BCM5389KFBG Quick Information

Product Type: Ethernet Switch IC
Canonical Name: Broadcom BCM5389KFBG 8-Port Gigabit Ethernet Switch
Subcategory: Switch Controllers

BCM5389KFBG Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

BCM5389KFBG Features

  • 8 Gigabit Ethernet ports with integrated SerDes.
  • SPI interface for easy managed operation.
  • Supports 802.1Q VLAN and 4k VLANs.
  • Low power consumption less than 1.5W.
  • 256-BGA package (17x17mm) for compact designs.

BCM5389KFBG Applications

  • SOHO and subnetwork Gigabit Ethernet switches.
  • Unmanaged and managed switch applications.
  • Cost-effective desktop connectivity solutions.
  • Fanless switch designs for small form factors.

BCM5389KFBG FAQs

7 frequently asked questions generated from this part’s specifications.
What is the supply voltage range of the BCM5389KFBG?

1.2V to 1.26V.

What package does the BCM5389KFBG come in?

256-pin BGA (17x17mm) surface mount package.

Is the BCM5389KFBG RoHS compliant?

Listed as RoHS3 Compliant, but this is unverified.

How many ports does the BCM5389KFBG have?

8 Gigabit Ethernet ports.

Does the BCM5389KFBG support jumbo frames?

Yes, up to 9KB jumbo frames.

What is the maximum VLAN support?

Up to 4k VLANs (802.1Q or port-based).

What is the power dissipation of the BCM5389KFBG?

Less than 1.5W typical.

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