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BCM5389KFB The Broadcom BCM5389KFB is an 8-port Gigabit Ethernet switch with integrated SerDes, SPI interface, and 128KB packet buffer in a 256-BGA package.
Mfr Part #:

BCM5389KFB

Available from 1 distributors
Mfr Name: Broadcom Limited
Broadcom Limited
The Broadcom BCM5389KFB is an 8-port Gigabit Ethernet switch with integrated SerDes, SPI interface, and 128KB packet buffer in a 256-BGA package.
✓ Total Stock: 1,327 pcs

BCM5389KFB Available from 1 distributor

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✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Smaxon Electronics ✓
Non-Authorised Inventory information
1,327 pcs
On Request
1327 pcs On Request 1 On Request On Request 1115+ On Request On Request
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BCM5389KFB Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Function
Interface
Lead Style
Mounting Type
Number of Pins
Number of Ports
Power Dissipation
Protocol
Supplier Device Package
Voltage
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BCM5389KFB Description

Short technical summary and product information.

The Broadcom BCM5389KFB is an eighth-generation 8-port Gigabit Ethernet switch on a chip, designed for SOHO and subnetwork applications. It integrates nine MACs with support for 9KB jumbo frames, eight SGMII/SerDes interfaces, and a 128KB packet buffer memory. The device features a non-blocking 9-Gigabit Ethernet fully integrated switch fabric and an SPI interface for easy setup and managed operation.

 

Key specifications include support for 4k 802.1Q or port-based VLANs, up to 4000 unicast MAC addresses, and four 802.1p QoS priority queues. The switch supports full-duplex (802.3x) and half-duplex flow control, as well as Spanning Tree and Rapid Spanning Tree protocols. Port-based rate control with 64kbps granularity is also included.

 

The device is built on a low-power 0.13 µm CMOS core with a 1.2V supply voltage and maximum power dissipation under 1.5W, enabling fanless operation. It is housed in a 256-pin FBGA package measuring 17mm x 17mm for surface mount assembly.

BCM5389KFB Quick Information

Product Type: Ethernet Switch
Canonical Name: Broadcom BCM5389KFB 8-Port Gigabit Ethernet Switch
Subcategory: Network Switch IC

BCM5389KFB Compliance

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

BCM5389KFB Features

  • 8-port Gigabit Ethernet switch with integrated SerDes.
  • SPI interface for easy setup and managed operation.
  • Supports 4k 802.1Q VLANs and 4000 MAC addresses.
  • Low power 0.13 µm CMOS core under 1.5W.
  • 256-pin FBGA package for surface mount assembly.

BCM5389KFB Applications

  • Ideal for SOHO and subnetwork Ethernet switches.
  • Suitable for unmanaged to fully managed switch designs.
  • Used in cost-effective Gigabit Ethernet desktop connectivity.
  • Enables fanless switch designs for quiet operation.

BCM5389KFB FAQs

7 frequently asked questions generated from this part’s specifications.
What is the supply voltage for the BCM5389KFB?

1.2 V.

What package type is the BCM5389KFB available in?

256-BGA (17x17 mm).

Is the BCM5389KFB RoHS compliant?

RoHS3 compliant (unverified).

How many ports does the BCM5389KFB have?

8 ports.

Does it support VLANs?

Yes, it supports 4k 802.1Q or port-based VLANs.

What is the packet buffer size?

128 KB.

What is the mounting type?

Surface mount, inferred from BGA package.

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