Product details


Type Mux Buffer Number of channels (#) 8 Input compatibility DC-coupling Speed (Max) (Gbps) 28.125 Operating temperature range (C) -40 to 85 Protocols 10GbE, 25GbE, CPRI, Interlaken, Fibre Channel, sRIO, General open-in-new Find other Ethernet retimers, redrivers & mux-buffers

Package | Pins | Size

NFBGA (ZBL) 135 104 mm² 13 x 8 open-in-new Find other Ethernet retimers, redrivers & mux-buffers


  • Octal-Channel Multi-Protocol Linear Equalizer Supporting up to 28 Gbaud NRZ Interfaces
  • Integrated 2x2 Cross-point with Pin or Register Control for Mux, Fanout, and Signal Crossing Applications
  • Low Power Consumption: 93 mW / Channel (Typical)
  • No Heat Sink Required
  • Linear Equalization for Seamless Support of Link Training, Auto-Negotiation, and FEC Pass-Through
  • Extends Channel Reach by 17dB+ Beyond Normal ASIC-to-ASIC Capability at 14 GHz
  • Ultra-Low Latency: 100 ps (Typical)
  • Low Additive Random Jitter
  • Small 8 mm x 13 mm BGA Package with Integrated RX AC Coupling Capacitors for Easy Flow-Through Routing
  • Unique Pinout Allows Routing High-Speed Signals Underneath the Package
  • Pin-Compatible Retimer with Cross-point Available
  • Single 2.5-V ±5% Power Supply
  • –40°C to +85°C Operating Temperature Range

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The DS280MB810 is an extremely low-power, high-performance eight-channel linear equalizer supporting multi-rate, multi-protocol interfaces up to 28 Gbaud NRZ. It is used to extend the reach and improve the robustness of high-speed serial links for backplane, front-port, and chip-to-chip applications.

The DS280MB810 includes a full 2x2 cross-point switch between each pair of adjacent channels which enables 2-to-1 multiplexing and 1-to-2 de-multiplexing applications for failover redundancy, as well as signal cross-over to aid PCB routing. The cross-point can be controlled through pins or the SMBus register interface.

The linear nature of the DS280MB810’s equalization preserves the transmit signal characteristics, thereby allowing the host and link partner ASICs to freely negotiate transmit equalizer coefficients (100G-CR4/KR4). This transparency to the link training protocol facilitates system-level interoperability with minimal effect on the latency. The DS280MB810 supports two-level pulse amplitude modulation (PAM), or NRZ, for symbol rates up to 28 Gbaud and peak signal amplitude within the linear operating range.

Each channel operates independently, and every channel can be configured uniquely. In most application scenarios, the same configuration can be used regardless of data rate.

The DS280MB810’s small package dimensions, optimized high-speed signal escape, and the pin-compatible Retimer portfolio make the DS280MB810 ideal for high-density backplane applications. Simplified equalization control, low power consumption, and ultra-low additive jitter make it suitable for front-port interfaces such as 100G-SR4/LR4/CR4. The small 8-mm x 13-mm footprint easily fits behind numerous standard front-port connectors like QSFP, SFP, CFP, and CDFP without the need for a heat sink.

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Special note

To request IBIS AMI models, and device GUI profile: Request DS280MB810

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 3
Type Title Date
* Datasheet DS280MB810 Low Power 28 Gbps 8 Channel Linear Repeater with Cross-point datasheet (Rev. C) Oct. 13, 2020
Application note Optimal Implementation of 25G-28G Ethernet Retimers versus Redrivers (Rev. A) Jan. 07, 2020
More literature Advanced Signal Conditioning Made Easy and Efficient Jan. 12, 2017

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide
The DS280MB810EVM allows for easy evaluation of the DS280MB810 28 Gbps  8-channel linear repeater with crosspoint. To use this EVM, supply power (2.5V or 3.3V) via standard banana connectors and high-speed traffic via Huber+Suhner 1x8 MXP connectors. Huber+Suhner cable assemblies are not included.

  • Programmable via on-board USB2ANY and EVM software
  • Supports data rates up to 28Gbps
  • EVM supports single supply (2.5V or 3.3V)

Design tools & simulation

PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SPICE-based analog simulation program
TINA-TI TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
document-generic User guide

Reference designs

2-port 100GbE/40GbE/10GbE QSFP28 Signal Conditioner Reference Design
TIDA-00427 This verified reference design is a signal conditioning solution for front-port QSFP28 supporting two 100GbE ports compatible with 100G-CR4/SR4/LR4, 40G-CR4/SR4/LR4 and 10G SFF-8431 requirements. The design is applicable to optical and passive/active copper cables. It allows for reach extension (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
NFBGA (ZBL) 135 View options

Ordering & quality

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