DS25MB200

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SNLS220F – MARCH 2006 – REVISED FEBRUARY 2009

DS25MB200 Dual 2.5 Gbps 2:1/1:2 CML Mux/Buffer with Transmit Pre-Emphasis and

Receive Equalization

Check for Samples: DS25MB200

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FEATURES

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On-chip terminations

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HBM ESD rating 6 kV on all pins

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0.6–2.5 Gbps low jitter operation

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+3.3V supply

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Fixed input equalization

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Lead-less LLP-48 package (7mm x 7mm x

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Programmable output pre-emphasis

0.8mm, 0.5mm pitch)

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Independent switch and line side pre-

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—40°C to +85°C operating temperature range

emphasis controls

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Programmable switch-side loopback modes

DESCRIPTION

The DS25MB200 is a dual signal conditioning 2:1 multiplexer and 1:2 fan-out buffer designed for use in

backplane redundancy applications. Signal conditioning features include input equalization and programmable

output pre-emphasis that enable data communication in FR4 backplanes up to 2.5 Gbps. Each input stage has a

fixed equalizer to reduce ISI distortion from board traces. All output drivers have 4 selectable steps of pre-

emphasis to compensate for transmission losses from long FR4 backplanes and reduce deterministic jitter. The

pre-emphasis levels can be independently controlled for the line-side and switch-side drivers. The internal

loopback paths from switch-side input to switch-side output enable at-speed system testing. All receiver inputs

are internally terminated with 100

Ω differential terminating resistors. All drivers are internally terminated with 50Ω

Applications

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Backplane or cable driver

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Redundancy and signal conditioning applications

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PRODUCTION DATA information is current as of publication date.

Copyright © 2006–2009, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

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