Datasheet > DS25MB200_07

DS25MB200_07

更新时间： 2024-11-23 04:06:59

品牌	Logo	应用领域
美国国家半导体 - NSC		复用器
页数	文件大小	规格书
14页	320K
描述
Dual 2.5 Gbps 2:1/1:2 CML Mux/Buffer with Transmit Pre-Emphasis and Receive Equalization

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DS25MB200_07 数据手册

April 9, 2008

DS25MB200

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

Emphasis and Receive Equalization

General Description

Features

The DS25MB200 is a dual signal conditioning 2:1 multiplexer

and 1:2 fan-out buffer designed for use in backplane redun-

dancy applications. Signal conditioning features include input

equalization and programmable output pre-emphasis that en-

able 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 sys-

tem testing. All receiver inputs are internally terminated with

100Ω differential terminating resistors. All drivers are inter-

0.6–2.5 Gbps low jitter operation

■

Fixed input equalization

Programmable output pre-emphasis

Independent switch and line side pre-emphasis controls

Programmable switch-side loopback modes

On-chip terminations

HBM ESD rating 6 kV on all pins

+3.3V supply

Lead-less LLP-48 package (7mm x 7mm x 0.8mm, 0.5mm

pitch)

■

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

■

nally terminated with 50Ω to V_CC

Applications

Backplane or cable driver

■

Redundancy and signal conditioning applications

Functional Block Diagram

20182333

201823

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