Datasheet > DS25MB100_0712

DS25MB100_0712

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
16页	995K
描述
2.5 Gbps 2:1/1:2 CML Mux/Buffer with Transmit De-Emphasis and Receive Equalization

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DS25MB100_0712 数据手册

December 6, 2007

DS25MB100

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

Emphasis and Receive Equalization

General Description

Features

The DS25MB100 is a signal conditioning 2:1 multiplexer and

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

or cable driving applications. Signal conditioning features in-

clude input equalization and programmable output de-em-

phasis that enable data communication in FR4 backplane up

to 2.5 Gbps. Each input stage has a fixed equalizer to reduce

ISI distortion from board traces. All output drivers have four

selectable levels of de-emphasis to compensate for trans-

mission losses from long FR4 backplane or cable attenuation

reducing deterministic jitter. The de-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 receiv-

er inputs and driver outputs are internally terminated with

100Ω differential terminating resistors.

2:1 multiplexer and 1:2 buffer

■

0.25–2.5 Gbps fully differential data paths

Fixed input equalization

Programmable output de-emphasis

Independent de-emphasis controls

Programmable loopback modes

On-chip terminations

HBM ESD rating 5.5 kV on all pins

+3.3V supply

■

Low power, 0.45 W typical

Lead-less LLP-36 package

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

■

Applications

Backplane or cable driver

■

Redundancy and signal conditioning applications

CPRI/OBSAI

Functional Block Diagram

20208901

202089

www.national.com

12 3 4 5 6 7...16

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DS25MB100TSQ	NSC	获取价格	2.5 Gbps 2:1/1:2 CML Mux/Buffer with Transmit De-Emphasis and Receive Equalization
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