DS42MB100

更新时间： 2024-11-23 03:30:35

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	992K
描述
4.25 Gbps 2:1/1:2 CML Mux/Buffer with Transmit De-Emphasis and Receive Equalization

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DS42MB100 数据手册

December 7, 2007

DS42MB100

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

Emphasis and Receive Equalization

General Description

Features

The DS42MB100 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 4.25 Gbps. Each input stage has a fixed equalizer to reduce

ISI distortion from board traces.

2:1 multiplexer and 1:2 buffer

■

0.25 – 4.25 Gbps fully differential data paths

Fixed input equalization

Programmable output de-emphasis

Independent de-emphasis controls

Programmable loopback modes

All output drivers have four selectable levels of de-emphasis

to compensate for transmission losses from long FR4 back-

plane 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 receiver inputs and driver outputs are in-

ternally terminated with 100Ω differential terminating resis-

tors.

On-chip terminations

HBM ESD rating 5.5 kV on all pins

+3.3V supply

■

Lead-less LLP-36 package

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

Applications

Backplane driver or cable driver

■

Redundancy and signal conditioning applications

CPRI/OBSAI

Functional Block Diagram

20209001

202090

www.national.com

12 3 4 5 6 7...16

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