Datasheet > DS40MB200_07

DS40MB200_07

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	1837K
描述
Dual 4.0 Gbps 2:1/1:2 CML Mux/Buffer with Transmit Pre-Emphasis and Receive Equalization

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DS40MB200_07 数据手册

December 6, 2007

DS40MB200

Dual 4.0 Gbps 2:1/1:2 CML Mux/Buffer with Transmit Pre-

Emphasis and Receive Equalization

General Description

Features

The DS40MB200 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 4 Gbps.

Each input stage has a fixed equalizer to reduce ISI distortion

from board traces.

1– 4 Gbps low jitter operation

■

Fixed input equalization

Programmable output pre-emphasis

Independent switch and line side pre-emphasis controls

Programmable switch-side loopback mode

On-chip terminations

All output drivers have 4 selectable steps of pre-emphasis to

compensate for transmission losses from long FR4 back-

planes and reduce deterministic jitter. The pre-emphasis lev-

els 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 test-

ing. All receiver inputs and driver outputs are internally

terminated with 100Ω differential terminating resistors

+3.3V supply

ESD rating HBM 6 kV

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

■

0°C to +85°C operating temperature range

Applications

Backplane or cable driver

■

Redundancy and signal conditioning applications

XAUI, Infiniband

Functional Block Diagram

20021733

200217

www.national.com

12 3 4 5 6 7...16

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