Datasheet > DS25BR400_08

DS25BR400_08

更新时间： 2024-09-16 04:15:11

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
14页	299K
描述
Quad 2.5 Gbps CML Transceiver with Transmit De-Emphasis and Receive Equalization

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DS25BR400_08 数据手册

March 21, 2008

DS25BR400

Quad 2.5 Gbps CML Transceiver with Transmit

De-Emphasis and Receive Equalization

General Description

Features

The DS25BR400 is a quad 250 Mbps – 2.5 Gbps CML

transceiver, or 8-channel buffer, for use in backplane and ca-

ble applications. With operation down to 250 Mbps, the

DS25BR400 can be used in applications requiring both low

and high frequency data rates. Each input stage has a fixed

equalizer to reduce ISI distortion from board traces. The

equalizers are enabled through two control pins. These con-

trol pins provide flexibility in applications where ISI distortion

may vary from one direction to another. All output drivers have

four selectable steps of de-emphasis to compensate for trans-

mission loss. The de-emphasis blocks are also grouped in

fours. In addition, the DS25BR400 also has loopback control

capability on four channels. All the CML drivers have 50Ω

termination to Vcc. All receivers are internally terminated with

differential 100Ω.

250 Mbps – 2.5 Gbps low jitter operation

■

Optional Fixed Input Equalization

Selectable Output De-emphasis

Individual Loopback Controls

On-chip Termination

+3.3V supply

Lead-less eLLP-60 pin package

(9mmx9mmx0.8mm, 0.5mm pitch)

−40°C to +85°C Industrial Temperature Range

6 kV ESD Rating, HBM

■

Applications

Backplane or cable driver

■

Signal buffering and repeating

Simplified Application Diagram

20194240

201942

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