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DS42BR400TSQ PDF预览

DS42BR400TSQ

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 /
页数 文件大小 规格书
14页 299K
描述
Quad 4.25 Gbps CML Transceiver with Transmit De-Emphasis and Receive Equalization

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DS42BR400TSQ 数据手册

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March 27, 2008  
DS42BR400  
Quad 4.25 Gbps CML Transceiver with Transmit  
De-Emphasis and Receive Equalization  
General Description  
Features  
The DS42BR400 is a quad 250 Mbps – 4.25 Gbps CML  
transceiver, or 8-channel buffer, for use in backplane and ca-  
ble applications. With operation down to 250 Mbps, the  
DS42BR400 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 grouped in fours and are enabled through two  
control pins. These control pins provide customers flexibility  
where ISI distortion may vary from one direction to another.  
250 Mbps – 4.25 Gbps Fully Differential Data Paths  
Optional Fixed Input Equalization  
Selectable Output De-emphasis  
Individual Loopback Controls  
■
■
■
■
■
■
On-chip Termination  
Lead-less eLLP-60 pin package (9 mm x 9 mm x 0.8 mm,  
0.5 mm pitch)  
−40°C to +85°C Industrial Temperature Range  
6 kV ESD Rating, HBM  
■
■
All output drivers have four selectable steps of de-emphasis  
to compensate against transmission loss across long FR4  
backplanes. The de-emphasis blocks are also grouped in  
fours. In addition, the DS42BR400 also has loopback control  
capability on four channels. All CML drivers have 50Ω termi-  
nation to VCC. All receivers are internally terminated with  
differential 100Ω.  
Applications  
Backplane driver or cable driver  
■
■
Signal repeating, buffering and conditioning applications  
Simplified Application Diagram  
20182440  
© 2008 National Semiconductor Corporation  
201824  
www.national.com  
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DS42BR400TSQ 替代型号

型号 品牌 替代类型 描述 数据表
DS42BR400TSQ/NOPB TI

功能相似

 具有发送去加重功能和接收均衡功能的四通道、4.25Gbps CML 收发器 | NKA |

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 		4.25 Gbps 2:1/1:2 CML Mux/Buffer with Transmit Pre-Emphasis and Receive Equalization 36-WQ
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