467-5125-A62

## **VHDM-HSDTM** 

## **High-bandwidth for Differential Applications** 

- **De facto industry standard for high-speed differential backplane applications** 

- **eHSD[®] is fully backwards compatible with VHDM-HSD delivering as much as 10 dB lower crosstalk** 

- **eHSD is designed to support up to 10 Gbps backplane designs** 

- **Modular design allows all the features and functionality required in a system to be integrated in a single robust connector** 

Amphenol’s VHDM-HSD™ connector is a shielded, high-density, high-speed press-fit connector system optimized for differential pair architectures. With the addition of the enhanced performance eHSD® connector, data rates up to 10 Gbps are now achievable. 

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- **25-38 real differential pairs per linear inch** 

- **RoHS compliant** 

**Designed and verified for 10 Gbps data rates, eHSD delivers lower crosstalk beyond 5 GHz** 

## **System Upgrades Made Easy** 

## **The Amphenol TCS Advantage** 

"By offering design solutions and advice related to signal integrity between the chip, the design of the PCB, and finally, the connector, Amphenol TCS has the total signal path covered. This type of system solution approach provides an advantage over connector-only manufacturers." 

- Fleck Research 

Industry Leading Connectors 

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Printed Circuit Backplanes<br>**----- End of picture text -----**<br>


Scale systems to next generation speeds without costly re-designs. The eHSD connector supports higher data rates with a 3-5X reduction in wafer-to-wafer crosstalk.  Insertion loss at 10 GHz is < 2 dB.  The eHSD 5-Row connector meets the latest IEEE 802.3ap standard for 10 Gbps serial data rate capability. 

With an identical mating interface and envelope, the eHSD connector is fully backwards mate compatible with existing VHDM-HSD slots. Designers can use eHSD to extend the life of existing designs, reduce development costs and speed higher performance systems to market. 

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## **Optimize Performance** 

VHDM-HSD is formatted with the same modularity features and full breadth of component solutions as me the single-ended version, VHDM®. This modularity and its inherent design flexibility allows designers to incorporate both differential and single-ended requirements in the same connector and optimize system designs. 

Create customized slot configurations by mixing any combination of the VHDM, VHDM-HSD and eHSD modules on the same rear organizing stiffener. 

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Integrated Backplane Systems<br>**----- End of picture text -----**<br>


- VHDM-HSD - high-speed differential signals 

- eHSD - up to 10 Gbps performance 

- VHDM - single-ended, high-density connectors 

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Design and Applications Solutions<br>**----- End of picture text -----**<br>


- VHDM H-Series - single-ended, high-density with greater signal integrity 

- VHDM L-Series - single-ended, shieldless for low-speed connections 

|**Version**|**Density**|**Minimum Slot Pitch**|
|---|---|---|
|38 real differential pairs per linear inch<br>22mm<br>**• VHDM-HSD 8-Row**<br>(15 real differentialpairsper 10mm)|||
|25 real differential pairs per linear inch<br>18mm<br>**• VHDM-HSD 6-Row**<br>(10 real differentialpairsper 10mm)|||
|25 real differential pairs per linear inch<br>15mm<br>**• VHDM-HSD 5-Row**<br>(10 real differentialpairsper 10mm)|||
|38 real differential pairs per linear inch<br>22mm<br>**• eHSD 8-Row**<br>(15 real differentialpairsper 10mm)|||
|25 real differential pairs per linear inch<br>15mm<br>**• eHSD 5-Row**<br>(10 real differential pairs per 10mm)|||



Amphenol TCS VHDM-HSD, VHDM, and eHSD are trademarks or registered trademarks of Amphenol Corporation.  Information contained in this 44 Simon Street document is summary in nature and subject to change without notice. Appearance of the final, delivered product may vary Nashua, NH 03060 from the photographs shown herein. Patents: 6,379,188, 6,503,103, and 6,554,647.  Other patents pending. 603.879.3000 

Shanghai, China  +86.21.5836.5500 Dublin, Ireland  +353.1.241.4000 

© Amphenol Corporation 2008 • All rights reserved • Printed in USA 

ATCS-209-0108-1K 

www.amphenol-tcs.com