SY55855VKI-TR

Translators, Level Shifters Overview

The SY55855VKI-TR is a fully differential CML/PECL/LVPECL-to-LVDS translator from the SuperLite family. It supports data rates up to 1.5Gbps with a maximum operating frequency of 750MHz. The device operates on a 3.0V to 5.7V power supply and guarantees propagation delays under 700ps and within-device skew below 50ps across the industrial temperature range of -40°C to +85°C. Packaged in a compact 10-pin MSOP, it features LVDS compatible outputs designed for driving 50Ω impedance transmission lines.

Translators, Level Shifters Feature Summary

• Translates CML, PECL, or LVPECL signals to LVDS using a fully differential I/O architecture.
• Provides high-speed logic translation with guaranteed low propagation delay and minimal internal skew.
• Operates over a wide voltage range and temperature spectrum suitable for demanding environments.

Translators, Level Shifters Applications

• High-speed logic systems
• Data communications networks
• Wireless communications infrastructure
• Telecom equipment

Translators, Level Shifters Procurement Notes

Verify that the specific suffix 'VKI' corresponds to the Industrial temperature grade (-40°C to +85°C) and Sn-Pb lead finish as documented in the official ordering information. Confirm package type matches the 10-pin MSOP specification. Ensure compatibility with existing board layouts requiring this specific footprint and pinout configuration before finalizing procurement decisions.

Translators, Level Shifters Selection Notes

Select this component when interfacing legacy CML or PECL sources with modern LVDS receivers. It is appropriate for designs requiring small form factors due to the MSOP packaging. Consider its performance limits regarding the 1.5Gbps throughput capability and the requirement for proper termination on 50Ω media to maintain signal integrity and minimize EMI effects.

Translators, Level Shifters Part Context

This part belongs to Micrel's SuperLite family of high-speed logic devices, characterized by small packaging and high signal integrity. Originally manufactured by Micrel, Inc., these products are now managed under Microchip Technology following acquisition. The SY55855V series specifically addresses the need for reliable voltage level translation between different high-speed signaling standards.

Translators, Level Shifters Replacement Considerations

The SY55855VKG-TR serves as a verified Pb-Free alternative featuring NiPdAu finishes. Both variants share identical electrical specifications and functionality, differing only in environmental compliance and lead material composition. Designers should verify RoHS requirements when substituting between these specific ordering options.

Translators, Level Shifters FAQ

How should unconnected inputs be handled to ensure static logic levels?

Unconnected inputs appear as logic zeros due to internal biasing. To maintain a static logic one, connect the true input to VCC while leaving the complement input unconnected. Direct connection of any input pin to ground is prohibited.

What is the typical output swing for the LVDS signals?

The LVDS outputs specify a typical differential swing of 350mV with a nominal common mode voltage of 1.25V above ground, ensuring low EMI and compatibility with standard LVDS receivers.