SY100ELT21LZI

Translators, Level Shifters Overview

The SY100ELT21LZI is a single differential LVPECL-to-LVTTL translator manufactured by Microchip Technology. It operates on a single +3.3V power supply and features a typical propagation delay of 2.0ns with a maximum input frequency of 275MHz. The device provides 24mA TTL outputs and utilizes an 8-pin SOIC package. It supports industrial temperature ranges from -40°C to +85°C and includes VBB reference output for interface flexibility.

Translators, Level Shifters Feature Summary

• Translates differential LVPECL signals to LVTTL levels using a single 3.3V supply
• Features low skew design suitable for clock or data signal translation
• Includes VBB reference output allowing differential, single-ended, or AC-coupled interfaces
• Provides added stability under open input conditions by forcing the output low

Translators, Level Shifters Applications

• Clock signal translation in high-speed digital systems
• Data signal level shifting between LVPECL and LVTTL domains
• Applications requiring minimal space and low power consumption

Translators, Level Shifters Procurement Notes

Verify that the ordering suffix ZI corresponds to the Industrial temperature range (-40°C to +85°C) and Sn-Pb lead finish as documented in the manufacturer's ordering information. Confirm the package type is 8-lead SOIC (Z8-1). Ensure compatibility with system voltage requirements of +3.3V only.

Translators, Level Shifters Selection Notes

Select this component when translating LVPECL inputs to LVTTL outputs is required within a 3.3V environment. The SY100 variant specifically aligns with positive ECL 100K logic levels. Consider the 2.0ns typical propagation delay and 275MHz maximum frequency for timing-sensitive designs.

Translators, Level Shifters Part Context

This part belongs to the Precision Edge SY10/100ELT21L family of translators. The SY100 series is distinguished by its compatibility with positive ECL 100K logic levels, whereas the SY10 series supports positive ECL 10H levels. Both share identical pinouts and functional characteristics.

Translators, Level Shifters Replacement Considerations

SY100ELT21LZC (Commercial Temperature Range)

Translators, Level Shifters FAQ

How does the device behave under open input conditions?

Under open input conditions, the /D input is biased at a VCC/2 voltage level while the D input is pulled to ground. This configuration forces the Q output low to provide added circuit stability.

What is the function of the VBB pin?

The VBB pin serves as a reference output that allows the device to support differential, single-ended, or AC-coupled interfaces. If utilized, it should be bypassed to VCC with a 0.01µF capacitor.