SY100ELT28ZI

Translators, Level Shifters Overview

The SY100ELT28ZI is a dual translation logic IC manufactured by Microchip Technology, integrating both PECL-to-TTL and TTL-to-differential PECL translator functions within a single package. Designed for high-speed signal conversion, it operates on a +5V power supply and supports a maximum toggle frequency of 700 MHz for PECL signals and 160 MHz for TTL signals. The device guarantees propagation delays of less than 5.5 ns for PECL-to-TTL conversion and under 1.35 ns for TTL-to-PECL conversion. It features internal PECL input pulldown resistors and provides default output states when inputs are left open. The component is housed in an 8-pin SOIC package and is rated for industrial operating temperatures ranging from -40 °C to +85 °C.

Translators, Level Shifters Feature Summary

• Dual-directional translation capability converting between differential PECL and standard TTL logic levels within one integrated circuit.
• High-frequency operation supporting up to 700 MHz toggle rates for PECL applications and 160 MHz for TTL interfaces.
• Integrated safety features including internal PECL input pulldown resistors and defined default output states for open or low-input conditions.
• Compact physical design utilizing an 8-pin small outline package suitable for space-constrained backplane signal transmission.

Translators, Level Shifters Applications

• Backplane signal transmission requiring bidirectional voltage level translation
• High-speed clock distribution systems interfacing different logic families
• Data communication links connecting PECL sources to TTL destinations

Translators, Level Shifters Procurement Notes

Verify the specific ordering suffix 'ZI' corresponds to the 8-pin SOIC package variant rather than the MSOP option. Confirm that the industrial temperature range (-40°C to +85°C) aligns with your environmental requirements. Check current production status as datasheets may indicate recommendations against new designs. Ensure proper termination networks are included in your schematic to maintain signal integrity at high frequencies.

Translators, Level Shifters Selection Notes

Select this component when a single package must handle both directions of translation between PECL and TTL domains. It is appropriate for designs requiring guaranteed AC parameters over a wide temperature range without needing separate chips for each direction. Consider the 8-pin SOIC footprint constraints and verify that the 5V supply voltage matches your system architecture before finalizing the bill of materials.

Translators, Level Shifters Part Context

This part belongs to the SY10/100ELT28 family of translators originally developed by Micrel, which was subsequently acquired by Microchip Technology. The series includes variants with different packaging options such as MSOP and SOIC, as well as commercial and industrial temperature grades. The ELT28 specifically addresses the need for compact, dual-function translation solutions in legacy high-speed digital systems.

Translators, Level Shifters Replacement Considerations

SY10ELT28ZI

Translators, Level Shifters FAQ

What happens to the outputs if the PECL inputs are left open?

If the PECL inputs are left open, the QECL output will default to a high state due to the internal pullup structure.

Does the device support single-ended PECL inputs?

Yes, the device accepts single-ended PECL inputs, though it is designed primarily for differential signaling. The common mode range allows for single-ended operation within specified voltage limits.

What is the maximum operating frequency for the TTL interface?

The maximum toggle frequency for the TTL interface is guaranteed to be greater than 160 MHz across the specified temperature range.