MC100LVEL38DWR2

Clock Generators, PLLs, Frequency Synthesizers Overview

The MC100LVEL38DWR2 is a high-speed clock generator IC from the onsemi 100EL series, designed for differential ECL/PECL applications. It features a single circuit configuration with a 1:4 input-to-output ratio, supporting maximum frequencies up to 1.2 GHz. The device operates within a supply voltage range of 4.2V to 5.7V and is housed in a 20-SOIC package (0.295" width). It accepts NECL or PECL inputs and provides four differential ECL outputs. The component is rated for an operating temperature range of -40°C to +85°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Supports differential NECL/PECL inputs and four differential ECL outputs
• Maximum operating frequency of 1.2 GHz
• 1:4 clock distribution ratio without internal PLL or frequency multiplication
• Available in a 20-SOIC surface-mount package

Clock Generators, PLLs, Frequency Synthesizers Applications

• High-speed clock generation for telecommunications infrastructure
• Data communication systems requiring precise timing signals
• Test and measurement equipment utilizing ECL logic families

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

This part number is obsolete and no longer manufactured. Verification of availability should focus on the direct replacement MC100EL38DWR2G. Buyers must confirm RoHS compliance status, as the original MC100EL38DWR2 was non-compliant, while the 'G' suffix typically indicates Green/RoHS-compliant versions. Supply chain checks are required due to discontinuation.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select the MC100LVEL38DWR2G as the primary alternative for new designs. Ensure compatibility with existing 5V ECL power rails, as this device requires a 4.2V to 5.7V supply. Verify that the PCB layout supports differential signaling for both input and output traces to maintain signal integrity at 1.2 GHz speeds.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The MC100EL38 belongs to the 100EL family of high-speed ECL components. It serves as a buffer/driver variant within the broader MC100LVEL38 series, which includes variants like the MC100LVEL38DWG. The 'DWR2' suffix denotes the specific tape-and-reel packaging format for the SOIC-20 package.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The direct substitute is MC100EL38DWR2G. This replacement maintains the same functional specifications but updates manufacturing compliance. No other cross-manufacturer substitutes are publicly confirmed.