100EL11MX

Overview

The Fairchild Semiconductor MC100EL11MX is a single differential ECL fanout buffer with a 1:2 output ratio. It operates within a supply voltage range of 4.2 V to 5.5 V and supports surface-mount installation in an 8-SOIC package (0.154 inch width). The device provides two differential outputs for clock distribution applications, functioning as a dedicated clock buffer within the 100EL logic series.

Feature Summary

• Single circuit differential ECL fanout buffer
• 1:2 input-to-output signal distribution ratio
• Operates on 4.2 V to 5.5 V power supply
• Available in 8-SOIC surface-mount package

Applications

• Differential clock distribution networks
• ECL logic system buffering
• High-speed digital signal routing

Procurement Notes

Verify the specific ordering suffix MX against manufacturer documentation to confirm packaging details such as bulk tube quantities. Ensure compatibility with existing 8-SOIC footprints during procurement planning. Cross-reference the Fairchild part number with current onsemi equivalents if sourcing from updated inventories.

Selection Notes

Select this component when a single-stage differential ECL buffer with a 1:2 split is required. Confirm that the 4.2 V to 5.5 V operating voltage aligns with the target system power rails. Verify that the 8-SOIC package dimensions fit the available PCB real estate and thermal constraints.

Part Context

This component belongs to the 100EL series of high-speed ECL logic devices manufactured by Fairchild Semiconductor. It serves as a fundamental building block for distributing clock signals across multiple loads while maintaining signal integrity in differential formats.

Replacement Considerations

Check for cross-referenced parts from onsemi, which acquired Fairchild's semiconductor business. Verify pinout and electrical specifications match exactly before substituting.