MC10EL11DR2

Clock Buffers, Drivers Overview

The MC10EL11DR2 is a discontinued differential 1:2 fanout buffer from onsemi, designed for high-speed ECL applications. It operates in PECL mode with VCC ranging from 4.2 V to 5.7 V (VEE = 0 V) or NECL mode with VEE from −4.2 V to −5.7 V (VCC = 0 V). Key electrical parameters include a maximum propagation delay of 385 ps at −40°C and 365 ps at +85°C, with a typical delay of 265 ps at 25°C. The device features 5 ps within-device skew, internal input pulldown resistors, and clamping circuitry for open-input stability. It is housed in an SOIC-8 package.

Clock Buffers, Drivers Feature Summary

• Differential 1:2 fanout buffer with 265 ps typical propagation delay
• PECL/NECL compatible with specified operating voltage ranges
• Internal input pulldown resistors and open-input default LOW state
• SOIC-8 surface-mount package

Clock Buffers, Drivers Applications

• High-speed clock distribution networks
• Differential signal buffering in telecommunications equipment
• Test and measurement instrumentation requiring low jitter

Clock Buffers, Drivers Procurement Notes

This specific part number is officially marked as discontinued by the manufacturer and is not recommended for new designs. Verification of current availability requires direct contact with onsemi representatives or authorized distributors, as standard inventory channels may no longer stock this item. Designers should consider alternative active components for new projects.

Clock Buffers, Drivers Selection Notes

Select this component only for legacy system maintenance or replacement where the original design constraints are fixed. Ensure the application supports the required 5.0 V nominal supply for PECL operation or negative supply for NECL. Verify that the SOIC-8 thermal characteristics meet the board's airflow requirements, as performance specifications assume maintained transverse airflow greater than 500 lfpm.

Clock Buffers, Drivers Part Context

The MC10EL11 belongs to the 10 Series ECL family, which lacks the temperature compensation found in the 100 Series (e.g., MC100EL11). It serves as a functional successor to the older E111 device, offering improved skew and propagation delay. The 'DR2' suffix indicates tape and reel packaging, distinct from the tube-packaged 'DG' variant.

Clock Buffers, Drivers Replacement Considerations

Publicly confirmed substitutes include the MC100EL11 series (MC100EL11DG, MC100EL11DR2G), which offers temperature compensation and similar pinouts. Other potential replacements in the same category include the MC10EP11 series for enhanced AC performance.