MC100EL11D

Clock Buffers, Drivers Overview

The MC100EL11D is a differential 1:2 fanout buffer from the onsemi 100 Series, designed for high-performance ECL applications. It features temperature compensation and internal input pulldown resistors that ensure Q outputs default LOW when inputs are open. The device supports PECL mode with VCC ranging from 4.2 V to 5.7 V (VEE = 0 V) and NECL mode with VEE from −4.2 V to −5.7 V (VCC = 0 V). Key electrical specifications include a maximum propagation delay of 340 ps at 85°C, a typical skew of 5 ps between outputs, and a power supply current of 31 mA. It is housed in an SOIC-8 package.

Clock Buffers, Drivers Feature Summary

• 265 ps typical propagation delay with 5 ps within-device skew
• Supports PECL (4.2 V–5.7 V) and NECL (−4.2 V to −5.7 V) operating modes
• Internal input pulldown resistors maintain stability under open input conditions
• Temperature compensated design included in the 100 Series

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

Verify the specific ordering suffix against the manufacturer's current documentation. The 'DG' suffix indicates a Pb-Free SOIC-8 tube package, while 'DR2G' denotes a tape and reel format. Confirm availability status as some variants may be discontinued or subject to production changes.

Clock Buffers, Drivers Selection Notes

Select this component for designs requiring differential fanout with strict skew requirements. Ensure the power supply configuration matches either PECL or NECL standards. Verify that the PCB layout maintains controlled impedance for the differential inputs and outputs to preserve the specified AC performance characteristics.

Clock Buffers, Drivers Part Context

This device belongs to the MC10EL/100EL family of ECL logic buffers. The 100 Series variant offers improved performance over the standard 10 Series, specifically regarding propagation delay and temperature compensation. It serves as a functional successor to older E111 devices with enhanced speed capabilities.

Clock Buffers, Drivers Replacement Considerations

MC10EL11DG

Clock Buffers, Drivers FAQ

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

The internal clamping circuitry and pulldown resistors cause the Q outputs to go LOW when the inputs are open or pulled to VEE.

What is the maximum toggle frequency for this device?

The maximum toggle frequency is specified as 1.5 GHz.

How does the 100 Series differ from the 10 Series?

The 100 Series includes temperature compensation and exhibits significantly improved within-device skew and propagation delay compared to the 10 Series.