MC100EL57D

Overview

The MC100EL57D is a fully differential 4:1 multiplexer from the onsemi 100 Series, housed in an SOIC-16 package. It operates within a PECL mode range of VCC = 4.2 V to 5.7 V (VEE = 0 V) and an NECL mode range of VCC = 0 V (VEE = −4.2 V to −5.7 V). The device features temperature compensation, internal input pulldown resistors, and multiple VBB outputs for single-ended or AC coupled interfaces. Propagation delay ranges from 350 ps to 580 ps depending on the signal path and temperature.

Feature Summary

• Configurable as either a 4:1 or 2:1 differential multiplexer by leaving the SEL1 line open.
• Includes internally generated VBB reference voltage outputs for single-ended operation and AC coupling rebiasing.
• Features temperature compensation within the 100 Series for stable performance across operating temperatures.
• Q outputs default to LOW when inputs are open or at VEE, ensuring defined states during undefined conditions.

Applications

• High-speed data routing in communication systems
• Signal selection in differential logic circuits
• AC coupled interface applications requiring reference voltage generation

Procurement Notes

Verify component authenticity through authorized channels due to discontinued status. Confirm RoHS compliance and Pb-free packaging specifications. Check for moisture sensitivity level 1 requirements during storage and handling. Ensure proper termination and decoupling per datasheet guidelines to maintain signal integrity.

Selection Notes

Select this component for applications requiring differential ECL multiplexing with temperature compensation. Consider the SOIC-16 package constraints and thermal resistance values. Evaluate power supply requirements against PECL or NECL modes. Verify that the internal pulldown resistors meet input biasing needs without external components.

Part Context

Part of the MC10/100EL57 family, designed for high-performance digital signal processing. The 100 Series variant offers improved characteristics over the 10 Series, including temperature compensation. It serves as a critical element in systems needing fast, reliable signal switching with minimal skew.

Replacement Considerations

MC10EL57/D is functionally equivalent but lacks temperature compensation. Both devices are discontinued; consult onsemi representatives for current alternatives. Ensure any substitute maintains differential ECL compatibility and similar propagation delays.

FAQ

How does the device handle unused differential inputs?

Unused differential inputs should be connected to the VBB pin, which acts as a switching reference voltage for single-ended input conditions.

What is the maximum current limit for the VBB output?

The VBB output must have its sourcing or sinking current limited to 0.5 mA when used.

Can the MC100EL57D operate as a 2:1 multiplexer?

Yes, by leaving the SEL1 line open (pulled LOW via internal resistors), the device functions as a differential 2:1 multiplexer selected by SEL0.