MC10H189MELG

Overview

The MC10H189MELG is a hex inverter with enable, part of the MECL 10H family. It operates on dual supplies ranging from -4.94V to -5.46V. The device provides six independent inverters controlled by a common enable input; outputs are low when enabled high and invert inputs when enabled low. It features a typical propagation delay of 1.3 ns and power dissipation of 180 mW per package under no-load conditions. The component is housed in a 16-SOEIAJ surface-mount package.

Feature Summary

• Provides functional and pinout compatibility with the standard MECL 10K family while delivering improved propagation delay performance without increasing power-supply current consumption.
• Features voltage compensation design that maintains an improved noise margin of 150 mV across the full operating voltage and temperature range.

Applications

• High-speed digital logic inversion circuits requiring precise timing control
• MECL 10K system upgrades requiring faster switching speeds
• Data-to-output signal processing applications

Procurement Notes

Verify the specific ordering suffix 'MELG' corresponds to the SOEIAJ-16 package configuration and lead-free status as documented in the manufacturer's ordering information table. Confirm that the procurement channel sources directly from authorized distributors to ensure compliance with RoHS directives and material composition standards specified for this variant.

Selection Notes

Select this component when upgrading existing MECL 10K designs to benefit from reduced propagation delays without altering power supply requirements or board layout. Ensure the application supports the required dual negative voltage supply rails within the specified tolerance. Verify that the 16-SOEIAJ package dimensions fit the target PCB footprint constraints.

Part Context

This device belongs to the MECL 10H series, which offers enhanced speed characteristics compared to the legacy MECL 10K family. The MC10H189 specifically implements a hex inverter topology with a shared enable function, designed for high-frequency digital applications where signal integrity and switching speed are critical parameters.

Replacement Considerations

The datasheet identifies the MC10H189 as a functional and pinout duplication of the standard MECL 10K family part. Specific substitute part numbers beyond this general family equivalence are not provided in the documentation.

FAQ

How does the Enable input affect the output state?

When the Enable input is in the high state, all outputs are forced low. When the Enable input is in the low state, the hex inverting function is active, and the outputs follow the inverted input signals.

What is the relationship between MC10H189 and MECL 10K?

The MC10H189 serves as a functional and pinout duplicate of the standard MECL 10K family part but provides a 100% improvement in propagation delay without any increase in power-supply current.