MC10H189L

Overview

The MC10H189L is a Hex Inverter with Enable manufactured by onsemi, housed in a 16-lead Ceramic Dual-In-Line Package (CDIP). It operates within the MECL 10H logic family and functions as a functional duplication of the standard MECL 10K family part. The device provides six inverting channels controlled by a common enable input. Electrical characteristics are defined at a supply voltage of VEE = -5.2 V ±5%. Propagation delay from data to output is typically 1.3 ns, while the enable-to-output delay ranges from 0.7 ns to 2.3 ns across operating temperatures. Power dissipation is typically 180 mW per package under no-load conditions.

Feature Summary

• Provides hex inverting functionality controlled by a single common enable input
• Features improved noise margins over the full operating voltage and temperature range
• Offers voltage compensated operation for stable performance
• Maintains compatibility with the standard MECL 10K family pinout

Applications

• High-speed digital signal inversion
• MECL 10K compatible system upgrades
• Clock distribution networks requiring enable control

Procurement Notes

Verify that the specific order suffix 'L' corresponds to the CDIP-16 ceramic package configuration. Confirm that the application environment supports the required negative power supply voltage of -5.2 V. Ensure thermal management accounts for the typical power dissipation of 180 mW per package. Check for RoHS compliance requirements if lead-free variants are necessary, noting that Pb-Free packages utilize different ordering suffixes.

Selection Notes

Select this component when a high-speed hex inverter with a global enable feature is required. It serves as a direct drop-in replacement for MECL 10K inverters where faster propagation delays are needed without increasing power consumption. Consider the CDIP-16 package constraints for through-hole mounting. Verify that the differential output requirements align with MECL logic levels.

Part Context

This device belongs to the MECL 10H series, which offers enhanced speed compared to the legacy MECL 10K family. The MC10H189 specifically integrates an enable function into a hex inverter topology. It is designed for applications demanding rapid switching speeds and reliable noise immunity in high-frequency digital circuits.

Replacement Considerations

The datasheet explicitly states that the MC10H189 is a functional and pinout duplication of the standard MECL 10K family part.