MC10H158L

Overview

The MC10H158L is a quad two-input multiplexer from the MECL 10H family, featuring common input select. It provides non-inverting signal routing with high-speed performance and improved noise margins over standard MECL 10K devices. The component operates within a supply voltage range of -4.94V to -5.46V at VEE. It supports an operating temperature range of 0°C to +75°C and dissipates approximately 197 mW of power. Propagation delay is typically 1.5 ns for data paths and up to 2.9 ns for select paths.

Feature Summary

• Provides four independent two-channel multiplexing functions with a shared select line
• Features voltage compensated design ensuring stable operation across operating voltage and temperature ranges
• Delivers significantly faster propagation delays compared to standard MECL 10K equivalents without increasing power consumption

Applications

• High-speed digital signal routing in telecommunications equipment
• Data acquisition systems requiring fast analog or digital switching
• Test and measurement instruments needing precise signal path selection

Procurement Notes

Verify that the specific application environment maintains the required negative supply voltage stability, as the device relies on strict VEE tolerances for correct logic levels. Confirm thermal management capabilities are sufficient to handle typical power dissipation during continuous operation. Ensure compatibility with existing MECL 10K footprints if replacing legacy components, noting the functional equivalence but superior speed characteristics.

Selection Notes

Select this component when system requirements demand faster switching speeds than standard MECL 10K parts can provide while maintaining pinout compatibility. It is suitable for designs where improved noise immunity is critical. Consider the ceramic package options if higher storage temperature limits or specific environmental ruggedness are required beyond standard plastic variants.

Part Context

This part belongs to the MECL 10H series, which represents an evolution of the classic MECL 10K logic family. The 10H series offers enhanced performance metrics while preserving backward compatibility with established designs. The MC10H158 specifically addresses applications requiring multiple parallel data channels to be routed efficiently through a single output path per channel.

Replacement Considerations

MC10H158P (Plastic DIP)

FAQ

How does the MC10H158L differ from the standard MC10K158?

The MC10H158L offers a 100% improvement in propagation delay compared to the MC10K158 while maintaining the same power-supply current and pinout configuration.

What is the function of the SELECT pin?

A high level on the SELECT pin enables inputs D00, D10, D20, and D30, while a low level enables inputs D01, D11, D21, and D31 for all four multiplexers simultaneously.