74LCX162244MEA

Overview

The Fairchild Semiconductor 74LCX162244MEA is a low voltage 16-bit buffer and line driver featuring 3-state outputs. It incorporates 26-ohm series resistors within the output stage to minimize signal reflections and electromagnetic interference (EMI). The device operates within a supply voltage range of 2.3V to 3.6V and provides 5V tolerant inputs, allowing compatibility with higher voltage logic systems. Packaged in a 48-pin SSOP, it is designed for high-speed memory and address bus applications.

Feature Summary

• Integrates 26-ohm series output resistors to reduce signal ringing and EMI emissions
• Provides 5V tolerant inputs for safe interfacing with legacy 5V logic systems
• Features 3-state outputs to facilitate multi-driver bus architectures

Applications

• Memory address drivers
• Clock distribution networks
• High-speed data bus buffering

Procurement Notes

Verify the specific package suffix 'MEA' corresponds to the 48-lead SSOP configuration required by your PCB footprint. Confirm RoHS compliance status matches current manufacturing standards. Ensure input voltage levels remain within specified tolerances to prevent damage. Check for any recent obsolescence notices from ON Semiconductor following the Fairchild acquisition.

Selection Notes

Select this component when simultaneous 16-bit buffering and EMI suppression are required without external resistors. The integrated 26-ohm resistors simplify layout compared to discrete solutions. Choose this over standard buffers if 5V tolerance is mandatory for inputs while operating at lower core voltages. Consider pin count constraints as the 48-lead SSOP occupies significant board area.

Part Context

This part belongs to the 74LCX family of low-voltage CMOS logic devices. It serves as a specialized variant of the standard 74LCX162244 by including built-in series resistance. The family targets portable electronics and high-density digital systems requiring low power consumption and fast switching speeds.

Replacement Considerations

Direct substitutes include the 74LCX162244MTD (TSSOP package) or 74LCX162244MEAX (tape and reel packaging). Verify that alternative packages maintain identical electrical characteristics and pinout compatibility before substitution.