74LCX2244WMX

Overview

The Fairchild Semiconductor 74LCX2244WMX is an octal bus transceiver with 3-state outputs, part of the LCX low-voltage CMOS logic family. It operates within a supply voltage range of 2.3V to 3.6V and features 5V tolerant inputs and outputs for interfacing with 5V systems. The device provides bidirectional data transmission controlled by direction (DIR) and output enable (OE) signals. Packaged in a 20-lead Wide SOIC (W), it supports live insertion and offers high noise immunity through patented EMI reduction circuitry.

Feature Summary

• Bidirectional octal bus transceiver with 3-state outputs
• 5V tolerant inputs and outputs for mixed-voltage compatibility
• Patented noise/EMI reduction circuitry for signal integrity
• Supports live insertion and withdrawal operations

Applications

• Memory address drivers
• Clock drivers
• Bus-oriented transmitter/receiver circuits

Procurement Notes

Verify the specific suffix 'WMX' against official datasheets to confirm package type and tape-and-reel specifications. Ensure the component meets RoHS compliance requirements if applicable to your manufacturing standards. Cross-reference the manufacturer's current product status, as legacy logic families may have discontinued variants or updated replacement series.

Selection Notes

Select this component when designing systems requiring bidirectional data transfer between 2.5V or 3.3V logic domains and 5V environments. The 5V tolerance eliminates the need for external level shifters. Consider the 20-Wide SOIC package for PCB layout constraints where wider pin spacing is beneficial compared to standard narrow packages.

Part Context

This device belongs to the Fairchild LCX series, designed for low-power, high-speed applications. It utilizes advanced CMOS technology to achieve performance comparable to faster logic families while maintaining lower power dissipation. The LCX series is characterized by its ability to interface directly with 5V systems despite operating at lower supply voltages.

Replacement Considerations

Check for equivalents such as the MC74LCX2244 from onsemi, which shares the same logical function and pinout. Verify that any substitute maintains the 5V tolerant I/O characteristics and the specific 20-Wide SOIC package dimensions to ensure mechanical compatibility.