74LCX126MX

Overview

The 74LCX126MX is a quad bus buffer manufactured by onsemi, belonging to the LCX logic family. It features four independent 1-bit buffers with true outputs and three-state capabilities. The device operates within a supply voltage range of 1.0 V to 3.6 V. It utilizes a 14-pin SOIC package (EIAJ standard). The component supports an operating temperature range from -40 °C to 85 °C. Key electrical characteristics include high noise immunity and low power consumption typical of CMOS technology.

Feature Summary

• Provides four independent unidirectional signal paths for data buffering
• Features three-state outputs to prevent bus contention during inactive states
• Operates across a wide supply voltage range suitable for mixed-signal systems
• Ensures signal integrity through high noise immunity in low-voltage applications

Applications

• Portable battery-powered equipment requiring low voltage operation
• Consumer electronics utilizing mixed 1.8V and 3.3V logic domains
• Computing products involving memory interface buffering
• Telecommunications infrastructure components

Procurement Notes

Verify the specific suffix 'M' against the manufacturer's official datasheet to confirm the exact tape-and-reel packaging configuration and quantity per reel. Ensure the order code matches the required RoHS compliance status and lead-free designation as defined in the current product release notes. Cross-reference the date code and lot information upon receipt to guarantee authenticity and traceability.

Selection Notes

Select this component when a quad bus buffer is required for low-voltage digital interfaces. It is appropriate for designs needing isolation between different voltage domains, specifically those transitioning between 1.8V and 3.3V systems. Consider the SOIC-14 package constraints regarding board space and thermal dissipation requirements relative to the expected load conditions.

Part Context

This part belongs to the LCX series of low-voltage CMOS logic devices. The series is designed to bridge legacy 5V systems with modern 3.3V and 1.8V architectures. The 74LCX126 variant specifically provides buffered output functionality, distinguishing it from inverters or non-inverting buffers without tri-state control.

Replacement Considerations

Direct pin-compatible alternatives may include the MC74LCX126DTR2G or MC74LCX126DT. Verify that substitute parts maintain identical voltage ranges and package dimensions before integration into existing PCB layouts.