74LCX126M

Overview

The Fairchild Semiconductor 74LCX126M is a low-voltage quad buffer featuring five-volt tolerant inputs and outputs. It operates within a supply voltage range of 2.0V to 3.6V and utilizes advanced CMOS technology for high-speed performance with low power dissipation. The device integrates four independent non-inverting buffers, each equipped with an output enable control pin. Packaged in a 14-pin TSSOP or SOIC format, it supports industrial temperature ranges from -40°C to +85°C.

Feature Summary

• Provides four independent non-inverting buffer channels with individual output enable controls
• Features five-volt tolerant inputs allowing direct interfacing between 3.3V systems and 5V peripherals
• Utilizes advanced CMOS technology to achieve high-speed operation while maintaining low static power consumption

Applications

• Level shifting interfaces between 3.3V logic controllers and 5V memory devices
• Driving bus lines in low-voltage digital communication systems
• Buffering signals in portable battery-operated electronic equipment

Procurement Notes

Verify the specific suffix code (e.g., MTC, N) to confirm the exact package type and reel configuration required for your assembly process. Confirm RoHS compliance status as manufacturing sources may vary between Fairchild and ON Semiconductor. Ensure the operating voltage range matches your system design before procurement.

Selection Notes

Select this component when interfacing low-voltage logic with higher voltage environments requiring input tolerance. Compare propagation delay specifications against your system timing requirements. Consider the number of channels needed versus alternative packages if board space is constrained.

Part Context

This part belongs to the 74LCX family of low-voltage CMOS logic devices. It serves as a buffer variant within the broader 74-series logic ecosystem, designed specifically for applications requiring voltage translation and signal integrity in modern low-power digital circuits.

Replacement Considerations

Equivalent parts include the 74LCX125 (inverting version) and 74LVC126 (different voltage characteristics). Verify pin compatibility and electrical parameters before substituting with generic equivalents.