MC74LCX125DT

Overview

The MC74LCX125DT is a low-voltage quad buffer and line driver from the onsemi 74LCX logic family. It features four non-inverting buffers with three-state outputs, designed for high-speed digital applications. The device operates within a supply voltage range of 2.0V to 3.6V and supports 5V tolerant inputs and outputs, facilitating seamless interfacing between 3.3V systems and legacy 5V components. Packaged in a 14-TSSOP surface-mount format, it offers low static power consumption and robust ESD protection.

Feature Summary

• Provides four independent non-inverting buffer channels with three-state output control for bus-oriented communication.
• Features 5V tolerant inputs and outputs, allowing direct interface between 3.3V logic and 5V peripherals without level shifting.
• Utilizes advanced CMOS technology to achieve low static power dissipation while maintaining high-speed signal propagation.
• Includes internal clamp circuits to suppress transient currents during switching, enhancing system reliability.

Applications

• Memory module address and data buffering in computing systems
• Clock distribution networks requiring low skew and high drive capability
• Interface bridging between 3.3V microcontrollers and 5V peripheral devices
• Portable consumer electronics where low power consumption is critical

Procurement Notes

Verify the complete part number including suffixes such as 'G' for RoHS compliance when ordering. Confirm package type matches design requirements, typically TSSOP-14 for this series. Check manufacturer documentation for specific handling precautions regarding electrostatic discharge during assembly and storage procedures.

Selection Notes

Select this component when designing low-voltage digital interfaces that require isolation or signal strengthening. Ensure the operating voltage aligns with the 2.0V to 3.6V specification. Consider the three-state functionality if bidirectional bus sharing is required. Verify thermal performance under maximum load conditions for the chosen application environment.

Part Context

This device belongs to the 74LCX family of low-voltage CMOS logic ICs manufactured by onsemi. It serves as a standard buffer solution for modern digital designs transitioning from higher voltage standards. The LCX series is characterized by its compatibility with both 3.3V and 5V systems, making it versatile for mixed-voltage circuit architectures.

Replacement Considerations

Compatible substitutes include other 74LCX125 variants from different manufacturers, provided they maintain identical pinouts and electrical characteristics. Verify that alternative parts support the same 5V tolerance and three-state output configuration to ensure functional equivalence in existing designs.