74LCX16240TTR

Overview

The STMicroelectronics 74LCX16240TTR is a low-voltage CMOS 16-bit bus buffer featuring 3-state inverting outputs with 5V tolerant inputs and outputs. Fabricated using sub-micron silicon gate and double-layer metal wiring C2MOS technology, it provides high-speed performance at 3.3V comparable to the 5V AC/ACT family while maintaining lower power consumption. The device operates within a voltage range of 2.0V to 3.6V, ensuring compatibility with standard logic families.

Feature Summary

• Features 5V tolerant inputs and outputs for interfacing between different signal environments
• Provides symmetrical output impedance with guaranteed PCI bus levels at specified currents
• Includes power-down protection on both inputs and outputs to prevent excessive current draw
• Offers balanced propagation delays with high ESD immunity against static discharge

Applications

• Three-state memory address drivers
• High-speed data bus buffering applications
• Low-power and high-speed 3.3V system designs

Procurement Notes

Verify the specific ordering code suffix to confirm the tape and reel packaging format required for automated assembly processes. Ensure that the component's operating temperature range aligns with your system's environmental specifications. Confirm that the TSSOP-48 package dimensions match your PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring 16-bit wide data paths with high-speed transfer rates. It is suitable for applications needing direct interface with 5V signals while operating from a 3.3V supply. Consider its low power consumption and robust ESD protection features for reliable operation in dense digital circuits.

Part Context

This part belongs to the 74LCX series of low-voltage CMOS logic devices manufactured by STMicroelectronics. The LCX family is designed to replace older 5V logic families in modern low-voltage applications. The 16240 variant specifically functions as a 16-bit bus buffer, providing essential signal isolation and driving capabilities for complex digital architectures.

Replacement Considerations

Check for pin-compatible alternatives within the same 74LCX family or other manufacturers offering equivalent 16-bit bus buffers. Verify that any substitute maintains the same 5V tolerance and 3-state output characteristics to ensure seamless integration without circuit redesign.