74LCX244MTCX

Overview

The onsemi 74LCX244MTCX is an octal buffer and line driver featuring non-inverting logic with three-state outputs. It operates within a supply voltage range of 2.3V to 3.6V, ensuring compatibility with low-voltage systems while maintaining 5V tolerance for both inputs and outputs. The device utilizes advanced CMOS technology to achieve high-speed operation with a maximum propagation delay of 6.5ns at 3.3V. It provides symmetrical output drive capabilities of ±24mA and exhibits low static power consumption with a maximum quiescent current of 10µA. Packaged in a 20-pin TSSOP surface-mount format, it supports live insertion and withdrawal applications.

Feature Summary

• Provides five-volt tolerant inputs and outputs for seamless interfacing between low-voltage and legacy five-volt logic environments.
• Features three-state outputs that enable bus-oriented transmission and memory address driving applications.
• Incorporates patented noise and electromagnetic interference reduction circuitry to enhance signal integrity.
• Supports hot-swapping operations through power-down protection that maintains high-impedance states.

Applications

• Memory address drivers
• Clock drivers
• Bus-oriented transmitters and receivers

Procurement Notes

Verify the specific manufacturer source, as this component was originally developed by Fairchild Semiconductor and is now part of the onsemi portfolio. Confirm the package type matches the required 20-pin TSSOP configuration. Ensure the voltage specifications align with the target system's operating range of 2.3V to 3.6V. Check for RoHS compliance and lead-free status if environmental regulations apply to the final assembly.

Selection Notes

Select this component when designing systems requiring interface between 3.3V or 2.5V logic and 5V tolerant buses. It is suitable for applications demanding low power dissipation alongside high-speed data transfer. Consider its thermal performance and ESD protection ratings for robustness in industrial environments. Evaluate the need for three-state control signals to manage bus contention effectively during multi-master operations.

Part Context

This device belongs to the LCX series of low-voltage CMOS logic components. It shares functional similarities with other octal buffers but is distinguished by its specific voltage tolerance and speed characteristics. The MTCX suffix indicates a tape-and-reel packaging format suitable for automated surface-mount assembly processes.

Replacement Considerations

The MM74HC244MTCX serves as a potential alternative, though it operates at higher voltages up to 6V. Verify pin compatibility and electrical characteristics before substitution. Other variants within the same family may offer different packaging options or slight performance variations.