74LCX244MSAX

Overview

The onsemi 74LCX244MSAX is a low-voltage CMOS octal buffer featuring five-volt tolerant inputs and outputs. It operates within a supply voltage range of 1.65V to 3.6V, providing non-inverting signal buffering with three-state control. The device supports live insertion and withdrawal capabilities while maintaining high noise immunity through patented EMI reduction circuitry. It offers an output drive current of ±24mA at 3.0V and exhibits a maximum propagation delay of 6.5ns at 3.3V. Designed for memory address driving and bus-oriented applications, it ensures reliable performance in mixed-voltage environments.

Feature Summary

• Five-volt tolerant inputs and outputs enable safe interfacing between low-voltage logic and 5V signal environments.
• Supports live insertion and withdrawal without causing system disruption or electrical interference.
• Implements patented noise and EMI reduction circuitry to enhance signal integrity during high-speed operation.

Applications

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

Procurement Notes

Verify the specific suffix 'MSAX' against the manufacturer's official datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with the required operating temperature range and voltage levels before integration. Cross-reference the part number with authorized distributors to confirm current availability and authenticity, as obsolete variants may exist.

Selection Notes

Select this component when designing systems requiring interface between 1.65V-3.6V logic and 5V buses. It is suitable for applications demanding low power dissipation alongside high-speed data transfer. Consider its three-state output capability for multiplexed bus architectures where line isolation is necessary during inactive periods.

Part Context

This part belongs to the 74LCX series of low-voltage CMOS logic devices manufactured by onsemi. The LCX family is engineered for high-speed operation while maintaining the low power characteristics typical of CMOS technology. It serves as a standard solution for level shifting and buffering in portable and battery-powered electronic devices.

Replacement Considerations

Direct substitutes include the Fairchild Semiconductor 74LCX244 and STMicroelectronics 74LCX244. Verify pinout compatibility and electrical parameters such as propagation delay and output drive strength before substitution.

FAQ

What is the maximum propagation delay of the 74LCX244MSAX?

The maximum propagation delay is 6.5ns when operating at a supply voltage of 3.3V.

Does the device support hot swapping?

Yes, the device supports live insertion and withdrawal, allowing for real-time connection and disconnection without system damage.