74LCX244SJ

Overview

The Fairchild Semiconductor DM74LCX244SJ is an octal buffer and line driver featuring non-inverting logic with three-state outputs. It operates within a supply voltage range of 2.0V to 3.6V, utilizing advanced CMOS technology for high-speed performance while maintaining low power dissipation. The device provides 5V tolerant inputs and outputs, allowing safe interfacing between low-voltage components and 5V signal environments. Key electrical specifications include a maximum propagation delay of 7.5ns at 2.7V and 6.5ns at 3.3V, alongside output drive capabilities of ±24mA. It supports live insertion and withdrawal, ensuring system reliability during hot-swapping operations.

Feature Summary

• Features five-volt tolerant inputs and outputs for seamless interface with legacy systems
• Supports live insertion and withdrawal without causing system disruption
• Implements patented noise and EMI reduction circuitry for signal integrity

Applications

• Memory address drivers in computing systems
• Clock distribution networks
• Bus-oriented transmitter and receiver circuits

Procurement Notes

Verify the specific suffix 'SJ' against official datasheets to confirm package type and tape/reel configuration. Ensure compatibility with RoHS standards if required by your manufacturing process. Cross-reference the manufacturer part number with current onsemi or Fairchild documentation to confirm availability status, as component lifecycles may change. Confirm that the operating temperature range meets your environmental requirements before finalizing procurement.

Selection Notes

Select this component when designing low-voltage logic interfaces requiring high-speed buffering and five-volt tolerance. It is suitable for applications needing ±24mA output drive strength and minimal propagation delay. Consider its three-state capability for bus sharing scenarios. Evaluate the SOP-20 package constraints against your PCB layout space. Ensure the 2.0V to 3.6V supply voltage aligns with your system's power rails.

Part Context

This device belongs to the LCX family of low-voltage CMOS logic devices. It serves as a direct replacement for older logic families in modern low-voltage designs. The octal configuration allows for efficient handling of wide data buses. Its design focuses on reducing electromagnetic interference while maintaining fast switching speeds typical of advanced CMOS technologies.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.