74LCX244SJX

Overview

The onsemi 74LCX244SJX is a low-voltage CMOS octal buffer and line driver featuring non-inverting logic with three-state outputs. Designed for operation within a 2.0 V to 3.6 V supply voltage range, it provides high-speed performance while maintaining low power dissipation. The device supports 5 V tolerant inputs and outputs, enabling safe interfacing between low-voltage components and 5 V signal environments. It includes power-down protection to ensure high-impedance states during inactive periods.

Feature Summary

• Features five-volt tolerant inputs and outputs for mixed-voltage system compatibility
• Provides eight non-inverting buffers with independent three-state control
• Incorporates patented noise and EMI reduction circuitry for signal integrity

Applications

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

Procurement Notes

Verify the specific suffix SJX against the manufacturer's current datasheet to confirm package type and tape-and-reel specifications. Ensure the component meets RoHS compliance requirements for your assembly process. Cross-reference the ordering number with official onsemi documentation to avoid confusion with similar LCX series variants that may have different electrical characteristics or pin configurations.

Selection Notes

Select this component when designing systems requiring interface between 3.3 V logic and 5 V buses without level shifters. The LCX series offers superior speed compared to standard HC families at lower voltages. Consider the SOP-20 package constraints and thermal dissipation capabilities relative to the ±24 mA output drive strength required by the load.

Part Context

This part belongs to the 74LCX family of low-voltage CMOS logic devices manufactured by onsemi. The LCX series is engineered to replace older AC/ACT technologies in portable and battery-operated applications due to its reduced operating voltage and power consumption profile while maintaining comparable switching speeds.

Replacement Considerations

Public confirmed substitute part numbers include DM74LCX244SJX from Fairchild Semiconductor and ST74LCX244 from STMicroelectronics. These alternatives share identical pinouts and logical functions but require verification of specific propagation delay and leakage current parameters.