74LCX244BQX

Overview

The Fairchild Semiconductor 74LCX244BQX is a low-voltage CMOS octal buffer and line driver featuring non-inverting, three-state outputs. It operates within a supply voltage range of 1.65V to 3.6V and provides 5V tolerant inputs and outputs for safe interfacing with 5V signal environments. The device utilizes advanced CMOS technology to achieve high-speed operation while maintaining low power dissipation. Key electrical specifications include a maximum propagation delay of 6.5ns at VCC = 3.3V and a maximum quiescent current of 10µA. It supports live insertion/withdrawal and offers ±24mA output drive capability.

Feature Summary

• Provides five-volt tolerant inputs and outputs for direct interfacing with 5V signal environments
• Features patented noise and EMI reduction circuitry for improved signal integrity
• Supports live insertion and withdrawal operations without system disruption
• Delivers high-speed performance with low power dissipation through advanced CMOS fabrication

Applications

• Memory address drivers
• Clock drivers
• Bus-oriented transmitter/receiver circuits

Procurement Notes

Verify the specific suffix 'BQX' against official datasheets to confirm package type and tape-and-reel configuration. Ensure compatibility with RoHS standards and lead-free requirements. Confirm operating temperature ranges match application needs. Validate pinout assignments for the specific package variant before integration.

Selection Notes

Select this component when designing systems requiring low-voltage operation with 5V interface compatibility. It is suitable for applications demanding high-speed data buffering with minimal power consumption. Consider its three-state output capability for bus sharing scenarios. Evaluate its ESD protection levels against environmental static discharge risks.

Part Context

This part belongs to the 74LCX logic family, designed for low-voltage digital applications. It serves as an octal buffer, providing eight independent channels for signal conditioning. The device is manufactured using CMOS technology to ensure high noise immunity and low static power consumption compared to older logic families.

Replacement Considerations

Compatible substitutes include MC74LCX244 from onsemi and other 74LCX244 variants from manufacturers like STMicroelectronics. Verify pinout and electrical specifications match before substitution.