74LCX240MSA

Overview

The Fairchild Semiconductor 74LCX240MSA is a low-voltage octal buffer and line driver featuring five-volt tolerant inputs and outputs. Designed for inverting signal transmission, it operates within a supply voltage range of 1.65V to 3.6V. The device integrates eight independent buffers suitable for memory address driving, clock distribution, and bus-oriented communications. It utilizes advanced CMOS technology to ensure high performance while maintaining compatibility with standard logic families.

Feature Summary

• Provides five-volt tolerant input and output capabilities for mixed-voltage system interfacing
• Functions as an inverting octal buffer or line driver for high-speed data transmission
• Supports direct connection to 5V systems despite lower operating supply voltages

Applications

• Memory address drivers
• Clock drivers
• Bus-oriented communications

Procurement Notes

Verify component status carefully as the 74LCX240 series has been discontinued by Fairchild Semiconductor. Confirm that the specific MS suffix corresponds to the required surface-mount package variant. Ensure replacement strategies account for the obsolescence of this part number in active production lines.

Selection Notes

Select this component when designing systems requiring octal buffering with mixed 5V and low-voltage logic levels. It is appropriate for applications needing inverting functionality and high impedance TTL-compatible inputs. Consider the specific voltage requirements of the target circuit to ensure compatibility with the specified operating range.

Part Context

This part belongs to the LCX family of low-voltage CMOS logic devices. The LCX series is characterized by its ability to interface between 3.3V and 5V logic domains. The 74LCX240 specifically provides eight channels of buffering, distinguishing it from hex or quad variants within the same logical family.

Replacement Considerations

Public confirmed substitute part numbers: MC74LCX240.