74LCX240WM

Overview

The onsemi 74LCX240WM is a low-voltage octal buffer and line driver featuring five-volt tolerant inputs and outputs. It operates within a supply voltage range of 1.65 V to 5.5 V, utilizing advanced CMOS technology for high-speed performance with low power dissipation. The device provides an inverting logic function with two output enable controls. Key electrical characteristics include a maximum propagation delay of 6.5 ns at 3.3 V and an output drive capability of ±24 mA at 3.0 V. It supports live insertion and withdrawal, ensuring high-impedance states during power transitions.

Feature Summary

• Five-volt tolerant inputs and outputs allow safe interfacing between low-voltage components and 5 V signal environments.
• Supports live insertion and withdrawal by maintaining high-impedance states during power-up or power-down sequences.
• Implements proprietary noise and EMI reduction circuitry to enhance signal integrity in high-speed applications.

Applications

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

Procurement Notes

Verify the specific package variant (SOIC-20W or TSSOP-20) required for your design, as the datasheet covers multiple case outlines. Confirm that the ordering suffix matches the desired shipping quantity and reel specifications. Ensure compatibility with RoHS compliance standards if applicable to your manufacturing requirements.

Selection Notes

Select this component when designing systems requiring bidirectional data transfer or buffering between different voltage domains. The wide operating voltage range accommodates various low-voltage logic families. Consider the ±24 mA drive strength for driving moderate capacitive loads without external buffers.

Part Context

This part belongs to the LCX family of low-voltage CMOS logic devices manufactured by onsemi. The LCX series is engineered to bridge the gap between older 5 V TTL/CMOS standards and modern low-voltage digital systems. It serves as a critical interface component in mixed-voltage circuit designs.

Replacement Considerations

MC74LCX240DWG

FAQ

How does the device handle power-down conditions?

The 74LCX240 features power-down high-impedance inputs and outputs. To ensure the high-impedance state during power up or down, the OE pin should be tied to VCC through a pull-up resistor.

What is the ESD protection rating?

The device offers ESD performance exceeding 2000 V according to the Human Body Model standard.