MC74HC240AF

Overview

The MC74HC240AF is an octal 3-state inverting buffer and line driver manufactured by onsemi. It operates within a supply voltage range of 2 V to 6 V. The device features eight inputs and outputs with high-level output current of -7.8 mA and low-level output current of 7.8 mA. Static current is specified at 4 uA, while operating power supply current reaches 160 uA. Propagation delay varies from 80 ns at 2 V to 14 ns at 6 V. Power dissipation is rated at 500 mW. The component functions within a temperature range of -55 C to +125 C.

Feature Summary

• Provides octal buffering and line driving capabilities with inverting logic polarity
• Features three-state outputs for effective bus line holding and system isolation
• Operates across a wide industrial temperature range for robust environmental performance

Applications

• Bus-oriented memory and address drivers
• Clock distribution buffers
• Signal line drivers for high-noise environments

Procurement Notes

Verify the specific suffix AF against the official datasheet to confirm package type and manufacturing status. Confirm RoHS compliance details directly from the manufacturer's documentation before integration. Ensure the ordering information matches the required pinout and electrical specifications for the target application design.

Selection Notes

Select this component when requiring octal buffering with inverting functionality in a compact surface-mount package. Consider the propagation delay characteristics relative to the operating voltage to ensure signal integrity. Evaluate the power dissipation limits under maximum load conditions to determine adequate thermal management requirements for the enclosure.

Part Context

This part belongs to the MC74HC240A series of logic ICs produced by onsemi. It is categorized under buffers and line drivers within the HC logic family. The device serves as a digital interface component for converting signals between different logic levels or driving multiple loads simultaneously in electronic circuits.

Replacement Considerations

Check for MC74HC240ADWG as a potential alternative with similar electrical characteristics but a different SOIC-20 package configuration. Verify pin compatibility and thermal performance before substituting.