MC74HC240ADTR2

Overview

The MC74HC240ADTR2G is an octal 3-state inverting buffer and line driver manufactured by onsemi. It operates within a supply voltage range of 2.0 V to 6.0 V and supports an operating temperature from -55°C to +125°C. The device features two active-low output enables and provides high noise immunity characteristic of CMOS devices. Propagation delays vary with voltage, ranging from 80 ns at 2.0 V down to 14 ns at 6.0 V. It utilizes a TSSOP-20 package and is designed for use in memory address drivers and clock drivers.

Feature Summary

• Octal 3-state inverting buffer/line driver functionality
• Compatible with standard CMOS outputs and LSTTL outputs when pull-up resistors are used
• High noise immunity characteristic of CMOS technology

Applications

• 3-state memory address drivers
• Clock drivers
• Sub-oriented systems

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and shipping quantity. Confirm RoHS compliance status and Pb-free designation as indicated in the manufacturer's ordering information. Ensure the component matches the required automotive or industrial specifications if applicable.

Selection Notes

Select this component for applications requiring octal buffering with inverting logic and 3-state control. Consider the HC series compatibility with both CMOS and TTL loads. Evaluate the propagation delay requirements against the available supply voltage range to ensure signal integrity in the target circuit design.

Part Context

This part belongs to the MC74HC240A family of high-performance silicon-gate CMOS logic devices. It serves as a direct pinout replacement for LS240 devices while offering improved performance characteristics typical of the HC series. The device is designed to interface directly with various logic families including CMOS, NMOS, and TTL.

Replacement Considerations

MC74HC240ADTR2G-Q