MC74HC240ANG

Overview

The MC74HC240ANG 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 features two active-low output enables. The device utilizes high-performance silicon-gate CMOS technology, providing low input current and high noise immunity. It is designed for use with 3-state memory address drivers, clock drivers, and other sub-oriented systems. The component has a chip complexity of 120 FETs or 30 equivalent gates.

Feature Summary

• Outputs directly interface to CMOS, NMOS, and TTL logic families
• Compatible with standard CMOS outputs and LSTTL outputs when pullup resistors are used
• Complies with JEDEC Standard No. 7A requirements
• Features high noise immunity characteristic of CMOS devices

Applications

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

Procurement Notes

Verify the specific package suffix against official documentation, as 'ANG' may indicate a PDIP-20 variant not explicitly detailed in the provided datasheet excerpt which lists DWG (SOIC) and TGR (TSSOP). Confirm RoHS compliance status and ensure the ordering suffix matches the required lead form and moisture sensitivity level for the target application environment.

Selection Notes

Select this component for applications requiring octal buffering with inverting functionality and 3-state control. Ensure the design accommodates the 2.0 V to 6.0 V operating voltage range. Verify that the load requirements do not exceed the 15 LSTTL drive capability per output. Consider the propagation delay specifications relative to the system clock speed at the intended supply voltage.

Part Context

This part belongs to the MC74HC240A series of octal buffers. It shares pinout compatibility with LS240 devices. The HC240A is functionally similar to the HC244A but differs in inversion polarity. The series is characterized by high-speed operation and low power consumption typical of advanced CMOS logic families.

Replacement Considerations

Direct substitutes include MC74HC240ADWG and MC74HC240ADTR2G from onsemi. Cross-manufacturer equivalents such as SN74HC240 from Texas Instruments may be considered if pinout and electrical characteristics match.