MC74HC244AFR1

Overview

The MC74HC244AFR1 is an octal 3-state non-inverting buffer and line driver manufactured by onsemi. It utilizes high-performance silicon-gate CMOS technology to provide robust signal buffering capabilities. The device operates within a supply voltage range of 2.0 V to 6.0 V, ensuring compatibility with standard CMOS outputs and LSTTL outputs when pull-up resistors are employed. It features low input current of 1 μA and high noise immunity characteristic of CMOS devices. The component is designed to drive up to 15 LSTTL loads and directly interfaces with CMOS, NMOS, and TTL logic families.

Feature Summary

• Octal 3-state non-inverting buffer and line driver architecture
• High-noise immunity and low input current characteristics
• Direct interface capability with CMOS, NMOS, and TTL logic families

Applications

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

Procurement Notes

Verify the specific suffix 'FR1' against official onsemi documentation to confirm tape-and-reel packaging specifications and moisture sensitivity levels. Ensure the part number matches the exact datasheet revision for accurate electrical parameter validation before integration into design files.

Selection Notes

Select this component when an octal buffer with 3-state output control is required for bus applications. It serves as a pin-compatible replacement for LS244 devices while offering improved CMOS performance. Consider the 2.0 V to 6.0 V operating range for systems requiring flexible voltage levels.

Part Context

This component belongs to the 74HC series of high-speed CMOS logic devices produced by onsemi. It is functionally identical in pinout to the legacy LS244 but utilizes advanced silicon-gate CMOS technology for lower power consumption and higher speed operation compared to older bipolar technologies.

Replacement Considerations

Public confirmed substitute part numbers include MC74HC244ADT and MC74HC244ADTG.