MC74HC244AFEL

Overview

The MC74HC244AFEL is an octal 3-state noninverting buffer and line driver manufactured by onsemi. It operates within a supply voltage range of 2.0 to 6.0 V. The device features two active-low output enables controlling eight noninverting outputs. It provides high noise immunity and low input current characteristics typical of CMOS devices. The component is designed for use in memory address drivers, clock drivers, and bus-oriented systems.

Feature Summary

• Octal configuration with two independent active-low output enable controls
• Noninverting signal buffering and line driving capabilities
• High noise immunity and low input leakage current
• Direct interface compatibility with CMOS, NMOS, and TTL logic families

Applications

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

Procurement Notes

Verify the specific suffix 'FEL' against official documentation as it may indicate a specialized packaging or environmental variant not explicitly detailed in standard ordering tables. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the source document matches the exact part number to avoid functional mismatches with similar HC series components.

Selection Notes

Select this component when an octal buffer with 3-state control is required for bus applications. It serves as a pin-compatible replacement for LS244 devices. Consider the 2.0 V to 6.0 V operating range for flexibility in system voltage design. Verify that the input compatibility requirements align with standard CMOS or LSTTL outputs via pullup resistors.

Part Context

This component belongs to the MC74HC244A family of high-performance silicon-gate CMOS logic devices. It shares the same pinout as the LS244, facilitating direct upgrades in existing designs. The family includes variants such as MC74HCT244A for TTL-compatible inputs. The device utilizes a SOIC-20 package structure.

Replacement Considerations

MC74HC244ADWG and MC74HC244ADTG are documented pin-compatible alternatives within the same datasheet.