MC74HC244ADWG

Overview

The MC74HC244ADWG is an octal 3-state noninverting 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 provides high noise immunity, low input current, and drive capability for 15 LSTTL loads. Propagation delay ranges from 96 ns at 2.0 V to 15 ns at 6.0 V. It is housed in a SOIC-20 wide package.

Feature Summary

• Octal 3-state noninverting buffer design with dual active-low output enables
• High noise immunity characteristic of CMOS devices
• Outputs directly interface to CMOS, NMOS, and TTL logic families
• Compatible with standard CMOS outputs and LSTTL outputs when pullup resistors are used

Applications

• Three-state memory address drivers
• Clock drivers
• Bus-oriented systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and shipping quantity. Ensure the component meets RoHS compliance requirements if applicable to your manufacturing process. Confirm that the operating temperature range aligns with your system specifications before finalizing procurement.

Selection Notes

Select this component for applications requiring octal buffering with high-speed performance across a wide voltage range. Consider the HC series for compatibility with standard CMOS outputs and lower power consumption compared to HCT variants. Verify pinout compatibility with LS244 designs if replacing legacy components in existing circuits.

Part Context

This part belongs to the MC74HC244A family of octal buffers. It shares identical pinouts with the LS244 device, facilitating direct upgrades in designs utilizing older logic families. The HC series offers improved speed and power characteristics over standard TTL equivalents while maintaining functional compatibility.

Replacement Considerations

MC74HCT244ADWG