MC74HC244ADWR2G

Overview

The MC74HC244ADWR2G 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 equivalent to 15 LSTTL loads. Packaged in a SOIC-20 wide configuration, it supports surface-mount installation and complies with JEDEC standards.

Feature Summary

• Octal 3-state noninverting buffering for bus-oriented systems
• Wide operating voltage range from 2.0 V to 6.0 V
• High noise immunity characteristic of CMOS devices
• Outputs directly interface to CMOS, NMOS, and TTL logic

Applications

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

Procurement Notes

Verify the specific ordering suffix 'DWR2G' corresponds to the SOIC-20 Wide package and tape & reel shipping quantity of 1000 units. Confirm RoHS compliance and Pb-free status as indicated by the 'G' suffix. Ensure the application environment remains within the recommended operating temperature range of -55°C to +125°C.

Selection Notes

Select this component when interfacing standard CMOS outputs or LSTTL outputs (with pullups) to High-Speed CMOS inputs. It serves as a direct pinout replacement for LS244 devices. Consider the HC series for wider voltage flexibility compared to HCT variants, which are restricted to 4.5 V to 5.5 V operation.

Part Context

This part belongs to the MC74HC244A family of octal buffers. It shares identical pinouts with legacy LS244 components while offering improved CMOS performance characteristics. The device functions as the noninverting counterpart to the HC240A/HCT240A family, providing dual 4-bit buffering capabilities with independent control lines.

Replacement Considerations

MC74HCT244ADWR2G