MC74HCT244ADG

Overview

The MC74HCT244ADG is an octal buffer and line driver manufactured by onsemi, belonging to the HCT logic series. It features eight non-inverting inputs with three-state outputs housed in a 20-pin SOIC-Wide package. The device operates within a supply voltage range of 4.5 V to 5.5 V. Key electrical parameters include a propagation delay of 20 ns at 5 V, high-level output current of -6 mA, and low-level output current of 6 mA. It supports a wide operating temperature range from -55°C to +125°C.

Feature Summary

• Provides octal buffering for digital signals with non-inverting logic functionality.
• Features three-state outputs allowing multiple drivers to share bus lines without interference.
• Compatible with TTL logic levels due to HCT series design specifications.

Applications

• High-speed data acquisition systems requiring signal buffering.
• Clock distribution circuits for timing synchronization.
• Memory address and data bus drivers in computing architectures.

Procurement Notes

Verify the specific suffix 'DG' against the manufacturer's official datasheet to confirm the package type and tape/reel or tube packaging configuration. Ensure the component meets RoHS compliance requirements if mandated by your assembly process. Cross-reference the ordering code with authorized distributors to confirm availability and authenticity before finalizing procurement.

Selection Notes

Select this component when an octal buffer with three-state capability is required for 5V CMOS applications interfacing with TTL-compatible inputs. The HCT series ensures compatibility with standard logic families while offering improved speed over older HC variants. Consider the wide operating temperature range if the application involves industrial or automotive environments.

Part Context

This part belongs to the MC74HCT244A family of octal buffers. It serves as a fundamental building block for digital logic designs, providing signal isolation and drive strength. The device is widely used in general-purpose digital systems where reliable data transmission and bus management are critical for system stability.

Replacement Considerations

Check for direct equivalents such as MM74HCT244MTC or other manufacturers' 74HCT244 variants. Verify pinout compatibility and electrical characteristics like propagation delay and output current to ensure seamless integration into existing designs without circuit modification.