MC74HCT244ADW

Overview

The MC74HCT244ADW 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 characteristics 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. Static current is specified at 4 uA, with a maximum power dissipation of 500 mW.

Feature Summary

• Provides eight non-inverting signal paths for buffering applications
• Features three-state outputs to enable bus-oriented connections
• Compatible with TTL logic levels through HCT technology

Applications

• Bus-oriented architectures requiring signal isolation
• Clock drivers for high-speed digital systems
• Memory module address and data buffering

Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and temperature range. Ensure compatibility with system voltage requirements and thermal constraints. Confirm moisture sensitivity handling procedures are followed during assembly. Cross-reference ordering information with manufacturer documentation to avoid substitution errors.

Selection Notes

Select this component when designing circuits requiring octal buffering with three-state control. Consider the HCT series compatibility for interfacing with TTL devices. Evaluate the SOIC-Wide package for suitable PCB layout space. Assess power dissipation limits under maximum load conditions to ensure reliable operation within the specified temperature range.

Part Context

This part belongs to the MC74HCT244A family of octal buffers. It shares functional similarities with other HCT series logic ICs but offers specific pinout and performance characteristics defined by the 244A designation. The device is designed for general-purpose digital logic applications requiring robust signal driving capabilities.