MC74HCT244ADWG

Overview

The MC74HCT244ADWG is an octal buffer and line driver manufactured by onsemi, belonging to the HCT logic series. It features eight non-inverting inputs and outputs with three-state capability, 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. Static current is specified at 4 uA, while maximum power dissipation reaches 500 mW. The component supports surface mount installation and functions reliably across an extended temperature range from -55°C to +125°C.

Feature Summary

• Provides octal buffering with three-state output control for bus-oriented systems
• Ensures TTL-compatible input levels through HCT CMOS technology
• Supports wide industrial operating temperatures for robust performance

Applications

• Bus-oriented memory and address drivers
• Clock drivers and buffer circuits
• Line drivers in digital communication interfaces

Procurement Notes

Verify the specific suffix ADWG corresponds to the SOIC-Wide-20 package and tube packaging configuration. Confirm RoHS compliance status and moisture sensitivity level requirements prior to integration. Ensure the ordering quantity aligns with standard factory pack sizes to avoid partial reel issues. Cross-reference the manufacturer part number with official datasheets to validate pinout compatibility.

Selection Notes

Select this component when designing systems requiring octal buffering with three-state isolation. The HCT series ensures compatibility with TTL logic families while offering CMOS noise immunity. Consider the 20 ns propagation delay and 500 mW power dissipation limits for thermal management. Verify that the 4.5 V to 5.5 V supply range matches the system power architecture.

Part Context

This part belongs to the MC74HCT244A series of octal buffers and line drivers. It is designed for high-speed digital applications requiring multiple buffered outputs. The device integrates three-state controls to prevent bus contention during data transmission. It serves as a fundamental building block for complex digital logic designs involving parallel data paths.

Replacement Considerations

Compatible substitutes include MM74HCT244MTC and MC74HCT244ADTR2G-Q. Verify package type differences between SOIC-Wide and TSSOP variants. Check if alternative versions offer different propagation delays or current drive capabilities.