MC74HCT244ADWR2

Overview

The MC74HCT244ADWR2 is an octal buffer and line driver from the HCT logic series, manufactured by onsemi. It features eight non-inverting inputs and outputs with three-state capability, housed in a 20-pin SOIC package. The device operates within a supply voltage range of 4.5 V to 5.5 V. It provides high-level and low-level output currents of 6 mA each. The component supports a wide operating temperature range from -55 °C to +125 °C.

Feature Summary

• Octal configuration providing eight independent non-inverting signal paths for parallel data transmission.
• Three-state output control allows multiple drivers to share a bus without electrical contention.
• HCT logic compatibility ensures direct interface with TTL-driven systems while maintaining CMOS noise immunity.

Applications

• Bus-oriented memory and address drivers
• Clock drivers and buffer circuits
• Transceiver buses for bidirectional data flow

Procurement Notes

Verify the complete part number suffix, as 'ADWR2' may indicate specific tape-and-reel packaging or regional variants. Confirm RoHS compliance status through official datasheets. Check for moisture sensitivity levels if storage conditions are critical. Ensure the supplier provides valid traceability documentation for automotive or industrial qualification requirements.

Selection Notes

Select this component when driving eight lines simultaneously with strong current capabilities. The HCT series is suitable for systems requiring TTL-compatible input thresholds. Consider the SOIC-20 package for surface-mount assembly constraints. Evaluate thermal dissipation needs given the extended temperature range and output drive specifications.

Part Context

This part belongs to the 74HCT244 family of octal buffers. It shares functional similarities with other octal three-state drivers but is distinguished by its specific HCT speed and power characteristics. The device is designed for general-purpose digital applications requiring reliable signal buffering and bus isolation in compact form factors.

Replacement Considerations

Direct substitutes include MC74HCT244ADWR2G and MM74HCT244WMX. Verify pinout compatibility and electrical parameters before substitution. Ensure the replacement matches the required operating temperature range and package dimensions for board integration.