MC74ACT244DTR2

Overview

The MC74ACT244DTR2G is an octal buffer and line driver featuring three-state outputs, manufactured by onsemi. It operates within a supply voltage range of 4.5 V to 5.5 V. The device provides non-inverting logic with eight input channels and corresponding outputs. Key electrical parameters include a propagation delay of 11 ns at 5 V, high-level output current of -24 mA, and low-level output current of 24 mA. Static current is specified at 8 uA, with a maximum power dissipation of 200 mW. It functions reliably across an operating temperature range from -40°C to +85°C.

Feature Summary

• Octal configuration providing eight independent non-inverting buffer channels for parallel data handling.
• Three-state output capability allows direct connection to bus systems without additional interface hardware.
• ACT logic series ensures compatibility with standard TTL inputs while maintaining CMOS performance characteristics.

Applications

• Bus-oriented memory and address drivers
• Clock drivers and buffer circuits
• Transceivers and bidirectional bus protocols

Procurement Notes

Verify the complete part number includes the trailing 'G' suffix (MC74ACT244DTR2G) to confirm RoHS compliance and specific manufacturing lot details. Confirm the package type matches the required TSSOP-20 footprint for PCB layout integration. Ensure the ordering quantity aligns with the standard reel packaging specifications provided by the manufacturer.

Selection Notes

Select this component when interfacing between 5V CMOS logic and TTL-compatible devices requiring high drive strength. The ACT series offers faster switching speeds compared to standard HC or HCT variants. Consider the thermal dissipation limits and ensure adequate board space for the TSSOP-20 package dimensions during design phase.

Part Context

This component belongs to the MC74ACT family of logic integrated circuits produced by onsemi. It serves as a successor to earlier AC series buffers, offering improved speed and noise immunity. The device is categorized under buffers and line drivers within the broader logic IC portfolio, designed for high-performance digital signal processing applications.

Replacement Considerations

Direct pin-to-pin replacements may include the MC74AC244DTR2G for lower voltage operation or the MC74HCT244ADWG for different input threshold requirements. Verify electrical specifications carefully, as variations in propagation delay and drive current exist between AC, ACT, and HCT sub-families.