MC74ACT541DTR2

Overview

The MC74ACT541DTR2G is an octal buffer and line driver from the 74ACT logic series, manufactured by onsemi. It features eight non-inverting inputs with three-state outputs housed in a 20-TSSOP package. The device operates within a supply voltage range of 4.5V to 5.5V. Key electrical parameters include a propagation delay of 7.5ns at 5V, output currents of ±24mA, and a quiescent current of 8µA. It supports surface-mount installation and functions across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Provides octal buffering with three-state output control for bus-oriented architectures.
• Delivers high drive capability with ±24mA output current sourcing and sinking.
• Ensures low power consumption with minimal quiescent current draw during operation.

Applications

• Clock distribution networks requiring signal buffering.
• Memory data bus drivers for microprocessor systems.
• I/O port expansion in embedded controller designs.

Procurement Notes

Verify the complete part number includes the trailing 'G' suffix (MC74ACT541DTR2G) as this denotes RoHS compliance and green manufacturing status. Confirm the tape and reel packaging format matches production requirements. Cross-reference the datasheet revision to ensure pinout and electrical characteristics align with current design specifications before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring 5V logic compatibility with moderate speed requirements. The ACT series offers faster switching than standard 74LS devices while maintaining CMOS low power characteristics. Ensure the application voltage remains strictly within the 4.5V to 5.5V range to maintain timing accuracy and prevent device damage. Consider thermal dissipation limits if driving multiple loads simultaneously.

Part Context

This integrated circuit belongs to the MC74ACT family of advanced CMOS logic devices. It serves as a direct functional replacement for older bipolar 74LS541 buffers but with improved speed and lower power consumption. The TSSOP-20 package allows for compact PCB layouts compared to traditional DIP packages, facilitating modern surface-mount assembly processes.

Replacement Considerations

The MC74AC541DTR2G is a compatible alternative offering wider voltage tolerance (2V–6V) but slower propagation speeds. Verify that the AC series timing meets system requirements if substituting. Other manufacturers may offer pin-compatible equivalents, but input/output voltage thresholds must be validated against the specific 5V logic levels used in the target design.