MC74ACT541DWR2G

Overview

The MC74ACT541DWR2G is an octal buffer and line driver from the 74ACT logic family, manufactured by onsemi. It features non-inverting outputs with three-state capability, housed in a 20-SOIC surface-mount 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 7.5 ns at 5 V, output currents of ±24 mA, and a static current of 8 µA. It supports a wide operating temperature range from -40°C to +85°C.

Feature Summary

• Provides eight non-inverting buffers with three-state outputs for bus isolation
• Features TTL-compatible inputs for direct interface with TTL logic circuits
• Utilizes a through-bol architecture with inputs and outputs on opposite sides to facilitate PCB layout

Applications

• Memory address and data bus driving
• Clock signal distribution
• Microprocessor output port interfacing

Procurement Notes

Verify the specific suffix DWR2G corresponds to the SOIC-20 package and tape-and-reel orientation required for your assembly process. Confirm RoHS compliance status and moisture sensitivity level (MSL 3) handling requirements during storage and soldering. Ensure the ordering part number matches the exact logic family (ACT) and pinout configuration specified in the design schematic.

Selection Notes

Select this component when high-speed buffering with TTL input compatibility is required in a 5V system. The ACT series offers faster switching speeds compared to standard AC or HC families while maintaining CMOS noise immunity. The through-bol pin arrangement is critical for designs needing direct connection to microprocessor ports without complex trace routing.

Part Context

This part belongs to the MC74ACT541 series of octal buffers. It is the non-inverting counterpart to the MC74ACT540. The device shares functional similarities with other octal drivers like the 74AC244 but differs in pinout geometry. It is designed for high-density digital systems requiring robust signal integrity and bus management capabilities.

Replacement Considerations

Direct substitutes include MC74ACT541DTG (TSSOP-20 package) for space-constrained designs. Cross-family replacements like MC74AC541DWR2G offer similar functionality but with different speed and drive characteristics. Verify package dimensions and thermal dissipation limits when substituting.