DM74ALS541WMX

Overview

The DM74ALS541WMX is an octal buffer and line driver featuring 3-STATE outputs, manufactured by onsemi. It utilizes an advanced oxide-isolated ion-implanted Schottky TTL process to deliver high-speed performance comparable to the DM74ALS240A series. The device operates within a supply voltage range of 4.5V to 5.5V and supports a free-air operating temperature from 0°C to +70°C. Key electrical characteristics include a maximum propagation delay of 14ns (LOW-to-HIGH) and output drive currents of -15mA (HIGH) and 24mA (LOW). It is housed in a 20-Lead Small Outline Integrated Circuit (SOIC) package.

Feature Summary

• Features a data flow-thru pinout configuration with inputs and outputs located on opposite sides of the package to enhance circuit board layout efficiency.
• Incorporates P-N-P input structures that reduce DC loading on driving circuits.
• Utilizes a 2-input NOR control gate for 3-STATE operation, placing all eight outputs in a high impedance state if either G1 or G2 is HIGH.

Applications

• High-speed bus-oriented memory and address drivers
• Clock drivers and buffer circuits
• General-purpose octal buffering applications

Procurement Notes

Verify the specific ordering code suffix to confirm the package type, as the DM74ALS541 is available in SOIC, SOP, and PDIP variants. Ensure the procurement matches the required tape and reel specification by checking for the 'X' suffix. Confirm RoHS compliance status and moisture sensitivity level prior to finalizing orders to align with assembly requirements.

Selection Notes

Select this component when a non-inverting octal buffer with 3-STATE capability is required for systems operating at standard 5V logic levels. The choice is driven by the need for high drive current and fast switching speeds provided by the ALS technology. Consider the physical dimensions of the 20-Lead SOIC package during PCB footprint design to ensure proper mounting and thermal dissipation.

Part Context

This part belongs to the 74ALS logic family, known for its advanced low-power Schottky performance. It serves as a direct functional equivalent to other octal buffers like the DM74ALS240A but distinguishes itself through its specific pinout arrangement. The device is designed to interface between different logic families while maintaining signal integrity over long traces.

Replacement Considerations

Public confirmed substitute part numbers: SN74ALS541DWR, SN74ALS541-1NSR.