DM74ALS153MX

Overview

The DM74ALS153MX is a dual 1-of-4 line data selector/multiplexer manufactured by onsemi. It operates within a supply voltage range of 4.5V to 5.5V and features two independent multiplexing circuits sharing common select inputs A and B. Each circuit includes separate data inputs (C0-C3) and active-high strobe inputs that disable data when high. The device utilizes an Advanced Schottky TTL process, providing propagation delays from select to output between 5ns and 21ns, and from data to output between 3ns and 15ns at VCC=5V with CL=50pF. It is housed in a 16-lead SOIC package.

Feature Summary

• Contains full on-chip decoding to select one-of-four data sources based on a unique two-bit binary code at the Select inputs.
• Features internal overlap capabilities in Select input buffers to prevent invalid output transients during select input changes.
• Includes active-high Strobe inputs that disable associated data inputs and force the corresponding output to the LOW state.

Applications

• Data routing in digital logic systems
• Address decoding applications
• Parallel-to-serial conversion

Procurement Notes

Verify component authenticity through authorized channels as this part may be obsolete or subject to lifecycle changes. Confirm package markings match the specific ordering suffix 'X' for tape and reel packaging. Review the manufacturer's datasheet for current RoHS compliance status and environmental declarations before finalizing procurement specifications.

Selection Notes

Select this component for designs requiring dual independent multiplexing with shared address lines. Ensure the system operates within the specified 4.5V to 5.5V supply range. Verify that the required switching speed meets the maximum propagation delay limits defined in the electrical characteristics table for the target operating temperature.

Part Context

This device belongs to the 74ALS series of logic integrated circuits, known for advanced oxide-isolated, ion-implanted Schottky technology. It is functionally and pin-compatible with the LS family counterpart, facilitating upgrades in existing designs while offering improved switching performance and output transient handling capabilities.

Replacement Considerations

SN74ALS153NSR (Texas Instruments)

FAQ

How do the Strobe inputs affect the operation of the multiplexer?

When the Strobe inputs are at the HIGH level, they disable their associated data inputs and force the corresponding output to the LOW state.

Are the Select inputs shared between the two multiplexer sections?

Yes, the Select inputs A and B are common to both sections of the DM74ALS153.