DM74ALS153N

Overview

The DM74ALS153N is a Dual 1-of-4 Line Data Selector/Multiplexer manufactured by onsemi. It features two independent multiplexing circuits with common Select inputs A and B, and separate Data and Strobe inputs for each section. The device utilizes an Advanced oxide-isolated, ion-implanted Schottky TTL process. It 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. Propagation delays vary based on input type: Select-to-Output ranges from 5ns to 21ns, Data-to-Output from 3ns to 15ns, and Strobe-to-Output from 5ns to 18ns.

Feature Summary

• Contains full on-chip decoding to select one-of-four data sources using a unique two-bit binary code at the Select inputs.
• Incorporates internal overlap features in Select input buffers to prevent invalid output transients during input changes.
• Strobe inputs disable associated data inputs when HIGH, forcing the corresponding output to the LOW state.

Applications

• Data routing in digital systems
• Signal selection in logic circuits
• Multiplexing applications requiring dual channels

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity upon receipt, as the PDIP-16 variant is susceptible to mechanical stress. Ensure storage conditions adhere to moisture sensitivity level requirements to maintain solderability. Cross-reference ordering codes carefully, noting that suffixes indicate specific packaging variations such as tape and reel options.

Selection Notes

Select this component for designs requiring dual independent 4-to-1 multiplexing with common address lines. It offers pin and functional compatibility with LS family counterparts, facilitating legacy upgrades. Consider propagation delay specifications relative to system clock speeds. Verify power supply stability within the 4.5V to 5.5V range to ensure optimal switching performance across the commercial temperature spectrum.

Part Context

This device belongs to the 74ALS logic family, characterized by advanced Schottky technology for improved speed and lower power consumption compared to standard TTL. The DM74ALS153 series provides versatile data handling capabilities. It is part of a broader ecosystem of logic ICs designed for general-purpose digital applications, maintaining industry-standard pinouts for ease of integration into existing circuit architectures.

Replacement Considerations

SN74ALS153NSR (Texas Instruments)

FAQ

How do the Strobe inputs affect the output state?

When a Strobe input is at the HIGH level, it disables the associated data inputs and forces 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 DM74ALS153N.