SN74ALS253NSR

Overview

The SN74ALS253NSR is a dual 1-of-4 data selector/multiplexer manufactured by Texas Instruments. It features three-state outputs and operates within a supply voltage range of 4.5 V to 5.5 V. The device utilizes an SOIC-16 surface-mount package and supports an operating temperature range from 0°C to +70°C. Electrical characteristics include a high-level output current of -2.6 mA and a low-level output current of 24 mA.

Feature Summary

• Dual independent 1-of-4 multiplexing circuits
• Three-state output capability for bus driving
• Surface-mount SOIC-16 packaging

Applications

• Data routing in digital systems
• Bus-oriented switching applications
• Multiplexing input signals for processing

Procurement Notes

Verify the component status as obsolete before procurement planning. Confirm the specific suffix 'NSR' corresponds to the SOIC-16 package and tape-and-reel delivery format. Ensure compatibility with existing board layouts designed for this footprint. Cross-reference the manufacturer datasheet for any pinout revisions or environmental compliance updates prior to finalizing orders.

Selection Notes

Select this component when dual independent multiplexing with three-state outputs is required in a compact surface-mount form factor. It is suitable for designs needing to route one of four inputs to a common output line while maintaining bus isolation. Consider the ALS logic family speed and drive capabilities relative to system timing requirements and load conditions.

Part Context

This part belongs to the SN74ALS series of advanced small-scale integration logic devices. It provides dual multiplexing functionality within a standard 16-pin plastic small-outline integrated circuit package. The device is designed for general-purpose digital logic applications requiring signal selection and bus management.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.