SN74ALS153NSR

Overview

The SN74ALS153NSR is a dual 1-of-4 data selector/multiplexer from the Texas Instruments ALS logic family, housed in a 16-pin SOP package. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range of 0°C to 70°C. The device features two independent multiplexing sections with common select inputs A and B, and dedicated strobe (enable) inputs for each section. Electrical characteristics include a low-level output current of 24 mA and a high-level output current of -2.6 mA at 4.5 V. Propagation delays vary based on input source: up to 21 ns for select inputs and up to 15 ns for data inputs under standard test conditions.

Feature Summary

• Contains dual independent 1-of-4 multiplexers with shared binary decoding logic
• Provides separate strobe inputs for individual section enable/disable control
• Supports parallel-to-serial conversion and cascading configurations

Applications

• Multiplexing multiple data lines into a single output channel
• Parallel-to-serial data conversion circuits
• Cascaded n-line to n-line data routing systems

Procurement Notes

Verify the specific ordering suffix 'SR' corresponds to the SOP-16 tape and reel packaging configuration. Confirm that the component meets RoHS compliance standards as indicated in the manufacturer's packaging addendum. Ensure the selected variant aligns with the required commercial temperature range specifications for your application environment.

Selection Notes

Select this component when designing systems requiring dual independent 4-input multiplexing within a compact surface-mount footprint. Consider the ALS series performance characteristics regarding speed and power consumption relative to system requirements. Verify compatibility with existing TTL-compatible logic levels and ensure adequate thermal management for the specified operating temperature range.

Part Context

This part belongs to the SN74ALS153 series of dual 1-of-4 data selectors manufactured by Texas Instruments. It is functionally compatible with other devices in the 74ALS logic family, offering improved speed over standard LS equivalents while maintaining similar pinouts. The NSR suffix specifically denotes the small-outline package variant supplied in tape and reel format for automated assembly processes.

Replacement Considerations

The SN74AS153NSR serves as a higher-performance alternative within the same package. Designers may also consider the SN74ALS153DR for SOIC-16 tape and reel applications or the SN74ALS153N for through-hole DIP-16 implementations depending on board layout constraints.