SN74ALS157ANSR

Overview

The SN74ALS157ANSR is a quad 1-of-2 data selector/multiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and features a propagation delay of 14 ns. The device contains four independent circuits, each selecting one of two inputs based on a common select line. It is housed in a 16-SOIC package with surface mount installation. The component supports an operating temperature range from 0°C to +70°C.

Feature Summary

• Integrates four independent multiplexing channels for parallel data selection
• Utilizes a single common select input to control all four channels simultaneously
• Provides high-speed signal routing capabilities suitable for digital logic applications

Applications

• Data routing in digital systems
• Signal selection in microprocessor interfaces
• Address decoding circuits

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure correct packaging and compliance status. Confirm that the SOIC-16 package dimensions match the target PCB footprint requirements. Check for any recent product change notifications regarding material composition or manufacturing site changes before finalizing procurement plans.

Selection Notes

Select this component when multiple data sources require switching through a single path using a unified control signal. Ensure the system voltage remains within the specified 4.5 V to 5.5 V range. Consider the 14 ns propagation delay relative to the system clock speed to verify timing compatibility.

Part Context

This part belongs to the SN74ALS157A series of logic integrated circuits. It is designed for high-speed applications requiring low power consumption compared to standard TTL logic. The ALS series offers improved performance characteristics while maintaining pinout compatibility with earlier generations of similar logic families.

Replacement Considerations

SN74ALS157ANRE4 and SN74ALS157ANSRG4 are confirmed substitute part numbers.