SN74ALS157ADBR

Overview

The SN74ALS157ADBR is a quad 1-of-2 data selector/multiplexer from the Texas Instruments ALS logic series. It features four independent multiplexers, each selecting one of two data inputs based on a common select line. The device operates within a supply voltage range of 4.5 V to 5.5 V and exhibits a propagation delay of 14 ns. It is housed in a 16-pin SOIC package and supports surface-mount installation with an operating temperature range of 0°C to +70°C.

Feature Summary

• Provides four independent 2-to-1 data selection paths controlled by a single select input.
• Delivers high-speed signal routing with a propagation delay of 14 nanoseconds.
• Compatible with standard TTL input levels for straightforward interface integration.

Applications

• Data routing in digital communication systems
• Address decoding circuits
• Signal switching in test equipment

Procurement Notes

Verify the specific suffix 'DBR' against the manufacturer's official documentation to confirm the exact tape-and-reel packaging configuration and pinout compatibility. Ensure that the selected component matches the required SOIC-16 footprint and thermal specifications for the target application environment before finalizing procurement.

Selection Notes

Select this component when designing systems requiring multiple independent data paths with fast switching speeds. The ALS series offers a balance of speed and power consumption suitable for general-purpose digital logic applications. Confirm that the 4.5V to 5.5V supply voltage aligns with the system's power rails and that the 16-pin SOIC package fits the PCB layout constraints.

Part Context

This part belongs to the SN74ALS157 family of multiplexers manufactured by Texas Instruments. It is designed for high-speed digital applications where reliable data selection is critical. The ALS technology provides improved performance over earlier logic families while maintaining compatibility with standard logic interfaces.

Replacement Considerations

Check for direct replacements such as SN74ALS157ANSR or SN74ALS157AN which share the same functional core but may differ in packaging or reel specifications. Verify pin compatibility and electrical characteristics before substituting.