SN74LVC157ADRE4

Overview

The SN74LVC157ADRE4 is a quadruple 2-line to 1-line data selector/multiplexer from the LVC logic family. It operates within a supply voltage range of 1.65V to 3.6V and features inputs compatible with 5.5V signals, facilitating translation in mixed-voltage systems. The device provides four independent multiplexing channels sharing a common address select input (A/B) and an active-low output strobe (G). It is housed in a 16-pin SOIC package.

Feature Summary

• Supports low-voltage operation down to 1.65V for power-sensitive applications
• Provides 5.5V-tolerant inputs for direct interfacing with 5V logic sources
• Includes active-low output strobe for synchronized data routing control

Applications

• Mixed 3.3V/5V system environments requiring signal translation
• Data routing and selection in digital logic circuits
• Address decoding and bus switching applications

Procurement Notes

Verify that the ordering suffix 'E4' corresponds to the specific lead-free material finish and manufacturing standard required by your design specifications. Confirm the package type matches the footprint on your PCB layout. Ensure the component meets the environmental compliance standards mandated for your final assembly process.

Selection Notes

Select this component when a quad multiplexer with 5.5V input tolerance is required alongside low-voltage core operation. Verify that the maximum propagation delay at your target operating voltage satisfies your timing constraints. Ensure unused inputs are tied to defined logic levels to prevent undefined operational states.

Part Context

This part belongs to the SNx4LVC157A series of quadruple 2-line to 1-line data selectors. The series includes variants such as SN74LVC157ADR and SN74LVC157APWR, which share identical logical functionality but differ in packaging options like TSSOP or tube quantities. The 'A' designation indicates enhanced performance characteristics over previous generations.

Replacement Considerations

SN74LVC157ADR

FAQ

How does the device handle mixed voltage levels?

The inputs accept voltages up to 5.5V, allowing them to be driven directly by 5V devices while the core operates at lower voltages between 1.65V and 3.6V.

What is the function of the G pin?

The G pin is an active-low output strobe. When high, all outputs are forced low; when low, the selected data inputs are routed to the outputs.