SN74LV139ANS

Overview

The SN74LV139ANS is a dual 2-to-4-line decoder/demultiplexer from the Texas Instruments 74LV series. It operates on a single power supply ranging from 2V to 5.5V and features low-voltage CMOS technology for high-speed performance with low power consumption. The device includes two independent decoders, each with an active-low enable input that can function as a data input in demultiplexer applications. Outputs are active-low, providing direct addressing capabilities. The component is housed in a 16-pin SOIC package and supports industrial temperature ranges.

Feature Summary

• Dual independent 2-to-4 line decoding functionality within a single integrated circuit
• Active-low enable inputs compatible with demultiplexer data signal routing
• Low-voltage operation supporting systems powered between 2V and 5.5V
• High-speed CMOS construction ensuring low power dissipation

Applications

• Memory address decoding in embedded systems
• Data distribution in demultiplexer configurations
• Chip select generation for peripheral devices
• Control logic for display or indicator arrays

Procurement Notes

Verify the specific suffix 'ANS' against the manufacturer's current datasheet to confirm pinout compatibility and package dimensions. Ensure the ordered variant matches the required voltage range and operating temperature specifications for the target application environment.

Selection Notes

Select this component when a design requires dual decoding channels with low-voltage compatibility. It is suitable for replacing older LS or HC series parts where lower power consumption and wider voltage tolerance are necessary. Confirm that the output drive capability meets the load requirements of the connected circuits.

Part Context

This part belongs to the standard 74LV logic family, designed for low-voltage digital applications. It serves as a functional equivalent to other industry-standard dual decoders but offers improved power efficiency. The device is widely used in consumer electronics and industrial control systems requiring reliable address decoding.

Replacement Considerations

Direct substitutes include the SN74LVC139A and SN74HC139A, provided voltage levels and speed requirements align. Verify pin compatibility before swapping with non-TI equivalents such as those from NXP or ON Semiconductor.