SN74LV138ATPWR

Overview

The SN74LV138ATPWR is a 3-to-8 line decoder and demultiplexer from Texas Instruments' LV logic series. It features three address inputs and eight active-low outputs, controlled by two active-low enable inputs and one active-high enable input. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports surface-mount installation in a TSSOP-16 package. It ensures reliable performance across an extended industrial temperature range from -40°C to +125°C, with a typical propagation delay of 13 ns.

Feature Summary

• Provides decoding and demultiplexing functions for digital signal routing applications
• Features three binary address lines to select one of eight distinct output channels
• Includes multiple enable pins to manage device activation and power states

Applications

• Address decoding in embedded systems
• Data distribution in communication interfaces
• Memory chip selection circuits

Procurement Notes

Verify the specific suffix 'TPWR' against the manufacturer's official documentation to confirm the tape-and-reel packaging configuration and pin compatibility. Ensure that the operating environment remains within the specified voltage and temperature limits to maintain signal integrity and prevent latch-up conditions during operation.

Selection Notes

Select this component when a robust 5V-compatible decoder is required for high-temperature environments. The LV series offers improved switching characteristics compared to older standards while maintaining backward compatibility with standard logic levels. Confirm that the TSSOP-16 footprint aligns with the target PCB layout constraints.

Part Context

This part belongs to the SN74LV138A family of decoders and demultiplexers. The LV designation indicates low-voltage CMOS technology optimized for 5V operation. The TPWR suffix specifically denotes the TSSOP-16 surface-mount package type with reel packaging, distinguishing it from tube or other package variants within the same logical function set.

Replacement Considerations

SN74LV138APWRG4