SN74AHC138PWRE4

Signal Switches, Multiplexers, Decoders Overview

The SN74AHC138PWRE4 is a single 3-line to 8-line decoder/demultiplexer from Texas Instruments, belonging to the AHC logic series. It operates within a supply voltage range of 2 V to 5.5 V and features low dynamic power consumption. The device utilizes a 16-TSSOP surface-mount package and supports an operating temperature range from -40°C to +85°C. Propagation delay is specified at 13 ns, with output drive capabilities of 8 mA for both high and low states.

Signal Switches, Multiplexers, Decoders Feature Summary

• Provides three address inputs to select one of eight active-low outputs
• Includes three enable inputs for flexible system control and cascading
• Features low static power consumption due to CMOS technology
• Offers balanced output drive currents for reliable signal transmission

Signal Switches, Multiplexers, Decoders Applications

• Memory address decoding in embedded systems
• Demultiplexing data streams in communication interfaces
• Control logic for peripheral selection in industrial automation
• General-purpose digital signal routing in consumer electronics

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the complete part number including the E4 suffix to confirm lead-free compliance and specific tape-and-reel packaging configuration. Confirm that the 16-TSSOP footprint matches the target PCB design. Ensure voltage levels align with the 2 V to 5.5 V operational range. Check for RoHS directive compliance requirements specific to the destination market before finalizing procurement orders.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a single 3-to-8 decoder is required with low power consumption and wide voltage flexibility. The AHC series offers speed comparable to standard HC logic but with lower power dissipation. Consider the TSSOP package size constraints and thermal performance for the intended application environment. Verify that the three enable inputs meet the system's control logic requirements.

Signal Switches, Multiplexers, Decoders Part Context

This part is a variant of the SN74AHC138 family, distinguished by the PWRE4 suffix indicating a specific reel-based packaging format and environmental compliance. It serves as a direct replacement for non-E4 versions where identical electrical characteristics are required. The device is part of Texas Instruments' broader portfolio of high-speed CMOS logic solutions designed for modern electronic applications.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SN74AHC138PWR is a compatible alternative with identical electrical specifications but may differ in packaging quantity or reel configuration. SN74AHC138PWLE is another variant offering similar functionality with potential differences in lead finish or environmental certification. Verify pin compatibility and electrical parameters before substitution.