SN74AHC138PWRG4

Signal Switches, Multiplexers, Decoders Overview

The SN74AHC138PWRG4 is a 3-line to 8-line decoder/demultiplexer from the Texas Instruments AHC logic family. It features three binary address inputs and eight active-low outputs, controlled by three enable inputs. The device operates on a single power supply ranging from 2 V to 5.5 V. It utilizes a 16-pin TSSOP surface-mount package. The component supports an operating temperature range of -40°C to +85°C and includes ESD protection structures.

Signal Switches, Multiplexers, Decoders Feature Summary

• Provides decoding or demultiplexing functions with one-hot output activation
• Features three independent enable inputs for flexible system control
• Offers low static power consumption typical of CMOS technology
• Includes clamp diodes on inputs for transient ESD event protection

Signal Switches, Multiplexers, Decoders Applications

• Address decoding for memory and I/O mapping in embedded systems
• Demultiplexing data streams in digital communication interfaces
• Control signal generation for peripheral device selection
• Logic level translation between different voltage domains

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific suffix G4 indicates lead-free and RoHS compliance status according to manufacturer documentation. Confirm the TSSOP-16 package dimensions match PCB footprint requirements. Ensure the operating temperature grade meets environmental specifications. Cross-reference the ordering part number with official TI databases to confirm current production status and availability.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a low-power 3-to-8 decoder is required within the 2V to 5.5V supply range. The AHC series offers faster switching speeds compared to standard HC logic while maintaining compatibility. Consider the TSSOP package for space-constrained surface-mount designs. Verify that the three enable inputs align with system control logic requirements.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the SN74AHC138 family of decoders and demultiplexers manufactured by Texas Instruments. The AHC designation signifies advanced high-speed CMOS technology. The base model SN74AHC138 is available in various packages, with the PWR variant specifically denoting the thin-shrink small-outline package. The G4 suffix typically denotes environmental compliance attributes.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SN74AHC138PWR serves as the non-compliant equivalent. SN74AHCT138PWR provides TTL-compatible input thresholds. SN74LVC138APWR offers lower voltage operation capabilities. SN74HCS138PWR provides short-circuit protection features.