SN74AHC139PWRG4

Signal Switches, Multiplexers, Decoders Overview

The SN74AHC139PWRG4 is a dual 2-line to 4-line decoder/demultiplexer from Texas Instruments, designed for high-speed memory decoders and data-transmission systems. It operates within a wide voltage range of 2 V to 5.5 V. The device incorporates two enable inputs and features TTL-voltage compatible inputs. Packaged in a 16-pin TSSOP (PW) format, it supports surface-mount installation and functions reliably across an operating temperature range of -40°C to +85°C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Dual independent 2-to-4 decoding or demultiplexing channels
• Wide supply voltage operation from 2 V to 5.5 V
• TTL-compatible input logic levels
• Dedicated enable inputs for each decoder channel

Signal Switches, Multiplexers, Decoders Applications

• High-speed memory address decoding
• Data-transmission system routing
• Demultiplexing digital signals
• General-purpose logic decoding in embedded systems

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the complete part number including the G4 suffix, which indicates lead-free and RoHS compliance. Confirm the package type is TSSOP-16 and the operating temperature grade matches your design requirements. Ensure the supplier provides official documentation referencing the SN74AHC139 series specifications to guarantee authenticity and functional compatibility with target applications.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when dual independent decoding channels are required within a single package. It is suitable for designs needing TTL-compatible inputs while operating at lower voltages than standard 5 V logic. Consider the TSSOP-16 package for space-constrained PCB layouts. Verify that the 2 V to 5.5 V supply range aligns with the system power architecture before finalizing the selection.

Signal Switches, Multiplexers, Decoders Part Context

This device belongs to the SN74AHC139 family of dual 2-line to 4-line decoders and demultiplexers. It is part of Texas Instruments' broader portfolio of high-speed CMOS logic devices. The AHC series offers performance improvements over standard HC logic, making it appropriate for modern digital systems requiring faster switching speeds and wider voltage flexibility.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Direct substitutes include other SN74AHC139 variants with different packaging or temperature grades, such as SN74AHC139DR or SN74AHC139DWR. Cross-reference pinouts and electrical characteristics carefully when replacing with non-TI equivalents to ensure functional parity.