74AHC139D,112

Signal Switches, Multiplexers, Decoders Overview

The Nexperia 74AHC139D,112 is a dual 2-to-4 line decoder/demultiplexer housed in an SO16 (SOT109-1) plastic small outline package. It decodes two binary weighted address inputs to four mutually exclusive outputs. The device operates with a supply voltage range of 2.0 V to 5.5 V and features Schmitt-trigger inputs for high noise immunity. Propagation delays typically range from 3.9 ns to 11.0 ns depending on load capacitance and voltage. It supports ambient temperatures from -40 °C to +125 °C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Dual independent 2-to-4 decoding or demultiplexing circuits within a single package
• Overvoltage tolerant inputs allowing operation in mixed voltage environments up to 5.5 V
• Schmitt-trigger action on all inputs to ensure clean signal transitions
• CMOS low power dissipation characteristics suitable for energy-efficient designs

Signal Switches, Multiplexers, Decoders Applications

• Address decoding in memory architectures
• Data routing via demultiplexer configurations
• Signal translation between different logic voltage domains
• Control logic for peripheral selection systems

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix '112' corresponds to the standard tape and reel packaging format required by your assembly line. Confirm that the SO16 package dimensions align with your PCB footprint specifications. Ensure the component meets RoHS compliance requirements for your target market regulations before finalizing procurement orders.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when dual independent decoding channels are required in a compact surface-mount form factor. The AHC series offers faster switching speeds compared to standard HC logic while maintaining CMOS compatibility. Verify input voltage levels match the source logic family, as the AHC variant utilizes CMOS input thresholds rather than TTL levels found in HCT variants.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the Nexperia 74AHC logic family, designed for high-speed CMOS applications. It serves as a functional equivalent to industry-standard 74HC139 devices but with optimized performance characteristics. The D package indicates a standard 16-lead Small Outline Package suitable for automated surface mount technology assembly processes.

Signal Switches, Multiplexers, Decoders Replacement Considerations

• 74AHC139D,118
• 74AHCT139D,653

Signal Switches, Multiplexers, Decoders FAQ

Can the enable input function as a data input?

Yes, the enable input can be utilized as the data input for a 1-to-4 demultiplexer application.

What happens to the outputs when the enable input is HIGH?

When the enable input is HIGH, all outputs are forced HIGH regardless of the address input states.