74AHC139PW,112

Signal Switches, Multiplexers, Decoders Overview

The 74AHC139PW,112 is a dual 2-to-4 line decoder/demultiplexer manufactured by Nexperia. It decodes two binary weighted address inputs to four mutually exclusive outputs. Each decoder includes an active LOW enable input that forces all outputs HIGH when asserted HIGH. The device operates on a single supply voltage ranging from 2.0 V to 5.5 V and features Schmitt-trigger inputs for high noise immunity. It is housed in a 16-lead TSSOP plastic thin shrink small outline package (SOT403-1) with a body width of 4.4 mm.

Signal Switches, Multiplexers, Decoders Feature Summary

• Dual independent 2-to-4 decoding circuits within a single package
• Active LOW enable inputs allow demultiplexer functionality
• Schmitt-trigger action on all inputs for improved noise immunity
• Overvoltage tolerant inputs compatible with mixed voltage environments

Signal Switches, Multiplexers, Decoders Applications

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

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix matches the required package variant. Confirm the temperature range aligns with operational requirements. Ensure compatibility with existing PCB footprint dimensions for the TSSOP16 package. Check for RoHS compliance status if restricted substances are a concern. Validate pinout alignment against schematic designs before procurement.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component for applications requiring dual decoding channels or demultiplexing capabilities. Consider the wide supply voltage range for flexibility in power domains. Evaluate the Schmitt-trigger inputs if signal integrity is critical in noisy environments. Verify that the TSSOP package fits the available board space constraints.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74AHC series of high-speed CMOS logic devices. It shares functional similarities with other 74xx logic families but offers faster switching speeds and lower power consumption. The PW suffix indicates the TSSOP package type, distinguishing it from SOIC or DIP variants within the same logical family.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Check for direct pin-compatible alternatives such as the 74AHCT139PW variant if TTL-level input compatibility is required instead of CMOS levels. Verify that any substitute maintains the same TSSOP16 package dimensions and pin configuration.