74LVC138AD,118

Signal Switches, Multiplexers, Decoders Overview

The Nexperia 74LVC138AD,118 is a 3-to-8 line decoder and demultiplexer housed in an SO16 (SOT109-1) package. It decodes three binary weighted address inputs to eight mutually exclusive outputs. The device operates with a supply voltage range of 1.2 V to 3.6 V and features Schmitt-trigger inputs for noise tolerance. It includes three enable inputs (E1, E2 active LOW; E3 active HIGH) allowing parallel expansion. The component supports overvoltage tolerant inputs up to 5.5 V and provides direct interface capability with TTL levels.

Signal Switches, Multiplexers, Decoders Feature Summary

• Features multiple enable inputs for easy parallel expansion to larger decoding configurations
• Provides demultiplexing capability by utilizing active LOW enable inputs as data strobes
• Includes Schmitt-trigger action at all inputs to ensure tolerance for slower input rise and fall times
• Supports direct interfacing with TTL logic levels while maintaining CMOS low power consumption

Signal Switches, Multiplexers, Decoders Applications

• Memory chip select decoding
• Demultiplexing applications using enable inputs as data strobes
• Parallel expansion of decoding lines to 1-of-32 configurations
• Mixed 3.3 V and 5 V environments requiring level translation

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the ordering suffix '118' corresponds to the SO16 plastic small outline package (SOT109-1) with a body width of 3.9 mm. Confirm the temperature range specification matches the -40 °C to +125 °C rating required for the application environment. Ensure compatibility with the specified JEDEC standards for the intended operating voltage range.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a 3-to-8 line inverting decoder or demultiplexer is required within a 1.2 V to 3.6 V supply range. The SO16 package is suitable for surface mount assembly where space constraints allow a 3.9 mm body width. Consider the overvoltage tolerant inputs if interfacing with 5 V devices in mixed-voltage systems without additional level shifters.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74LVC138A family of 3-to-8 line decoders and demultiplexers manufactured by Nexperia. The 'AD' designation indicates the specific SO16 package variant, while ',118' denotes the tape and reel packaging format. It is part of the broader LVC logic series designed for low voltage and high-speed applications.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The 74LVC138APW serves as a pin-compatible alternative in the TSSOP16 package. The 74LVC138ABQ offers a DHVQFN16 package option. Verify that any substitute maintains the same SO16 footprint and electrical characteristics if physical replacement is necessary.