74LVC138AD,112

Signal Switches, Multiplexers, Decoders Overview

The Nexperia 74LVC138AD,112 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 active LOW outputs. The device operates within a supply voltage range of 1.2 V to 3.6 V and features overvoltage tolerant inputs capable of handling up to 5.5 V. It includes Schmitt-trigger action for noise immunity and supports parallel expansion to form larger decoders.

Signal Switches, Multiplexers, Decoders Feature Summary

• Overvoltage tolerant inputs allow direct interfacing with 5 V devices while operating at lower voltages
• Schmitt-trigger action on all inputs provides tolerance for slower rise and fall times
• Multiple enable inputs facilitate easy parallel expansion to create 1-of-32 decoders
• Capable of functioning as an eight-output demultiplexer using enable inputs as data strobes

Signal Switches, Multiplexers, Decoders Applications

• Memory chip select decoding
• Mixed 3.3 V and 5 V environment translation
• Demultiplexing applications requiring mutually exclusive outputs

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the ordering suffix matches the required package type, as the 74LVC138A series is available in multiple configurations including TSSOP and DHVQFN. Confirm that the specific part number corresponds to the SO16 plastic small outline package variant. Ensure compatibility with the intended operating temperature range and voltage levels before finalizing procurement specifications.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when designing circuits requiring low power consumption and high noise immunity in mixed-voltage environments. The wide supply voltage range supports operation from 1.2 V to 3.6 V. Consider the overvoltage tolerant inputs if interfacing directly with 5 V logic without additional level shifting components. Verify package availability against board space constraints.

Signal Switches, Multiplexers, Decoders Part Context

This device belongs to the Nexperia 74LVC138A family of advanced Low-Voltage CMOS logic products. The LVC technology offers optimized performance for low voltage applications while maintaining compatibility with standard logic interfaces. The family includes various package options to suit different PCB layout requirements and thermal management needs.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The 74LVC138APW serves as a pin-compatible alternative in the TSSOP16 package. Designers should verify electrical characteristics and package dimensions when substituting between different package types within the same logical family.