74LVC138APW,112

Signal Switches, Multiplexers, Decoders Overview

The Nexperia 74LVC138APW,112 is a 3-to-8 line decoder and demultiplexer housed in a TSSOP16 package (SOT403-1). 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 overvoltage tolerant inputs up to 5.5 V. Propagation delay from address inputs to outputs ranges from 2.7 ns to 12.7 ns depending on voltage. It supports Schmitt-trigger inputs for noise tolerance and allows parallel expansion to 1-of-32 decoders.

Signal Switches, Multiplexers, Decoders Feature Summary

• Supports demultiplexing functionality by utilizing enable inputs as data strobes
• Enables easy parallel expansion to 1-of-32 decoders using multiple units
• Provides direct interface compatibility with TTL logic levels
• Features Schmitt-trigger action at all inputs for improved noise immunity

Signal Switches, Multiplexers, Decoders Applications

• Memory chip select decoding
• Mixed 3.3 V and 5 V environment translation
• Demultiplexing applications requiring active low enable strobes

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a 3-to-8 decoding function is required within a 1.2 V to 3.6 V supply range. Ensure the application utilizes the TSSOP16 footprint compatible with SOT403-1. Consider the overvoltage tolerant inputs if interfacing with 5 V signals directly without level shifting.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74LVC138A family of high-speed CMOS logic devices. It is manufactured by Nexperia USA Inc. and follows standard JEDEC specifications for low-voltage CMOS technology. The device is designed for general-purpose digital logic applications requiring reliable decoding or demultiplexing capabilities.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Check for equivalent parts such as the 74LV138 series or other manufacturer's 3-to-8 decoders. Verify pinout compatibility and electrical characteristics like propagation delay and output drive strength before substitution.

Signal Switches, Multiplexers, Decoders FAQ

Can the 74LVC138APW be used as a demultiplexer?

Yes, it can function as an eight-output demultiplexer by using one of the active LOW enable inputs as the data input while the remaining enables act as strobes.

What is the maximum input voltage allowed?

The inputs are overvoltage tolerant up to 5.5 V, allowing direct interface with 5 V devices even when the supply voltage is lower.