74LVC138ABQ-Q100X

Signal Switches, Multiplexers, Decoders Overview

The Nexperia 74LVC138ABQ-Q100X is a 3-to-8 line decoder and demultiplexer qualified to AEC-Q100 Grade 1 standards. It decodes three binary weighted address inputs (A0, A1, A2) into eight mutually exclusive outputs (Y0 to Y7). The device features three enable inputs (E1, E2, E3) for parallel expansion or demultiplexing functions. It operates with a supply voltage range of 1.2 V to 3.6 V and includes overvoltage tolerant inputs up to 5.5 V. The component utilizes Schmitt-trigger action at all inputs to tolerate slower rise and fall times.

Signal Switches, Multiplexers, Decoders Feature Summary

• Automotive qualification in accordance with AEC-Q100 Grade 1 standard
• Overvoltage tolerant inputs allowing direct interface with 5 V devices
• Schmitt-trigger action at all inputs for noise immunity
• DHVQFN package with side-wettable flanks enabling automatic optical inspection

Signal Switches, Multiplexers, Decoders Applications

• Memory chip select decoding
• Demultiplexing applications using active LOW enable inputs as data inputs
• Parallel expansion to 1-of-32 decoders using multiple ICs

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific suffix 'X' corresponds to the required reel packaging configuration before ordering. Confirm that the DHVQFN16 package variant meets the thermal and mechanical constraints of the target PCB layout. Ensure design compliance with AEC-Q100 Grade 1 requirements for automotive environments.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when an automotive-grade 3-to-8 decoder is required with high input tolerance. The wide supply voltage range supports various logic families. The DHVQFN package offers space efficiency. Verify that the propagation delay characteristics meet the system timing requirements across the full operating temperature range.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the Nexperia 74LVC138A-Q100 family of 3-to-8 line decoders. It is specifically manufactured in the DHVQFN16 (SOT763-1) package. Other package options within the same functional family include SO16 and TSSOP16 variants, which share identical electrical specifications but differ in physical dimensions and mounting styles.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Direct substitutes within the same family include 74LVC138AD-Q100 (SO16) and 74LVC138APW-Q100 (TSSOP16). These alternatives provide identical logical functionality and electrical parameters but require different footprint considerations due to distinct package geometries.