74AHC138PW,118

Signal Switches, Multiplexers, Decoders Overview

The Nexperia 74AHC138PW,118 is a high-speed Si-gate CMOS 3-to-8 line decoder/demultiplexer in a TSSOP16 package. It accepts three binary weighted address inputs and provides eight mutually exclusive outputs that are LOW when selected. The device features two active LOW enable inputs (E1, E2) and one active HIGH enable input (E3). It operates with a supply voltage range of 2.0 V to 5.5 V and supports an ambient temperature range from -40 °C to +125 °C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Balanced propagation delays across all channels
• All inputs feature Schmitt-trigger action for noise immunity
• Demultiplexing capability using enable inputs as data/strobes
• Multiple input enables facilitate easy parallel expansion

Signal Switches, Multiplexers, Decoders Applications

• Memory chip select decoding
• Parallel expansion to 1-of-32 decoders
• Eight-output demultiplexing configurations

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix matches the required package type and temperature grade. Confirm the logic family variant aligns with system voltage levels. Ensure design compliance with absolute maximum ratings to prevent permanent damage. Check for any recent product change notices affecting specifications or assembly locations before finalizing procurement orders.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component for applications requiring balanced propagation delays and Schmitt-trigger inputs. It is suitable for designs needing multiple enable inputs for complex decoding or demultiplexing tasks. Verify compatibility with existing logic families, noting its pin compatibility with LSTTL devices. Consider the TSSOP16 package constraints regarding board space and thermal dissipation requirements.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74AHC series of high-speed CMOS logic devices. It is specified in compliance with JEDEC standard No. 7A and offers pin compatibility with Low Power Schottky TTL. The device is designed for robust operation with ESD protection exceeding 2000 V HBM and 1000 V CDM standards.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Direct substitutes include other 74AHC138 variants in compatible packages. Verify pinout and electrical characteristics match exactly. Cross-reference with 74AHCT138 if TTL input levels are required instead of CMOS levels.