74AHCT138D,112

Signal Switches, Multiplexers, Decoders Overview

The Nexperia 74AHCT138D,112 is a 3-to-8 line decoder and demultiplexer housed in a 16-pin SOIC package. It operates within a supply voltage range of 4.5V to 5.5V and supports an industrial operating temperature range from -40°C to +125°C. The device provides eight mutually exclusive active LOW outputs with output currents of 8mA for both high and low states. It features three enable inputs that facilitate parallel expansion to larger decoding configurations.

Signal Switches, Multiplexers, Decoders Feature Summary

• Decodes three binary weighted address inputs into eight mutually exclusive active LOW outputs
• Features multiple enable inputs allowing easy parallel expansion to 1-of-32 decoder configurations
• Capable of functioning as an eight-output demultiplexer by utilizing enable inputs as data strobes
• Includes input clamp diodes to interface with voltages exceeding VCC using current limiting resistors

Signal Switches, Multiplexers, Decoders Applications

• Industrial memory chip select decoding
• Parallel expansion of decoding systems
• Demultiplexing applications requiring TTL-compatible logic levels

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for recent Product Change Notifications regarding manufacturing site or material updates. Ensure storage conditions adhere to the specified moisture sensitivity level requirements to maintain device integrity prior to assembly.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when TTL-compatible logic levels are required at 5V operation. The AHCT series ensures compatibility with standard TTL inputs while maintaining CMOS performance characteristics. Consider the SOIC-16 package dimensions for PCB layout constraints and verify thermal dissipation capabilities within the specified industrial temperature range.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74AHCTx138 series of decoders and demultiplexers manufactured by Nexperia. It is designed for high-speed digital applications requiring precise signal routing and decoding. The device integrates advanced CMOS technology to provide low power consumption alongside robust noise immunity suitable for demanding industrial environments.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Direct substitutes include Diodes Incorporated 74AHCT138S16-13 and Texas Instruments SN74AHCT138QDRQ1. Verify pinout compatibility and electrical specifications before implementation.