74AHCT138S16-13

Signal Switches, Multiplexers, Decoders Overview

The Diodes Incorporated 74AHCT138S16-13 is a 3-to-8 line decoder and demultiplexer housed in an SO-16 package. It operates within a supply voltage range of 4.5V to 5.5V and accepts three-bit binary weighted addresses on inputs A0, A1, and A2. The device features two active-low enable inputs (E1, E2) and one active-high enable input (E3). When enabled, it produces one active-low output while the remaining seven outputs remain high. It is designed for pin compatibility with 74LS low power Schottky types.

Signal Switches, Multiplexers, Decoders Feature Summary

• Accepts up to 6.0V on inputs despite lower operating voltage
• Schmitt trigger action at all inputs for noise immunity
• Totally lead-free and fully RoHS compliant construction
• ESD protection exceeding specified machine and human body model thresholds

Signal Switches, Multiplexers, Decoders Applications

• Memory chip select decoding
• Demultiplexing data streams
• Single line peripheral control
• Controlling multiple peripheral lines from microcontroller serial bit streams

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix -13 corresponds to the 2500-unit tape and reel packaging configuration. Confirm the S16 package code matches the required SO-16 physical footprint for your PCB layout. Ensure the component meets the Halogen and Antimony Free "Green" device definition if environmental compliance is a strict project requirement.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when pin compatibility with legacy 74LS logic is required alongside CMOS low power consumption. The AHCT series ensures TTL-compatible input levels while maintaining CMOS performance characteristics. Verify that the system's maximum load capacitance does not exceed the switching speed specifications provided in the datasheet for the target operating temperature range.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74AHCT138 family of 3-to-8 line decoders manufactured by Diodes Incorporated. The S16 variant specifically denotes the Small Outline package with 16 pins. The family is characterized by advanced high-speed CMOS technology designed to interface directly with standard TTL logic systems without level shifting requirements.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Check for other manufacturers offering the 74AHCT138 designation. Verify that any substitute maintains the exact same pinout and electrical characteristics, particularly the enable logic states and output drive capabilities, to ensure functional equivalence in existing designs.