Texas Instruments

SN74HCT138NSR  

Encoders, Decoders, Multiplexers & Demultiplexers

SN74HCT138NSR Description

The SN74HCT138NSR is a high-performance decoder/demultiplexer integrated circuit (IC) from Texas Instruments, designed for a wide range of digital applications. This IC features a 1 x 3:8 decoding/demultiplexing function, enabling the conversion of 3-bit binary input to 8 output lines. It operates on a single supply voltage ranging from 4.5V to 5.5V, making it suitable for various power supply configurations. The SN74HCT138NSR is housed in a surface-mount package, specifically a 16-lead small outline (SO) package, which is ideal for compact and space-constrained designs. This device is part of the 74HCT series, known for its high-speed and high-current drive capabilities.

SN74HCT138NSR Features

• High-Speed Operation: The SN74HCT138NSR offers high-speed performance, ensuring efficient and reliable signal decoding and demultiplexing.
• High-Current Drive: With an output current capability of 4mA for both high and low states, this IC can drive multiple loads effectively, reducing the need for additional buffer circuits.
• Single Supply Operation: The device operates from a single supply voltage (4.5V to 5.5V), simplifying power supply design and reducing system complexity.
• Surface-Mount Package: The 16-lead small outline (SO) package provides a compact and robust solution, suitable for surface-mount assembly processes.
• RoHS Compliance: The SN74HCT138NSR is RoHS3 compliant, ensuring it meets the latest environmental standards for electronic components.
• REACH Unaffected: The device is unaffected by REACH regulations, further enhancing its suitability for global markets.
• Moisture Sensitivity Level (MSL) 1: The unlimited moisture sensitivity level ensures the IC is safe from moisture damage during storage and handling.

SN74HCT138NSR Applications

The SN74HCT138NSR is ideal for applications requiring efficient decoding and demultiplexing of digital signals. Some specific use cases include:

• Digital Systems: Used in microprocessor and microcontroller systems for address decoding and data routing.
• Memory Management: Ideal for memory address decoding in RAM and ROM systems, enabling efficient memory access.
• Communication Systems: Utilized in multiplexing and demultiplexing data streams in communication interfaces.
• Consumer Electronics: Suitable for signal routing in televisions, set-top boxes, and other consumer electronics requiring digital signal processing.
• Industrial Control: Employed in industrial automation systems for signal decoding and control logic.

Conclusion of SN74HCT138NSR

The SN74HCT138NSR from Texas Instruments is a versatile and high-performance decoder/demultiplexer IC, offering a range of features that make it suitable for various digital applications. Its high-speed operation, high-current drive capability, and single supply operation make it an efficient solution for signal decoding and demultiplexing. The compact surface-mount package and compliance with environmental standards further enhance its appeal for modern electronic designs. Whether used in digital systems, memory management, or consumer electronics, the SN74HCT138NSR provides reliable and efficient performance, making it a preferred choice for engineers and designers.

SN74HCT138NSR Documents

Download datasheets and manufacturer documentation for SN74HCT138NSR

Images :

Mechanical Outline Drawing      

PCN :

Qualification of Carrier Tape for 14/16 pin SOP and 28 pin SSOP device (PDF)      

Product Catalogs :

Logic Guide (Rev. AB)