Texas Instruments

SN74AS138NS  

Encoders, Decoders, Multiplexers & Demultiplexers

SN74AS138NS Description

The SN74AS138NS is a high-performance 3-to-8 line decoder/demultiplexer designed by Texas Instruments. This device is part of the 74AS series and is specifically tailored for applications requiring efficient signal decoding and demultiplexing. The SN74AS138NS operates within a temperature range of 0°C to 70°C, making it suitable for a variety of industrial and commercial environments. It features a single supply voltage range of 4.5V to 5.5V, ensuring compatibility with standard power supplies and reducing the complexity of power management circuits.

The SN74AS138NS is designed with a surface mount package, offering ease of integration into modern printed circuit board (PCB) designs. It is housed in a tube package, which facilitates convenient storage and handling during manufacturing processes. The device is ROHS3 compliant, adhering to stringent environmental regulations and ensuring its suitability for use in environmentally conscious applications.

SN74AS138NS Features

• Operating Temperature Range: 0°C to 70°C, providing reliable performance across a broad range of ambient conditions.
• Independent Circuits: The SN74AS138NS features one independent 3-to-8 line decoding circuit, ensuring precise control and signal distribution.
• Voltage Supply Source: Single supply operation simplifies power management and reduces the need for additional voltage regulation components.
• Voltage - Supply: Operates within a 4.5V to 5.5V range, aligning with standard power supply voltages and ensuring compatibility with existing systems.
• Current - Output High, Low: 2mA and 20mA respectively, providing robust output capabilities suitable for driving various types of loads.
• Moisture Sensitivity Level (MSL): Level 1 (Unlimited), indicating high resistance to moisture and ensuring long-term reliability in humid environments.
• Package: Surface mount, tube package, facilitating efficient manufacturing and integration into compact PCB designs.

SN74AS138NS Applications

The SN74AS138NS is ideal for applications requiring efficient signal decoding and demultiplexing. Its robust performance and compatibility with standard power supplies make it suitable for a wide range of electronic systems, including:

• Digital Signal Processing: Efficiently decodes and routes digital signals in complex digital systems, enhancing signal integrity and system performance.
• Microcontroller Interfaces: Facilitates the connection of microcontrollers to multiple peripherals by decoding address lines and enabling efficient data routing.
• Memory Management: Used in memory address decoding, allowing for the efficient management of memory banks and ensuring reliable data access.
• Communication Systems: Enables the demultiplexing of data streams in communication systems, improving data throughput and system efficiency.

Conclusion of SN74AS138NS

The SN74AS138NS from Texas Instruments is a versatile and reliable 3-to-8 line decoder/demultiplexer, offering a range of features that make it suitable for various applications in the electronics industry. Its broad operating temperature range, single supply operation, and surface mount package make it an excellent choice for modern electronic designs. The device's compliance with ROHS3 regulations ensures its suitability for environmentally conscious applications. With its robust performance and compatibility with standard power supplies, the SN74AS138NS is an ideal solution for digital signal processing, microcontroller interfaces, memory management, and communication systems.

SN74AS138NS Documents

Download datasheets and manufacturer documentation for SN74AS138NS