Texas Instruments

SN74LS138DRG4

SN74LS138DRG4 Description

The SN74LS138DRG4 is a 1 x 3:8 decoder/demultiplexer integrated circuit (IC) from Texas Instruments, part of the 74LS series. This IC is designed for surface-mount applications and is housed in a 16SOIC package. It operates within a supply voltage range of 4.75V to 5.25V, ensuring compatibility with standard digital logic systems. The SN74LS138DRG4 features a single supply voltage source and offers a current output capability of 400µA high and 8mA low, making it suitable for driving various digital loads.

SN74LS138DRG4 Features

• Operating Temperature Range: The SN74LS138DRG4 is rated for operation between 0°C and 70°C, making it suitable for general industrial and commercial applications.
• Compliance and Standards: This IC is REACH unaffected and ROHS3 compliant, adhering to stringent environmental and safety regulations. It also falls under the EAR99 ECCN classification and is categorized under HTSUS code 8542.39.0001.
• Packaging: The SN74LS138DRG4 is available in tape and reel (TR) packaging, facilitating efficient handling and assembly in automated manufacturing processes.
• Moisture Sensitivity Level (MSL): With an MSL rating of 1 (unlimited), the SN74LS138DRG4 is suitable for use in environments with varying humidity levels without the need for special handling precautions.
• Performance: The IC offers a single independent circuit with a 3:8 decoding function, providing efficient signal routing and control in digital systems.

SN74LS138DRG4 Applications

The SN74LS138DRG4 is ideal for a variety of applications where signal decoding and demultiplexing are required. Its 3:8 decoding function makes it particularly useful in systems that need to manage multiple input signals efficiently. Some specific use cases include:

• Digital Systems: Ideal for use in digital systems where multiple control signals need to be decoded into a larger number of output signals.
• Microcontroller Interfaces: Can be used to expand the number of available output lines from a microcontroller, enabling control of multiple devices or peripherals.
• Memory Address Decoding: Useful in memory systems to decode address lines and select specific memory locations.
• Data Routing: Effective in routing data signals in complex digital circuits, ensuring efficient data management and control.

Conclusion of SN74LS138DRG4

The SN74LS138DRG4 is a versatile and reliable decoder/demultiplexer IC from Texas Instruments, offering a range of features that make it suitable for various digital applications. Its compliance with environmental and safety standards, combined with its robust performance and compatibility with standard digital systems, make it a valuable component in modern electronic designs. Despite being marked as obsolete, the SN74LS138DRG4 remains a reliable choice for applications that require efficient signal decoding and demultiplexing.