STMicroelectronics

74AC138TTR  

Encoders, Decoders, Multiplexers & Demultiplexers

74AC138TTR Description

The 74AC138TTR is a high-performance decoder/demultiplexer integrated circuit designed by STMicroelectronics. This device is part of the 74AC series and is housed in a 16-TSSOP package, making it suitable for surface-mount applications. It features a single 3:8 decoding circuit, providing a compact and efficient solution for various digital logic applications. The 74AC138TTR operates on a single supply voltage ranging from 2V to 6V, ensuring compatibility with a wide range of power sources. Despite its obsolescence status, the 74AC138TTR remains a reliable choice for applications requiring a robust and versatile decoder/demultiplexer.

74AC138TTR Features

• High-Speed Performance: The 74AC138TTR offers fast switching times, making it ideal for high-speed digital applications. Its ability to handle high-frequency signals ensures efficient data processing and minimal latency.
• Single Supply Operation: With a voltage supply range of 2V to 6V, the 74AC138TTR is versatile and can be easily integrated into systems with varying power supply requirements.
• High Current Capability: The device provides a maximum output current of 24mA for both high and low states, ensuring robust performance and compatibility with a wide range of load conditions.
• Surface-Mount Compatibility: The 16-TSSOP package is designed for surface-mount technology (SMT), allowing for efficient and reliable assembly processes. This packaging also helps in reducing the overall footprint on the PCB.
• Compliance and Safety: The 74AC138TTR is REACH unaffected and RoHS3 compliant, ensuring it meets the highest environmental and safety standards. Additionally, it has a moisture sensitivity level (MSL) of 1, making it suitable for unlimited storage and handling conditions.
• Independent Circuit Design: The single 3:8 decoding circuit ensures that each output is independent, providing precise control and minimizing cross-talk and interference.

74AC138TTR Applications

The 74AC138TTR is ideal for a variety of applications where efficient signal decoding and demultiplexing are required. Some specific use cases include:

• Digital Systems: In digital circuits, the 74AC138TTR can be used to decode address lines in memory systems, ensuring accurate data routing and retrieval.
• Microcontroller Applications: The device can be employed to expand the I/O capabilities of microcontrollers by decoding multiple input signals into a single output, simplifying the control logic.
• Communication Systems: In communication interfaces, the 74AC138TTR can be used to route signals efficiently, ensuring reliable data transmission and reception.
• Automotive Electronics: The robustness and reliability of the 74AC138TTR make it suitable for automotive applications where environmental conditions can be harsh and reliability is paramount.

Conclusion of 74AC138TTR

The 74AC138TTR by STMicroelectronics is a versatile and high-performance decoder/demultiplexer IC that offers significant advantages over similar models. Its wide voltage range, high current capability, and surface-mount compatibility make it an ideal choice for a variety of digital applications. Despite its obsolescence status, the 74AC138TTR remains a reliable and efficient solution for decoding and demultiplexing tasks. Its compliance with environmental and safety standards ensures it meets the requirements of modern electronics manufacturing. For applications requiring precise signal control and efficient data routing, the 74AC138TTR is a proven and dependable option.

74AC138TTR Documents

Download datasheets and manufacturer documentation for 74AC138TTR