STMicroelectronics

74ACT138TTR

74ACT138TTR Description

The 74ACT138TTR is a high-performance Decoder/Demultiplexer IC designed by STMicroelectronics, a leading manufacturer in the semiconductor industry. This IC is part of the 74ACT series and is housed in a 16-TSSOP package, making it suitable for surface mount applications. It features a single 3:8 decoder/demultiplexer circuit, providing robust functionality in a compact form factor. The 74ACT138TTR operates on a single supply voltage ranging from 4.5V to 5.5V, ensuring compatibility with a variety of power supply configurations. It is designed to deliver high output current, with both high and low outputs capable of sourcing up to 24mA, making it ideal for driving multiple loads efficiently.

74ACT138TTR Features

• High Output Current Capability: The 74ACT138TTR can source up to 24mA on both high and low outputs, providing significant flexibility in driving various loads.
• Single Supply Operation: With a supply voltage range of 4.5V to 5.5V, this IC is well-suited for applications where a single power supply is preferred, simplifying power management.
• Surface Mount Compatibility: The 16-TSSOP package allows for easy integration into modern PCB designs, enhancing reliability and reducing the overall footprint.
• Moisture Sensitivity Level (MSL) 1: This ensures that the IC is highly resistant to moisture, making it suitable for a wide range of environmental conditions without the need for special handling.
• Compliance and Standards: The 74ACT138TTR is REACH unaffected and ROHS3 compliant, adhering to stringent environmental and safety regulations.
• Independent Circuit Design: The single 3:8 decoder/demultiplexer circuit ensures high reliability and performance, making it an ideal choice for applications requiring precise signal decoding and demultiplexing.

74ACT138TTR Applications

The 74ACT138TTR is well-suited for a variety of applications where efficient signal decoding and demultiplexing are required. Some specific use cases include:

• Digital Systems: Ideal for use in digital systems where multiple signals need to be decoded or demultiplexed, such as in microcontroller interfacing and digital signal processing.
• Memory Address Decoding: Can be used in memory systems to decode address lines, enabling efficient access to memory locations.
• Peripheral Control: Useful in controlling peripheral devices by decoding control signals and directing them to the appropriate components.
• Data Multiplexing: Effective in data multiplexing applications, where multiple data streams need to be routed through a single channel.

Conclusion of 74ACT138TTR

The 74ACT138TTR from STMicroelectronics is a versatile and reliable Decoder/Demultiplexer IC, offering high output current capability, single supply operation, and surface mount compatibility. Its compliance with environmental and safety standards, along with its robust performance, makes it an excellent choice for a wide range of applications in the electronics industry. While it is currently marked as obsolete, the 74ACT138TTR remains a valuable component for existing systems and legacy designs, ensuring continued support and functionality.