STMicroelectronics 74LVX138TTR Low Voltage 3-to-8 Line Decoder/Demultiplexer

The 74LVX138TTR from STMicroelectronics is a high-performance, low-power 3-to-8 line decoder/demultiplexer integrated circuit designed for use in systems that require efficient and reliable distribution of digital signals. This device is a part of the 74LVX family, which operates at a lower voltage range, making it suitable for battery-operated devices and other low-power applications.

With its advanced silicon-gate CMOS technology, the 74LVX138TTR offers a robust solution with a 3.3V operating voltage, while still maintaining 5V tolerant inputs, which allows for mixed-voltage system integration. The device features three binary input signals, which it decodes to select one of eight output lines, effectively routing a single input line to any one of eight outputs.

Key features of the 74LVX138TTR include:

• Low voltage operation: 2.7V to 3.6V
• High-speed performance: propagation delay time of approximately 7.5ns at 3.3V
• Power-down protection on inputs and outputs
• Low quiescent current: 20µA maximum
• 5V tolerant inputs for interfacing with 5V logic levels
• Multiple package options: available in TSSOP and SO packages
• Lead-free, halogen-free, and RoHS compliant

The device's power-down protection feature ensures that the 74LVX138TTR remains protected when it is not powered, as both inputs and outputs will be at a high-impedance state. This reduces the risk of damage due to unexpected conditions such as power failures.

Due to its high-speed performance and low-power consumption, the 74LVX138TTR is an excellent choice for a wide range of applications, from telecommunications and computing to portable devices and industrial control systems. Its ability to interface with 5V signals also makes it versatile for legacy system upgrades and mixed-voltage environment integrations.

STMicroelectronics provides this device in tape and reel packaging (TTR suffix), facilitating efficient assembly for manufacturers, especially during high-volume production runs. The 74LVX138TTR is also characterized for operation from -40°C to +85°C, ensuring reliability over a wide temperature range, making it suitable for various operating environments.

For detailed specifications and application assistance, designers should refer to the official datasheets and support documentation available from STMicroelectronics.