STMicroelectronics 74VHCT138AMTR 3-to-8 Line Decoder/Demultiplexer

The 74VHCT138AMTR from STMicroelectronics is a high-speed Si-gate CMOS device that is designed to be a 3-to-8 line decoder/demultiplexer. This integrated circuit is tailored for high-performance memory-decoding or data-routing applications, requiring very short propagation delay times. It accepts three binary weighted inputs (A0, A1, and A2) and, when enabled, provides eight mutually exclusive active LOW outputs (Y0 to Y7).

The 74VHCT138AMTR is a member of the VHCT family, which means it combines the advantages of the high noise immunity of CMOS technology with the speed of TTL devices. This makes it an ideal choice for interfacing with TTL levels in mixed-technology environments. The device is also characterized for operation from -40°C to +85°C, ensuring reliable performance across a broad range of industrial and commercial operating conditions.

The decoder/demultiplexer features three enable inputs: two active LOW (E1 and E2) and one active HIGH (E3). These enable inputs must be satisfied to allow the device to translate the input data. When the enables are not active, all outputs assume a high impedance OFF-state, regardless of the other input conditions, providing a power-saving feature and reducing the possibility of erroneous outputs.

Manufactured in a 16-lead small outline package, the product comes in a tape and reel configuration, designated by the 'TR' suffix in its part number, which aids in automated assembly processes, making it an efficient choice for mass production environments. The 74VHCT138AMTR is also characterized for its low power consumption, which is a critical attribute for battery-operated and power-sensitive applications.

STMicroelectronics ensures that the 74VHCT138AMTR meets the stringent requirements of the major international standards, providing designers with a robust, reliable, and high-performance solution for their digital logic needs. Its versatility and efficiency make it a widely accepted component in digital systems, where precise data-routing and decoding are paramount.

Overall, the 74VHCT138AMTR is a testament to STMicroelectronics' commitment to providing advanced integrated circuits that meet the evolving needs of modern electronic systems.