The M74HCT138B1R is a high-performance integrated circuit from STMicroelectronics, designed to provide efficient and reliable decoding capabilities. This device is part of the HCT (High-speed CMOS logic with TTL-compatible inputs) family, which ensures compatibility with older TTL logic while providing the speed and low power consumption of CMOS technology.

Key Features

• Logic Type: 3-to-8 Line Decoder/Demultiplexer
• Supply Voltage Range: 4.5V to 5.5V, making it ideal for 5V logic systems
• High-Speed: Typical propagation delay time of 18ns, ensuring fast response for critical applications
• Low Power Consumption: The CMOS technology provides a significant reduction in power usage compared to traditional TTL devices
• TTL-Compatible Inputs: The HCT logic level allows for direct interfacing with TTL logic without the need for level shifters
• Multiple Decoding Options: Capable of decoding an n-bit coded input into a maximum of 2^n unique outputs
• Pin and Function Compatibility: This device is pin-to-pin compatible with other standard logic families, simplifying design and PCB layout
• Package: Offered in a DIP-16 (Dual In-line Package) for easy integration into a wide range of applications

Applications

The M74HCT138B1R is versatile and can be used in various applications including:

• Memory decoding or data routing
• Control systems
• Computer systems
• Instrumentation and measurement systems

Quality and Reliability

STMicroelectronics is known for its commitment to quality and the M74HCT138B1R is no exception. It is designed to meet the rigorous standards of the industrial and automotive industries, ensuring high reliability and performance under a wide range of environmental conditions.

Environmental and Regulatory Compliance

The M74HCT138B1R complies with the RoHS directive, which restricts the use of certain hazardous substances in electrical and electronic equipment. This makes it an environmentally friendly choice for designers and manufacturers looking to create sustainable products.