Product Overview: CD74HC138M High-Speed CMOS Logic 3-to-8 Line Decoder/Demultiplexer

The CD74HC138M is a high-speed CMOS Logic 3-to-8 Line Decoder/Demultiplexer integrated circuit, designed and manufactured by Texas Instruments. This device is part of the 74HC series, known for its high-speed operation comparable to the original 74LS series but with the lower power consumption characteristic of CMOS technology. The CD74HC138M is designed for use in high-performance memory-decoding or data-routing applications, requiring very short propagation delay times. It is suitable for a wide range of applications in various types of electronic equipment, including computers, communication devices, and control systems.

The CD74HC138M has three binary select inputs (A, B, and C) and an enable input that can be used to activate or deactivate the device. When enabled, the chip converts the binary input to one of eight active-low outputs. This feature allows for the efficient management of data flow within a digital system by selecting individual data lines without interference.

Key features of the CD74HC138M include:

• High-speed operation: typical propagation delay times of 13 ns.
• Low power consumption: 80 µA maximum ICC.
• Wide operating voltage range: 2V to 6V.
• Low input current: 1 µA maximum.
• High noise immunity characteristic of CMOS technology.
• Output drive capability: 10 LSTTL loads.
• Significant power reduction compared to LSTTL logic ICs.
• Multiple package options: available in SOIC, TSSOP, and other industry-standard packages.

The CD74HC138M is provided in a 16-pin SOIC package, ensuring a compact footprint for space-constrained applications. This device is also characterized for operation from -55°C to 125°C, making it reliable in a wide range of environmental conditions.

Overall, the CD74HC138M from Texas Instruments is a versatile, high-performance solution for your decoding and demultiplexing needs. Its robust design and CMOS technology make it a reliable choice for designers looking to optimize their digital systems with efficient data management and signal routing.