STMicroelectronics M74HC238M1R 3-to-8 Line Decoder/Demultiplexer

The M74HC238M1R is a high-speed CMOS 3-to-8 line decoder/demultiplexer fabricated by STMicroelectronics. This integrated circuit is designed to be used in applications that require the conversion of a binary-coded input into one of eight mutually exclusive outputs. It is particularly well-suited for implementing decoding functions in memory address decoding, data routing, and for transforming serial data to parallel format in a variety of digital systems.

This device features three binary input signals, labeled A, B, and C, and eight mutually exclusive outputs, Y0 to Y7. The inputs determine which one of the eight outputs will be selected. For example, if A, B, and C are low (0), output Y0 will be active. If A is low, B is high (1), and C is low, output Y2 will be active, and so on. The M74HC238M1R also includes an active-low enable input, G1, and two active-high enable inputs, G2A and G2B. All outputs will be high unless the enable conditions are satisfied.

Constructed with silicon gate CMOS technology, the M74HC238M1R offers the high-speed operation similar to LSTTL combined with the true CMOS low power consumption. It is capable of driving 10 LSTTL loads and has a low power dissipation with a typical quiescent current of 20μA. This makes it an excellent choice for battery-operated and power-sensitive applications.

The device is provided in a compact SO-16N package, making it easy to integrate into a wide range of electronic systems. Additionally, it is characterized for operation from -55°C to +125°C, ensuring reliability across a broad spectrum of operating conditions. This product from STMicroelectronics is guaranteed to meet the requirements of JEDEC standard no. 7A at 25°C.

Overall, the M74HC238M1R is a versatile and efficient solution for decoding and demultiplexing needs in digital electronics, offering the performance and reliability expected from a leading semiconductor manufacturer like STMicroelectronics.