ON Semiconductor MC74AC138MEL Decoder/Demultiplexer

The ON Semiconductor MC74AC138MEL is a high-performance, advanced CMOS (Complementary Metal-Oxide Semiconductor) 3-to-8 line decoder/demultiplexer integrated circuit, designed to facilitate the hardware design of digital systems. This component is particularly useful for converting encoded data into a set of outputs, allowing for the selection of one out of eight output lines through a binary address present at its inputs.

The MC74AC138MEL operates with a supply voltage ranging from 2V to 6V, making it compatible with a variety of logic families and enabling its use in low-power applications. This versatility is further enhanced by its capability to directly drive up to ten low-power Schottky TTL (Transistor-Transistor Logic) equivalent loads, ensuring that it can be integrated into a wide range of digital circuits without additional interfacing components.

Key Features:

• Logic Type: 3-to-8 Line Decoder/Demultiplexer
• Supply Voltage: 2V to 6V, accommodating multiple logic levels
• High Current Output: Capable of driving 10 LSTTL loads
• Power Dissipation: 200µW at 25°C, ensuring low power consumption
• Pin Configuration: 16-pin SOIC package for easy PCB integration
• Demultiplexing Capability: Simplifies the design of address decoding and data routing applications

The MC74AC138MEL offers multiple enable inputs to facilitate the cascading of multiple chips for decoding larger data sets, without needing additional gating. This feature is particularly beneficial in complex digital systems where multiple devices need to be selected or enabled based on specific conditions.

In addition, the ON Semiconductor MC74AC138MEL boasts a high noise immunity characteristic of CMOS devices and a significant reduction in power consumption compared to its TTL counterparts. This makes it an ideal choice for battery-operated devices, portable electronics, and energy-sensitive applications where power efficiency is paramount.

Overall, the MC74AC138MEL from ON Semiconductor is a reliable and efficient solution for designers looking to implement decoding or demultiplexing functionality within their digital systems. Its ease of use, combined with its robust performance characteristics, ensures that it remains a popular choice among engineers and electronics enthusiasts alike.