ON Semiconductor 74HCT138ADR2G Decoder/Demultiplexer

The 74HCT138ADR2G is a high-performance, high-speed CMOS 3-to-8 line decoder/demultiplexer manufactured by ON Semiconductor. This integrated circuit is designed to be used in applications where high-speed and low power consumption are essential. It is part of the 74HCT series, which is compatible with TTL logic levels and can be driven by TTL output sources without the need for external pull-up resistors, due to its CMOS technology.

The 74HCT138ADR2G device has three binary select inputs (A, B, and C), an active LOW enable input (E1), and two active HIGH enable inputs (E2 and E3). When the enable inputs are correctly configured, the binary select inputs determine which one of the eight mutually exclusive outputs (Y0 - Y7) will go LOW. This makes the device ideal for implementing decoder functions, enabling multiple configurations and allowing for a wide range of applications, such as data multiplexing, address decoding, and memory chip selection.

This chip is offered in a small 16-pin SOIC package, making it suitable for space-constrained applications while providing robust performance. The 74HCT138ADR2G operates over a wide voltage range from 4.5V to 5.5V, which is standard for 5V CMOS logic, providing a flexible supply voltage for various system designs. Additionally, the device features a typical low power dissipation, which is a critical parameter for energy-sensitive applications.

ON Semiconductor ensures that the 74HCT138ADR2G maintains a high noise immunity and low power consumption, which are characteristic of CMOS devices, while also providing TTL compatibility. This combination of features makes the 74HCT138ADR2G a versatile component suitable for interfacing with microprocessors and other logic families within a system.

With its industry-standard footprint, the 74HCT138ADR2G is a reliable choice for designers looking for a decoder/demultiplexer that is easy to integrate into their systems, ensuring compatibility and performance. Whether used in consumer electronics, computer peripherals, or industrial control systems, the 74HCT138ADR2G from ON Semiconductor is engineered to meet the demands of modern digital applications.