ON Semiconductor 74AC138PC Decoder/Demultiplexer

The ON Semiconductor 74AC138PC is a high-performance, fast CMOS 3-to-8 line decoder/demultiplexer with integrated latch capabilities. This integrated circuit (IC) is designed to provide efficient solutions for a variety of digital systems that require the decoding of a three-bit binary input to one of eight mutually exclusive outputs. It is particularly useful in applications that involve the distribution of high-speed signals, such as memory selection, data routing, and control signal generation.

The 74AC138PC is characterized by its high-speed operation, which is a result of the advanced CMOS technology used in its manufacturing. It is capable of operating at speeds comparable to low power Schottky TTL circuits while maintaining CMOS low power consumption. The device can operate with a wide range of supply voltages, from 2V to 6V, making it versatile for various digital environments and compatible with TTL levels.

Featuring an active-low enable input, the device ensures that its outputs remain high-impedance unless specifically activated. This high-impedance state is maintained even when the device is powered off, providing additional protection for the connected circuits. The 74AC138PC comes in a standard 16-pin DIP package, which is widely accepted and easy to integrate into existing and new designs.

Key features of the 74AC138PC include:

• High-speed operation: t<sub>PD = 4.5ns (typ) at V<sub>CC = 5V
• Low power consumption: I<sub>CC = 4μA (max) at T<sub>A = 25°C
• 3-to-8 line decoding with latch function
• Multiple enable inputs for easy expansion
• Wide operating voltage range: V<sub>CC = 2V to 6V
• Outputs can drive up to 10 LSTTL loads
• Standard 16-pin DIP package for ease of use

The 74AC138PC is a reliable choice for designers looking to implement decoding or demultiplexing functions in their digital systems. Its high-speed performance combined with low power consumption and the flexibility of a wide operating voltage range make it an excellent component for a wide variety of applications in computing, telecommunications, and consumer electronics.

With ON Semiconductor's commitment to quality, the 74AC138PC is manufactured to meet the highest industry standards, ensuring both performance and durability for the end-user.