ON Semiconductor DM74LS109AN Product Overview

The DM74LS109AN from ON Semiconductor is a high-performance, dual positive-edge-triggered J-K flip-flop integrated circuit. This device is part of the LS series and is designed to operate in a wide range of electronic applications requiring flip-flop functions. The DM74LS109AN is characterized by its fast switching speeds and low power consumption, making it an ideal choice for high-speed and energy-efficient designs.

The flip-flop features dual J-K inputs along with set (S) and reset (R) inputs for each flip-flop. These inputs can be used to control the state of the output bits. The J and K inputs must be stable prior to the rising edge of the clock pulse to guarantee predictable output behavior. The set and reset inputs are asynchronous, providing immediate changes in output independent of the clock.

The DM74LS109AN operates with a supply voltage ranging from 4.75V to 5.25V, which is typical for LS-TTL logic levels, and it is designed to interface directly with other standard LS logic components. The device is encapsulated in a standard 16-pin DIP (Dual In-line Package), making it suitable for breadboard prototyping as well as for permanent PCB installations.

With its low power Schottky technology, the DM74LS109AN provides a typical power dissipation of only 60 mW per flip-flop, which is significantly lower than conventional TTL devices. The maximum clock frequency at which the device can operate is also impressive, allowing it to be used in applications that require high-speed data processing or timing control.

Its clear function ensures that the output will be in a low state when the clear input is held high. Conversely, the preset function ensures that the output will be high when the preset input is held high. This level of control makes the DM74LS109AN a versatile component for implementing logic functions, memory storage elements, and toggle elements in a wide array of digital systems.

In summary, the DM74LS109AN from ON Semiconductor is a reliable and efficient choice for designers who require a dual J-K flip-flop with set-reset capabilities. Its compatibility with other LS logic families, along with its high-speed performance and low power consumption, make it a valuable component in digital logic design and various applications.