onsemi

DM74LS73AN

DM74LS73AN Description

The DM74LS73AN is a dual JK flip-flop integrated circuit (IC) from the 74LS series, designed and manufactured by onsemi. This IC features two independent JK flip-flops, each capable of storing one bit of data. It operates within a supply voltage range of 4.75V to 5.25V and supports a clock frequency of up to 25 MHz. The DM74LS73AN is designed for through-hole mounting, making it suitable for applications where robust mechanical stability is required. The operating temperature range is from 0°C to 70°C (TA), ensuring reliable performance in a variety of environmental conditions. The IC is equipped with a master reset function, allowing for synchronous reset of both flip-flops. The outputs are complementary, providing both true and inverted signals. The DM74LS73AN is classified under ECCN EAR99 and HTSUS code 8542.39.0001. It is REACH unaffected, ensuring compliance with environmental and safety regulations. The IC has a moisture sensitivity level (MSL) of 1, indicating it is not moisture-sensitive and can be stored without special precautions. Despite its obsolescence, the DM74LS73AN remains a reliable choice for legacy systems and specific applications.

DM74LS73AN Features

• Dual JK Flip-Flops: The DM74LS73AN contains two independent JK flip-flops, each capable of storing one bit of data. This dual functionality allows for efficient use of space and resources in digital circuits.
• Negative Edge Triggering: The flip-flops are triggered on the negative edge of the clock signal, providing precise control over data latching and ensuring reliable operation in synchronous digital systems.
• Complementary Outputs: Each flip-flop provides both true and inverted outputs, offering flexibility in circuit design and enabling the creation of complex logic functions.
• Master Reset Function: The IC includes a master reset feature that allows for synchronous reset of both flip-flops, simplifying the design of reset circuits and ensuring consistent initial states.
• High Output Current Capability: The DM74LS73AN can source up to 400µA and sink up to 8mA, making it suitable for driving various types of loads and interfacing with other digital components.
• Wide Operating Temperature Range: With an operating temperature range of 0°C to 70°C (TA), the DM74LS73AN is suitable for a wide range of industrial and commercial applications.
• Through-Hole Mounting: The through-hole mounting type ensures robust mechanical stability and ease of installation on printed circuit boards (PCBs).

DM74LS73AN Applications

The DM74LS73AN is ideal for a variety of digital circuit applications, including:

• Sequential Logic Circuits: The dual JK flip-flops make it suitable for designing sequential logic circuits, such as counters, shift registers, and state machines.
• Data Storage and Latching: The ability to store one bit of data per flip-flop allows the DM74LS73AN to be used in data storage and latching applications, ensuring reliable data retention.
• Clock Synchronization: The negative edge triggering and master reset function enable precise clock synchronization, making it suitable for applications requiring accurate timing and control.
• Digital Signal Processing: The complementary outputs and high output current capability make the DM74LS73AN suitable for digital signal processing applications, such as digital filters and modulators.
• Legacy Systems: Despite its obsolescence, the DM74LS73AN remains a reliable choice for maintaining and upgrading legacy systems where compatibility with existing components is crucial.

Conclusion of DM74LS73AN

The DM74LS73AN is a versatile and reliable dual JK flip-flop IC that offers a range of features and benefits for digital circuit design. Its dual functionality, negative edge triggering, complementary outputs, and master reset feature make it suitable for a variety of applications, including sequential logic circuits, data storage, clock synchronization, and digital signal processing. The wide operating temperature range, through-hole mounting, and high output current capability further enhance its suitability for industrial and commercial applications. Although the DM74LS73AN is now obsolete, its robust design and compatibility with legacy systems ensure it remains a valuable component for specific use cases.