Texas Instruments

SN74HC74DB

SN74HC74DB Description

The SN74HC74DB is a dual D-type flip-flop integrated circuit designed by Texas Instruments, belonging to the 74HC series. This IC features two independent D-type flip-flops, each capable of storing one bit of data. It operates within a supply voltage range of 2V to 6V, making it suitable for a variety of power supply configurations. The clock frequency of the SN74HC74DB is rated at 60 MHz, ensuring high-speed operation for demanding applications. The maximum propagation delay is 30 nanoseconds at 6V with a maximum load capacitance of 50 picofarads, providing reliable and fast signal processing.

SN74HC74DB Features

The SN74HC74DB offers several key features that make it a versatile component in digital circuit design:

• High-Speed Operation: With a clock frequency of 60 MHz, the SN74HC74DB can handle high-speed digital signals, making it suitable for applications requiring rapid data processing.
• Low Power Consumption: The quiescent current (Iq) is only 4 µA, which is ideal for low-power applications and battery-operated devices.
• Dual Flip-Flops: Each flip-flop can store one bit of data, providing two independent storage elements in a single package.
• Positive Edge Triggering: The flip-flops are triggered on the positive edge of the clock signal, ensuring precise timing control.
• Complementary Outputs: The output type is complementary, providing both true and complement outputs, which can be useful for various digital logic applications.
• Wide Supply Voltage Range: The SN74HC74DB operates within a supply voltage range of 2V to 6V, offering flexibility in power supply design.
• Low Input Capacitance: The input capacitance is only 3 pF, which minimizes loading effects on the driving circuitry.
• High Output Current: The output current is rated at 5.2 mA for both high and low states, ensuring robust signal drive capabilities.
• Surface Mount Packaging: The 14SSOP package type is suitable for surface mount technology, facilitating compact and reliable PCB designs.
• ROHS3 Compliant: The SN74HC74DB meets the stringent environmental standards of ROHS3, ensuring compliance with global regulations.

SN###74HC74DB Applications

The SN74HC74DB is well-suited for a variety of applications due to its high-speed operation, low power consumption, and versatile features. Some specific use cases include:

• Digital Storage: Ideal for storing digital data in memory elements, counters, and registers.
• Synchronization: Used in synchronizing digital signals in communication systems and data transmission applications.
• Clock Management: Useful in clock distribution and synchronization circuits where precise timing control is required.
• Sequential Logic: Employed in sequential logic circuits, such as state machines and control units, where data storage and processing are critical.
• ** ElectronicsConsumer**: Suitable for applications in consumer electronics, such as digital clocks, calculators, and remote controls, where low power consumption and compact design are essential.

Conclusion of SN74HC74DB

The SN74HC74DB is a high-performance dual D-type flip-flop IC that offers a combination of speed, low power consumption, and versatility. Its features, such as high-speed operation, low quiescent current, and complementary outputs, make it an excellent choice for a wide range of digital applications. While the product is now obsolete, its legacy continues to influence modern digital circuit design. For engineers and designers seeking reliable and efficient digital storage solutions, the SN74HC74DB remains a notable reference point in the field of electronics.