Texas Instruments

SN74AS874DWRG4

SN74AS874DWRG4 Description

The SN74AS874DWRG4 is a dual 4-bit D-type flip-flop, designed by Texas Instruments, featuring a positive edge-triggered mechanism. This logic IC chip operates within a supply voltage range of 4.5V to 5.5V and is capable of handling a clock frequency up to 125 MHz. It is housed in a 20-pin SOIC package, making it suitable for surface mount applications. The device is obsolete, but it remains a reliable choice for specific applications due to its robust performance and compliance with industry standards such as REACH and ROHS3. The SN74AS874DWRG4 is designed to function within an operating temperature range of 0°C to 70°C (TA), ensuring stability and reliability in various environmental conditions.

SN74AS874DWRG4 Features

• High-Speed Operation: The SN74AS874DWRG4 supports a clock frequency of up to 125 MHz, making it suitable for high-speed digital applications.
• Positive Edge Triggering: This feature ensures that the flip-flops are triggered on the positive edge of the clock signal, providing precise timing control.
• Master Reset Functionality: The device includes a master reset function, allowing for synchronous clearing of the flip-flops, which is essential for initializing and synchronizing digital circuits.
• Low Propagation Delay: With a maximum propagation delay of 10.5ns at 5V and 50pF, the SN74AS874DWRG4 ensures fast signal processing and minimal latency.
• High Current Capability: The flip-flops can handle output currents of 15mA (high) and 48mA (low), making them suitable for driving various types of loads.
• Compliance and Safety: The SN74AS874DWRG4 is REACH unaffected and ROHS3 compliant, ensuring it meets environmental and safety standards.
• Moisture Sensitivity Level: With an MSL of 1 (unlimited), the device is suitable for storage and handling in various environments without the risk of moisture damage.

SN74AS874DWRG4 Applications

The SN74AS874DWRG4 is ideal for a variety of applications requiring high-speed, reliable digital signal processing. Some specific use cases include:

• Digital Clock Circuits: The high clock frequency and positive edge triggering make it suitable for clock distribution and synchronization in digital systems.
• Data Storage and Transfer: The dual 4-bit flip-flops can be used for temporary data storage and transfer in digital circuits, ensuring data integrity and synchronization.
• Microcontroller Interfaces: The device can interface with microcontrollers to provide additional storage and control functions, enhancing the capabilities of embedded systems.
• Communication Systems: In communication systems, the SN74AS874DWRG4 can be used for signal processing and synchronization, ensuring reliable data transmission and reception.

Conclusion of SN74AS874DWRG4

The SN74AS874DWRG4, despite being an obsolete model, remains a valuable component for specific applications requiring high-speed, reliable digital signal processing. Its features, such as high-speed operation, positive edge triggering, and master reset functionality, make it a versatile choice for digital circuits. The device's compliance with environmental and safety standards ensures it meets industry requirements. While newer alternatives may offer additional features, the SN74AS874DWRG4 continues to be a reliable option for engineers and designers working with legacy systems or specific high-speed digital applications.