DM74S74N

Overview

The DM74S74N is a dual D-type flip-flop manufactured by onsemi, belonging to the 74S logic series. It features positive-edge triggering and includes independent preset and clear functions that operate independently of the clock signal. The device utilizes Schottky TTL technology to achieve high-speed operation with a maximum clock frequency of 65 MHz. It provides complementary outputs for each flip-flop element. The component is designed for through-hole mounting in a 14-MDIP package, operating within a supply voltage range of 4.75V to 5.25V and an ambient temperature range of 0°C to 70°C.

Feature Summary

• Dual D-type flip-flop configuration with positive-edge triggering mechanism
• Independent asynchronous preset and clear control inputs
• Complementary output structure providing both Q and Q-bar signals
• Schottky TTL construction enabling high-speed switching performance

Applications

• High-speed digital data storage circuits
• Parallel-to-serial data conversion modules
• Shift register implementations requiring fast propagation
• Timing and synchronization logic in industrial systems

Procurement Notes

Verify component authenticity as this part is discontinued. Confirm package integrity and pin alignment against the 14-MDIP specification. Check datasheet revisions for any functional updates or obsolescence notices from onsemi. Ensure replacement sources provide valid traceability documentation. Validate electrical parameters against original design requirements before integration.

Selection Notes

Select this component only if Schottky TTL speed characteristics are required. Verify compatibility with existing 5V logic levels. Consider power consumption differences compared to standard 74LS equivalents. Evaluate physical space constraints for the 14-DIP footprint. Assess availability of direct substitutes if production continuity is critical.

Part Context

This device belongs to the 74S family, known for superior speed over standard 74LS logic. It serves as a fundamental building block for sequential logic designs. The dual configuration allows two independent bits of storage within a single package. Its discontinuation reflects industry shifts toward lower power CMOS technologies while maintaining legacy interface compatibility.

Replacement Considerations

SN74S74N by Texas Instruments is a confirmed direct substitute.