DM74LS574N

Overview

The DM74LS574N is an octal D-type flip-flop manufactured by onsemi, belonging to the 74LS logic series. It features eight independent D-type flip-flops with positive-edge triggering and complementary outputs in a single package. The device operates within a supply voltage range of 4.75V to 5.25V and supports a maximum clock frequency of 30 MHz. It utilizes a 20-pin plastic dual in-line package (PDIP) for through-hole mounting. The component is designed for standard industrial temperature ranges and provides reliable data storage capabilities for digital logic applications.

Feature Summary

• Contains eight independent D-type flip-flops with positive-edge clock triggering
• Provides complementary outputs for each flip-flop stage
• Operates within standard 5V logic supply voltage specifications
• Utilizes a 20-pin dual in-line package for through-hole integration

Applications

• Octal data storage registers in digital systems
• Shift register configurations for serial-to-parallel conversion
• State machine implementation in control logic circuits
• Buffering and synchronization of digital signals

Procurement Notes

This component is officially obsolete and no longer manufactured by onsemi. Procurement must focus on verifying availability from authorized distributors or secondary market suppliers. Buyers should confirm the authenticity of stock units and check for potential cross-references from other manufacturers. Due to the discontinued status, lead times may vary significantly, and direct replacement verification is essential before integration into new designs.

Selection Notes

Engineers selecting this part should note its obsolete status and consider functional equivalents from other manufacturers. The SN74ALS574BN is listed as a direct substitute option. When replacing, verify pin compatibility and electrical characteristics against the original design requirements. Ensure that any alternative component meets the necessary voltage, speed, and packaging constraints for the specific application environment.

Part Context

The DM74LS574N belongs to the widely used 74LS (Low-power Schottky) logic family, known for balanced speed and power consumption. This specific model provides octal buffering functionality, making it suitable for applications requiring multiple synchronized data storage elements. As a legacy component, it represents a standard solution for older digital designs utilizing through-hole technology and parallel data handling.

Replacement Considerations

The SN74ALS574BN from Texas Instruments is identified as a direct substitute. Verify pinout compatibility and electrical parameters when transitioning to this alternative. Other compatible parts within the 74LS or 74ALS families may also serve as replacements depending on specific performance needs.