DM74ALS174N

Overview

The DM74ALS174N is a hex D-type flip-flop manufactured by Fairchild Semiconductor, belonging to the Advanced Low-Power Schottky (ALS) logic family. It features six independent positive-edge-triggered D flip-flops with single-rail outputs and a direct clear input. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports a typical clock frequency of 40 MHz. Packaged in a 16-pin dual in-line package (DIP), it offers improved AC performance over standard LS series counterparts while maintaining TTL-compatible inputs.

Feature Summary

• Hex configuration providing six independent D-type flip-flops with single-rail outputs
• Positive-edge triggering mechanism for data transfer on clock pulse transitions
• Direct clear input functionality for immediate output reset
• Advanced Low-Power Schottky technology ensuring low power dissipation

Applications

• Buffer and storage registers
• Shift registers
• Pattern generators

Procurement Notes

Verify the specific manufacturer origin, as this part number is produced by multiple vendors including Fairchild, National Semiconductor, and Texas Instruments. Confirm that the component meets the required ALS logic specifications and DIP-16 package dimensions. Ensure compatibility with 4.5V to 5.5V operating voltages and check for any lead-free or environmental compliance requirements relevant to your assembly process.

Selection Notes

Select this component when designing circuits requiring high-speed hex D-type flip-flops with low power consumption. It serves as a suitable replacement for older LS174 devices where faster switching speeds are necessary. Consider the 16-pin DIP package for through-hole applications and ensure the design accommodates the positive-edge triggering characteristic and direct clear input functionality.

Part Context

This component belongs to the 74ALS series of digital logic integrated circuits, which bridges the performance gap between standard 74LS and high-speed 74S families. The DM74ALS174N specifically implements hex D-type flip-flop logic using advanced oxide-isolation techniques. It is widely used in microprocessor systems and memory applications requiring reliable data storage and transfer capabilities.

Replacement Considerations

The DM74ALS174N can be replaced by equivalent parts from other manufacturers such as SN74ALS174N or MC74ALS174N, provided they match the ALS logic family specifications and DIP-16 package format. Verify pinout compatibility and electrical characteristics before substitution.