DM74S174N

Overview

The DM74S174N is a high-speed Schottky (74S) hex D-type flip-flop manufactured by onsemi. It integrates six independent positive-edge-triggered flip-flops within a single 16-pin PDIP package. The device features buffered clock and direct clear inputs, with individual data inputs for each flip-flop. It operates on a standard 5V supply voltage ranging from 4.75V to 5.25V. Key electrical specifications include a maximum propagation delay of 18ns at 5V with 15pF load, a clock frequency of 65MHz, and output currents of 1mA (high) and 20mA (low).

Feature Summary

• Hex configuration providing six independent D-type flip-flops in one package.
• High-speed Schottky technology enabling fast switching and low propagation delay.
• Positive-edge triggering mechanism synchronized with the clock pulse.
• Direct clear input functionality for immediate reset of all flip-flops.

Applications

• Buffer and storage registers
• Shift registers
• Pattern generators

Procurement Notes

Verify component authenticity through authorized channels as this part is obsolete. Confirm package integrity and pin alignment against the 16-PDIP specification. Check datasheet revisions for any historical parameter updates. Ensure environmental compliance documentation aligns with project requirements despite end-of-life status.

Selection Notes

Select this component when high-speed logic performance is required over standard TTL or LS families. The 74S series offers superior speed characteristics suitable for demanding timing applications. Consider availability constraints due to obsolescence and evaluate long-term supply chain stability before finalizing design integration.

Part Context

This component belongs to the 74S logic family, known for its high-speed performance using Schottky diodes to prevent saturation. It serves as a digital storage element within complex logic circuits. The hex configuration allows for compact implementation of multi-bit data handling tasks in legacy or specialized industrial systems.

Replacement Considerations

• DM74LS174N
• SN74S174N

FAQ

What is the trigger type for the DM74S174N?

The DM74S174N utilizes positive-edge triggering, transferring data from the D input to the Q output on the rising edge of the clock pulse.

Does the DM74S174N have complementary outputs?

No, the DM74S174N provides single-rail (non-inverting) outputs. Complementary outputs are found in the quad version, DM74S175.