DM74LS174N

Overview

The DM74LS174N is a hex D-type flip-flop utilizing TTL circuitry, manufactured by onsemi. It features six positive-edge-triggered flip-flops with single-rail outputs and a direct clear input. The device operates within a supply voltage range of 4.5V to 5.5V and supports a typical clock frequency of 40 MHz. Propagation delay is typically 25 ns at 5V with 50pF load. It is housed in a 16-pin PDIP package and functions within an operating temperature range of 0°C to 70°C.

Feature Summary

• Hex configuration providing six independent D-type flip-flops with single-rail outputs
• Positive-edge triggering mechanism for data transfer synchronized with clock pulses
• Direct clear input functionality across all flip-flops for immediate state reset

Applications

• Buffer and storage registers
• Shift registers
• Pattern generators

Procurement Notes

Verify component authenticity through authorized channels as the DM74LS174N may be discontinued or obsolete depending on current inventory status. Confirm package integrity and pin compatibility before integration. Cross-reference datasheets from onsemi or Fairchild Semiconductor to ensure technical specifications match design requirements. Check RoHS compliance status if applicable to modern manufacturing standards.

Selection Notes

Select this component for applications requiring multiple D-type flip-flops in a single package. Ensure the system operates within the specified 4.5V to 5.5V voltage range. Consider the 40 MHz clock frequency limit when designing high-speed timing circuits. Verify that the PDIP-16 package fits the PCB layout constraints and thermal management needs of the assembly.

Part Context

This part belongs to the 74LS series of logic integrated circuits, widely used in digital electronics. It implements standard D-type flip-flop logic using TTL technology. The 'N' suffix indicates a plastic dual-in-line package. Similar parts include the DM74LS175, which offers complementary outputs, and other hex flip-flops in the 74xx family.

Replacement Considerations

SN74LS174N from Texas Instruments serves as a direct functional substitute. Both devices share identical logical operations, pin configurations, and electrical characteristics. Verify that the replacement maintains the same package type and voltage specifications for seamless integration.