SN74AS174NS

Flip Flops Overview

The SN74AS174NS is a hex D-type flip-flop from the Texas Instruments AS logic series, housed in a 16-pin PDIP package. It features positive-edge triggering and includes a master reset input. The device operates on a single 5V supply (4.5V to 5.5V) with TTL-compatible inputs and outputs. Key electrical parameters include a propagation delay of 10 ns, a low-level output current of 20 mA, and a high-level output current of -2 mA. It supports through-hole mounting and functions within a commercial temperature range of 0°C to +70°C.

Flip Flops Feature Summary

• Hex configuration providing six independent D-type flip-flops in a single package
• Positive-edge clock triggering for precise data synchronization
• Master reset functionality to initialize all flip-flop states simultaneously
• TTL-compatible input and output interfaces for direct system integration

Flip Flops Applications

• Parallel-to-serial data conversion circuits
• Shift register implementations
• General-purpose digital storage applications
• Timing and control logic systems

Flip Flops Procurement Notes

Verify the specific suffix 'N' confirms the PDIP-16 through-hole package variant rather than surface-mount options like SOIC or TSSOP. Confirm RoHS compliance status as indicated in official documentation, noting that older manufacturing runs may differ. Ensure the supplier provides the original manufacturer datasheet to validate the AS series speed characteristics and electrical limits against your design requirements.

Flip Flops Selection Notes

Select this component when high-speed switching is required compared to standard 74-series logic, while maintaining TTL compatibility. The AS series offers faster propagation delays than LS variants but consumes more power. Choose the PDIP package only if through-hole assembly is mandated by the PCB design or mechanical constraints. Verify that the 20 mA sink capability meets the load requirements of the connected circuitry.

Flip Flops Part Context

This part belongs to the SN74AS174 family, representing the Advanced Schottky (AS) logic generation known for superior speed-performance power product ratios. It serves as a high-speed alternative to the SN74LS174 and SN74HC174, offering faster switching times at the cost of higher static power consumption. The NS designation specifically identifies the plastic dual-in-line package version within this logical family.

Flip Flops Replacement Considerations

• SN74AS174DR
• SN74AS174N

Flip Flops FAQ

Does the SN74AS174NS have an active-low or active-high reset?

The device features a master reset input that is typically active-low, allowing all flip-flops to be cleared to a low state simultaneously upon assertion.

What is the maximum operating frequency for this component?

While the datasheet specifies a propagation delay of 10 ns, the maximum clock frequency is determined by the setup and hold time requirements specified in the official electrical characteristics table.