SN74AS174D

Flip Flops Overview

The SN74AS174D is a hex D-type flip-flop from the Texas Instruments AS logic series, housed in a 16-pin SOIC package. It features positive-edge triggering and includes a master reset function. The device operates within a supply voltage range of 4.5 V to 5.5 V. Key electrical parameters include a propagation delay of 10 ns at 5 V with 50 pF load, high-level output current of -2 mA, and low-level output current of 20 mA. It supports through-hole or surface-mount installation depending on variant, with an operating temperature range of 0°C to +70°C.

Flip Flops Feature Summary

• Hex D-type flip-flop architecture with six independent data storage elements
• Positive-edge clock triggering mechanism for precise timing control
• Master reset functionality for synchronous system initialization
• TTL-compatible input and output characteristics for standard logic interfacing

Flip Flops Applications

• Parallel-to-serial data conversion circuits
• Shift register implementations in digital systems
• State machine memory elements in control logic
• Buffering and synchronization of digital signals

Flip Flops Procurement Notes

Verify the exact suffix (e.g., DR vs D) against the manufacturer datasheet to confirm package type and pinout compatibility. Ensure the selected variant matches the required operating temperature range and supply voltage specifications for the target application environment. Cross-reference RoHS compliance status if environmental regulations apply to the final product assembly.

Flip Flops Selection Notes

Select this component when high-speed performance is required within the 74AS family constraints. Compare propagation delay and drive current requirements against system timing budgets. Consider thermal management needs given the AS series power consumption characteristics relative to lower-power alternatives like AHC or ALS families.

Flip Flops Part Context

The SN74AS174D belongs to the Texas Instruments 74AS (Advanced Schottky) logic family, known for high speed but higher power consumption compared to later CMOS technologies. It serves as a direct replacement for older 74S174 designs while offering improved switching speeds. The SOIC package provides surface-mount convenience for modern PCB layouts.

Flip Flops Replacement Considerations

• SN74AS174DR (SOIC-16 tape and reel)
• SN74AS174N (PDIP-16 through-hole)