SN74AS174DR

Flip Flops Overview

The SN74AS174DR is a hex D-type flip-flop from the Texas Instruments AS logic series, housed in a 16-SOIC surface-mount package. It features positive-edge triggering and non-inverting outputs with 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. Static current (Iq) is specified at 45 mA. The component supports an operating temperature range of 0°C to +70°C.

Flip Flops Feature Summary

• Integrates six independent D-type flip-flops with positive-edge clock triggering for sequential data storage.
• Includes a dedicated master reset input to asynchronously clear all flip-flop outputs simultaneously.
• Delivers non-inverting true outputs compatible with standard TTL logic levels.

Flip Flops Applications

• Parallel-to-serial data conversion circuits
• Shift register implementations
• General-purpose digital memory storage elements

Flip Flops Procurement Notes

Verify the specific suffix 'DR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the AS logic family specifications align with the target system's power and speed requirements. Ensure the SOIC-16 footprint matches the design layout. Check RoHS compliance status if environmental regulations apply to the final product.

Flip Flops Selection Notes

Select this component when high-speed performance is critical, as the AS series offers faster switching than standard 74LS counterparts. Consider the higher static power consumption compared to CMOS alternatives like the AHC series. Evaluate the 16-SOIC package constraints against available board space. Ensure the 4.5 V to 5.5 V supply range fits the system architecture.

Flip Flops Part Context

This part belongs to the Texas Instruments SN74AS174 series, representing the Advanced Schottky logic family. It serves as the surface-mount variant of the through-hole SN74AS174N. The device provides enhanced speed characteristics suitable for demanding digital applications while maintaining compatibility with existing TTL-based designs.

Flip Flops Replacement Considerations

SN74AS174N: Through-hole equivalent with identical logical functionality but different mounting style. SN74ALS174: Lower power alternative within the ALS family, though with slightly reduced speed. SN74AHC174: CMOS replacement offering lower power consumption and wider voltage range, requiring level shifting considerations.