CD74AC175NSR

Overview

The CD74AC175NSR is a quadruple D-type flip-flop manufactured by Texas Instruments, belonging to the AC logic family. It features four independent D-type flip-flops with complementary outputs and an asynchronous clear function. The device operates within a supply voltage range of 1.5 V to 5.5 V and supports a wide operating temperature range from -55 °C to +125 °C. It utilizes a 16-pin Small Outline Package (SOIC) for surface-mount installation. The component provides high-speed performance with balanced propagation delays and offers robust electrostatic discharge protection exceeding 2000 V.

Feature Summary

• Integrates four independent D-type flip-flops with complementary outputs in a single package
• Includes an asynchronous clear input to reset all flip-flops simultaneously
• Features balanced propagation delays suitable for high-speed memory decoding applications
• Provides high noise immunity and strong output drive capabilities across the full voltage range

Applications

• High-performance memory systems requiring fast data storage
• Data routing circuits in complex digital systems
• Parallel-to-serial or serial-to-parallel conversion modules
• General-purpose register designs in industrial control equipment

Procurement Notes

Verify the specific ordering suffix to ensure the correct package type and environmental compliance status match the design requirements. Confirm that the manufacturer designation aligns with the intended source, as components may be distributed through authorized channels or secondary markets. Ensure the part number corresponds exactly to the SN74S175 equivalent specifications if cross-referencing with legacy S-series designs. Validate RoHS compliance documentation prior to integration into regulated assemblies.

Selection Notes

Select this component when a compact solution for quadruple D-type storage with complementary outputs is required. The AC logic series offers superior speed compared to standard TTL equivalents while maintaining low power consumption. Consider the wide operating temperature range for harsh environment applications. The SOIC package facilitates automated surface-mount assembly processes. Evaluate the asynchronous clear functionality against synchronous reset requirements for the specific system architecture.

Part Context

This device is part of the Texas Instruments CD74AC logic family, designed for CMOS applications requiring high speed and low power. It serves as a modern replacement for older SN74S175 devices, offering improved electrical characteristics and broader voltage compatibility. The AC series is widely used in computing and telecommunications infrastructure where reliable data latching and fast transition times are critical for system performance and stability.

Replacement Considerations

The SN74S175NSR is a documented substitute part number for this component. Verify pinout compatibility and logic level thresholds when transitioning between the S-series and AC-series variants. Ensure that the clear signal timing requirements remain consistent with the new device specifications.