CD74HC173NSRG4

Overview

The CD74HC173NSRG4 is a high-speed CMOS quad D-type flip-flop manufactured by Texas Instruments. It features four independent D-type flip-flops with tri-state outputs, designed for low power consumption and compatibility with standard CMOS logic families. The device operates within a supply voltage range of 2 V to 6 V and supports surface-mount installation in an 8-pin SOIC package. Key electrical characteristics include a propagation delay of 200 ns at 5 V, with output drive capabilities of -7.8 mA (high) and 7.8 mA (low). It functions reliably across an extended industrial temperature range from -55 °C to +125 °C.

Feature Summary

• Contains four independent D-type flip-flops with tri-state outputs for flexible bus interfacing
• Operates over a wide supply voltage range from 2 V to 6 V for versatile system integration
• Supports extended industrial temperature operation from -55 °C to +125 °C

Applications

• Parallel data storage in digital systems
• Shift register applications requiring tri-state control
• High-speed data buffering and latching circuits

Procurement Notes

Verify the complete part number including the G4 suffix to ensure compliance with RoHS directives and lead-free manufacturing standards. Confirm the package type corresponds to the NSR designation, which indicates a specific small-outline package variant. Cross-reference the manufacturer's latest datasheet revision to validate pinout configurations and electrical specifications against current production versions before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring multiple independent D-type registers with tri-state output capability. It is suitable for applications demanding low power consumption and wide operating voltage ranges typical of HC series logic. Ensure the design accommodates the specified propagation delay and output current requirements. Consider the thermal performance and package constraints for PCB layout optimization in high-density designs.

Part Context

This component belongs to the CD74HC173 family of quad D-type flip-flops. It is part of Texas Instruments' broader portfolio of high-speed CMOS logic devices. The HC series is known for its compatibility with standard TTL logic levels while offering improved speed and lower power consumption compared to older NMOS technologies. This specific variant includes environmental compliance markings indicated by the suffix.

Replacement Considerations

Compatible substitutes include other quad D-type flip-flops with tri-state outputs from the same logic family, such as the CD74HC173M or SN74HC173N, provided pinouts and electrical characteristics match the design requirements.