CD74HCT173M

Overview

The CD74HCT173M is a 4-bit D flip-flop from the HCT series, manufactured by Harris Corporation. It features positive edge triggering and true outputs with three-state capability. The device operates on a 5 V supply voltage and supports a maximum frequency of 13 MHz. It has a load capacitance of 50 pF and a maximum output current of 6 mA. The component functions as a single-function logic circuit with four bits. It is designed for operation within a temperature range of -40 °C to 85 °C.

Feature Summary

• Positive edge triggered D flip-flop architecture
• Three-state output capability for bus driving
• CMOS technology compatible with TTL inputs

Applications

• Parallel data storage in digital systems
• Shift register construction
• Timing control circuits

Procurement Notes

Verify the manufacturer designation as Harris Corporation or its successor entities, noting that Texas Instruments acquired Harris Semiconductor assets. Confirm the specific suffix 'M' corresponds to the intended package type and thermal characteristics. Ensure compatibility with the required operating temperature range and supply voltage specifications before integration into final designs.

Selection Notes

Select this component when a 4-bit parallel load register with tri-state outputs is required. The HCT series ensures compatibility with standard TTL logic levels while maintaining CMOS power efficiency. Consider the package availability and lead times associated with legacy semiconductor manufacturers. Verify that the positive edge trigger aligns with the system clocking scheme.

Part Context

This part belongs to the CD74HCT family of high-speed CMOS logic devices originally developed by Harris Semiconductor. The HCT series bridges the gap between low-power CMOS and standard TTL logic families. Harris Corporation was a significant player in the semiconductor industry before its acquisition by Intersil and subsequent transactions involving Texas Instruments.

Replacement Considerations

Public confirmed substitute part numbers include CD74HCT173E and CD74HCT173.