CD74HCT173MT

Overview

The CD74HCT173MT is a high-speed CMOS logic device manufactured by Texas Instruments, housed in a 16-SOIC surface-mount package. It functions as a quad synchronous D-type flip-flop with clear and clock enable capabilities. The component operates within a supply voltage range of 4.5V to 5.5V and supports a maximum clock frequency of 80 MHz. It features non-inverting outputs and includes an asynchronous master reset input for immediate state clearing. The device is designed for industrial temperature ranges from -55°C to +125°C.

Feature Summary

• Provides four independent edge-triggered D-type flip-flops with synchronous data loading.
• Features an asynchronous master reset input that clears all flip-flops immediately upon activation.
• Includes dual clock enable inputs to control data transfer relative to the clock signal.
• Offers three-state outputs controlled by separate enable logic for bus driving applications.

Applications

• High-speed disk and tape controllers
• Communication buffer circuits
• Parallel-to-serial conversion modules
• Data register storage systems

Procurement Notes

Verify the specific manufacturer datasheet revision to confirm pinout compatibility and electrical characteristics. Ensure the selected variant matches the required operating temperature range and packaging style for your PCB design. Cross-reference the ordering suffix with official documentation to validate functional equivalence before integration.

Selection Notes

Select this component when designing systems requiring precise synchronous data latching with independent clock control. The HCT series ensures TTL-compatible input thresholds while maintaining CMOS low power consumption. Consider the SOIC package dimensions and thermal properties during layout planning to ensure reliable operation under specified load conditions.

Part Context

This part belongs to the Texas Instruments 74HCT logic family, which bridges the performance gap between standard HC logic and older TTL technologies. The CD74HCT173 specifically addresses applications needing multiple synchronized storage elements within a single integrated circuit, offering robust noise immunity and fast switching speeds suitable for complex digital timing sequences.

Replacement Considerations

Public confirmed substitute part numbers include CD74HCT173E and SN74HCT173N. Verify pin compatibility and electrical specifications against the original datasheet before substitution.