CD74HC173PWT

Overview

The CD74HC173PWT is a Texas Instruments logic device belonging to the HC series, featuring four D-type flip-flops with 3-state outputs in a TSSOP-16 package. It operates within a supply voltage range of 2 V to 6 V and supports surface-mount installation. The component exhibits a propagation delay of 200 ns, with high-level output current at -7.8 mA and low-level output current at 7.8 mA. It functions across an extended temperature range from -55 °C to +125 °C.

Feature Summary

• Contains four edge-triggered D-type flip-flops for parallel data storage
• Features tri-state outputs controlled by dual enable inputs for bus driving
• Includes an asynchronous master reset input for immediate clearing of all stages

Applications

• High-speed disk and tape controllers
• Communication buffer applications
• Parallel loading register circuits

Procurement Notes

Verify the specific suffix 'PWT' against official manufacturer documentation to confirm the exact reel quantity and tape specifications. Ensure the part number matches the active status listed in current catalogs, as availability may vary by region. Cross-reference the TSSOP-16 package dimensions with your PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring synchronous data latching with tri-state capability. The HC series offers compatibility with standard CMOS logic levels. Consider the wide operating temperature range if the application involves harsh environmental conditions. Verify that the 2V to 6V supply voltage aligns with the system power architecture.

Part Context

This part belongs to the CD74HC173 family of quad D-type flip-flops. Similar variants include the CD74HC173PW and CD74HC173E, which share identical logical functionality but differ in packaging or reel configuration. The device is manufactured using silicon gate CMOS technology, ensuring low power consumption and high noise immunity typical of the HC logic family.

Replacement Considerations

Compatible substitutes include the SN74HC173PWR and SN74HC173PW. These parts maintain functional equivalence within the same logic family. Verify pinout compatibility and electrical characteristics before substitution.