SN74HC573BPWR

Overview

The SN74HC573BPWR is an octal transparent D-type latch with tri-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and features low static current consumption of 8 uA. The device provides high noise immunity and is designed for surface mount applications in a 20-TSSOP package. Propagation delays vary from 34 ns at 6 V to 40 ns at 4.5 V, with a maximum of 200 ns at 2 V. It supports low-level output currents of 32 mA and high-level output currents of -7.8 mA, operating reliably between -40°C and +85°C.

Feature Summary

• Octal transparent D-type latch architecture with tri-state outputs
• Wide operating voltage range supporting 2 V to 6 V systems
• High noise immunity and low static power consumption
• Surface-mount TSSOP-20 packaging for compact integration

Applications

• Data register storage in digital logic circuits
• Buffering and bus-oriented communications
• Parallel-to-serial conversion interfaces
• General-purpose memory applications requiring latching functionality

Procurement Notes

Verify the specific suffix 'BPWR' against the manufacturer's official datasheet to confirm the tape-and-reel packaging configuration and pinout compatibility. Ensure the procurement source provides valid RoHS compliance documentation. Cross-reference the part number with the latest Texas Instruments product selection guide to confirm active status and availability of technical support resources before finalizing orders.

Selection Notes

Select this component when an octal latch with tri-state capability is required for data holding in HC logic families. Consider the 2 V to 6 V supply range for flexibility in system design. Evaluate propagation delay specifications relative to clock speeds. Compare pinout and package dimensions against existing board layouts to ensure mechanical fit within the 20-TSSOP form factor constraints.

Part Context

This device belongs to the SN74HC573A series of octal D-type latches. It shares functional similarities with other HC family latches but offers specific tri-state output control. The BPWR designation indicates a specific reel-based packaging variant intended for automated surface-mount assembly processes, distinguishing it from bulk or tube-packaged equivalents.

Replacement Considerations

SN74HC573APWR is a verified alternative with identical electrical characteristics and pinout, differing primarily in packaging supplier or minor manufacturing lot variations. Verify that any substitute maintains the same 20-TSSOP footprint and tri-state logic behavior.