SN74AHC573DBR

Overview

The SN74AHC573DBR is an octal transparent D-type latch manufactured by Texas Instruments, belonging to the AHC logic series. It features eight D-type latches with tri-state outputs in a 20-pin SSOP package. The device operates within a supply voltage range of 2V to 5.5V. Key electrical parameters include a propagation delay of 14.5ns and 8.8ns, static current of 4uA, low-level output current of 32mA, and high-level output current of -8mA. It supports a wide operating temperature range from -40°C to +125°C.

Feature Summary

• Octal transparent D-type latch architecture with tri-state outputs
• Wide operating voltage range supporting 2V to 5.5V applications
• High-speed performance with low propagation delays
• Low static power consumption for energy-efficient operation

Applications

• Data register storage in digital systems
• Buffering and bus-oriented communications
• Clocked memory modules
• Parallel-to-serial data conversion interfaces

Procurement Notes

Verify the specific ordering suffix 'DBR' corresponds to the SSOP-20 package and reel packaging configuration. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the manufacturer part number matches exactly to avoid pinout or electrical specification mismatches during integration.

Selection Notes

Select this component when a wide 2V to 5.5V supply range is required compared to standard 5V-only logic families. The AHC series offers faster switching speeds than HC counterparts while maintaining CMOS low power characteristics. Consider the SSOP-20 package constraints for PCB layout density and thermal management capabilities in your design environment.

Part Context

This device is part of the SN74AHC573 family of octal D-type latches. It shares functional similarities with other Texas Instruments logic ICs but is distinguished by its advanced high-speed CMOS technology and extended voltage compatibility. The family provides standardized pinouts for easy replacement in existing designs requiring upgraded performance metrics.

Replacement Considerations

Direct substitutes include SN74AHC573DWR (same function, different tape/reel packaging) and SN74AHC573DWRE4 (lead-free variant). Cross-series replacements like SN74HC573 offer similar functionality but lack the 2V low-voltage support. Verify package dimensions and electrical tolerances before substituting.