SN74HC573ADW

Overview

The SN74HC573ADW is an octal transparent D-type latch manufactured by Texas Instruments, belonging to the SN74HC573A series. It features eight D-type latches with three-state outputs in a 20-pin SOIC package. The device operates within a supply voltage range of 2 V to 6 V and supports a wide operating temperature range from -40°C to +85°C. Key electrical parameters include a propagation delay of 200 ns at 2 V, 40 ns at 4.5 V, and 34 ns at 6 V. Static current is specified at 8 uA, with low-level output current capability of 32 mA and high-level output current of -7.8 mA.

Feature Summary

• Provides octal transparent latching functionality for data storage applications
• Integrates three-state outputs to facilitate bus-driven systems
• Compatible with standard CMOS logic families for broad interoperability

Applications

• Bus-oriented memory mapping
• Registering and buffering digital signals
• Driving capacitive or resistive loads in digital circuits

Procurement Notes

Verify the specific suffix 'DW' corresponds to the 20-SOIC package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the selected component matches the required operating temperature range and voltage specifications for the target application environment.

Selection Notes

Select this component for designs requiring octal latching with tri-state control in surface-mount applications. Compare against other package options like ADWR (SOIC) or APWR (TSSOP) based on board space constraints. Verify that the HC series speed and drive current meet the system timing and load requirements.

Part Context

This part belongs to the SN74HC573A family of octal transparent D-type latches. It shares functional characteristics with variants such as SN74HC573ADWR and SN74HC573APWT, differing primarily in packaging style. The device is designed for general-purpose digital logic applications requiring reliable data retention and bus isolation capabilities.

Replacement Considerations

SN74HC573ADWRG4 is listed as an alternative variant within the same product line.