SN74ACT573PWR

Overview

The SN74ACT573PWR is an octal D-type transparent latch with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5V to 5.5V and features TTL-voltage compatible inputs. The device provides a maximum propagation delay of 9.5ns at 5V. It is housed in a 20-pin TSSOP package.

Feature Summary

• Features 3-state outputs designed for driving highly capacitive or low-impedance loads.
• Inputs accept voltages up to 5.5V, ensuring compatibility with standard logic levels.
• Buffered output-enable input allows placement of outputs in high-impedance state without affecting internal latch operations.

Applications

• Parallel data storage
• Digital bus buffer
• Bus drivers

Procurement Notes

Verify the specific ordering suffix 'PWR' corresponds to the TSSOP-20 package variant when sourcing. Confirm RoHS compliance and lead finish details via the manufacturer's current packaging addendum. Ensure the procurement channel sources active production parts rather than obsolete or NRND variants.

Selection Notes

Select this component for designs requiring eight-bit latching with bus isolation capabilities. The ACT series offers speed suitable for general-purpose digital systems operating at 5V. Consider the TSSOP package constraints regarding thermal dissipation and board space requirements compared to other available pin configurations.

Part Context

This part belongs to the SNx4ACT573 family of octal D-type transparent latches. The family includes military (SN54ACT573) and catalog (SN74ACT573) versions. Other package options include SSOP, SOIC, PDIP, SOP, and VQFN, providing flexibility for different mounting styles and thermal needs.

Replacement Considerations

Direct functional replacements within the same family include SN74ACT573DBR (SSOP), SN74ACT573DWR (SOIC), and SN74ACT573N (PDIP). Verify pinout compatibility and package dimensions before substituting.