SN74ACT573DWRG4

Overview

The SN74ACT573DWRG4 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 inputs that accept voltages up to 5.5V, ensuring TTL-voltage compatibility. The device provides high drive capability for low-impedance loads, with maximum propagation delays of 9.5ns at 5V. It is housed in a 20-pin SOIC package.

Feature Summary

• Features three-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads.
• Includes buffered output-enable (OE) input to place outputs in normal logic states or high-impedance state without affecting internal latch operations.
• Inputs are compatible with TTL voltage levels and accept voltages up to the maximum VCC rating.

Applications

• Parallel data storage
• Digital bus buffer

Procurement Notes

Verify the specific ordering suffix 'G4' against current manufacturer documentation to confirm lead-free status and RoHS compliance details. Ensure the SOIC-20 package dimensions match your PCB footprint requirements. Confirm the active production status directly with Texas Instruments as product availability may change.

Selection Notes

Select this component when designing systems requiring octal latching with high-drive capabilities for bus applications. The ACT series offers faster switching speeds compared to standard HC logic. Verify that the 4.5V to 5.5V operating voltage aligns with your system's power supply rails and that the 20-pin SOIC package fits your assembly constraints.

Part Context

This part belongs to the SNx4ACT573 family of octal D-type transparent latches. The 'SN74' prefix indicates catalog-grade commercial performance, while 'ACT' denotes Advanced CMOS technology. The 'DW' suffix specifies the SOIC package type, and 'R' indicates tape-and-reel packaging. The 'G4' suffix typically signifies lead-free and RoHS-compliant manufacturing.

Replacement Considerations

Direct replacements include other SN74ACT573 variants with different packages such as SN74ACT573DBR (SSOP) or SN74ACT573PWR (TSSOP). Cross-brand equivalents from manufacturers like onsemi may be available but require verification of pinout and electrical specifications.