74AC573SJX

Latches Overview

The Fairchild Semiconductor 74AC573SJX is an octal D-type latch featuring three-state outputs, belonging to the AC logic series. It utilizes CMOS technology for high-speed operation and low power consumption. The device is housed in a 20-pin Small Outline package (SOP-20). Key electrical parameters include a supply voltage range of 2.0V to 6.0V, with typical propagation delays varying based on voltage levels. It supports standard TTL input compatibility and offers balanced propagation delays for reliable data latching in digital systems.

Latches Feature Summary

• Octal configuration providing eight independent D-type latch channels within a single integrated circuit.
• Three-state output capability allowing direct connection to bus structures without external buffers.
• CMOS fabrication ensuring low power dissipation while maintaining high-speed performance comparable to bipolar equivalents.

Latches Applications

• Parallel-to-serial data conversion circuits
• Bus-oriented memory address latching
• Register files in microprocessor-based systems

Latches Procurement Notes

Verify the specific suffix 'SJX' against official Fairchild or ON Semiconductor documentation to confirm exact packaging and tape-and-reel specifications. Ensure the component matches the required AC series performance characteristics rather than HC or HCT variants. Cross-reference ordering codes with current manufacturer catalogs as legacy part numbers may have superseded designations.

Latches Selection Notes

Select this component when an octal latch with three-state outputs is required for bus applications. The AC series offers faster switching speeds compared to standard HC logic but consumes more power. Verify that the operating voltage range aligns with the system's 2.0V to 6.0V requirement. Consider the SOP-20 package dimensions for PCB layout constraints.

Latches Part Context

The 74AC573 is part of the broader 74AC family of advanced CMOS logic devices. This family bridges the performance gap between standard CMOS and bipolar TTL technologies. The SJX variant specifically denotes the small outline package configuration, distinguishing it from DIP or PLCC alternatives within the same logical function set.

Latches Replacement Considerations

Equivalent parts include the MC74AC573DR2G and SN74AC573N. Verify pinout compatibility and electrical specifications before substitution. Note that some replacements may differ in package type or manufacturing origin.