54FCT573ATDB

Overview

The 54FCT573ATDB is an octal transparent latch featuring three-state outputs, manufactured by Renesas Electronics Corporation. It operates within a supply voltage range of 4.5V to 5.5V and supports a military-grade temperature range from -55°C to +125°C. The device utilizes FCT/CMOS technology with low input and output leakage currents, typically less than 1 µA. It provides high drive outputs capable of sourcing -15 mA and sinking 48 mA, ensuring true TTL compatibility with typical VOH of 3.3V and VOL of 0.3V. The component is housed in a 20-pin CDIP package.

Feature Summary

• Octal transparent latch architecture with three-state outputs for bus-oriented applications
• High drive output capability supporting live insertion via power-off disable
• True TTL input and output compatibility with low leakage CMOS power levels

Applications

• Bus-oriented data storage systems
• Military grade electronic equipment requiring extended temperature operation
• Live insertion peripheral interfaces

Procurement Notes

Verify the specific suffix ATDB against official Renesas documentation to confirm package type and speed grade. Confirm RoHS compliance status as historical records indicate non-compliance for this series. Check for Product Change Notices regarding lead finish or marking changes. Validate that the supplier provides traceability for military-grade components. Ensure the source document explicitly lists 54FCT573ATDB as the active part number.

Selection Notes

Select this component when designing systems requiring octal latching with high current drive capabilities in harsh environments. The FCT logic family offers faster switching speeds compared to standard 54F series devices. Consider the 20-pin CDIP package constraints for through-hole mounting. Verify that the system voltage remains within the 4.5V to 5.5V operating window to maintain timing specifications.

Part Context

This part belongs to the 54FCT573T family of octal transparent latches. It shares functional similarities with other FCT series devices but is distinguished by its military temperature rating and specific package configuration. The 54 prefix indicates compliance with MIL-STD-883 standards, differentiating it from commercial 74FCT variants which have narrower operating temperature ranges.