54FCT573CTDB

Overview

The 54FCT573CTDB 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 propagation delay of 8ns. The device is housed in a 20-CDIP package with a pin spacing of 0.300 inches (7.62mm). It functions as a single circuit with eight bits and is rated for an operating temperature range from -55°C to +125°C.

Feature Summary

• Octal transparent latch architecture with three-state outputs
• Compatible with TTL input and output levels
• High drive capability for bus-oriented applications
• Power-off disable function for live insertion support

Applications

• Bus-oriented data storage systems
• Military-grade electronic equipment
• High-reliability industrial control interfaces
• Data acquisition modules requiring live insertion

Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm RoHS compliance requirements as the part is non-compliant. Validate package dimensions against existing PCB footprints. Check for recent product change notices regarding labeling or material updates. Ensure thermal management meets military specifications during operation.

Selection Notes

Select this component for designs requiring high-speed latching with robust drive capabilities. Consider the wide operating temperature range for harsh environments. Evaluate the trade-off between the 8ns delay and system timing requirements. Verify compatibility with existing logic families and power supplies. Assess availability constraints given the discontinued status.

Part Context

This part belongs to the FCT logic family, designed for high-speed CMOS applications with TTL compatibility. It serves as a military-grade alternative to commercial variants, offering extended temperature ranges and enhanced reliability standards. The series is widely used in aerospace and defense electronics where performance under extreme conditions is critical.

Replacement Considerations

Consult official replacement lists for equivalent parts such as the 54FCT573T or 54FCT573ATE. Verify pinout and electrical parameter compatibility before substitution. Review manufacturer notices for any functional differences in newer revisions.