54FCT573TDB

Overview

The 54FCT573TDB is an octal transparent latch with three-state outputs manufactured by Renesas Electronics Corporation. It operates within a supply voltage range of 4.5V to 5.5V and supports a wide operating temperature range from -55°C to +125°C. The device features high drive outputs capable of sourcing -15mA and sinking 48mA, ensuring compatibility with TTL loads. It utilizes a 20-pin CDIP package and exhibits low input and output leakage currents below 1 µA.

Feature Summary

• Octal transparent latch architecture with three-state outputs for bus-oriented applications
• High drive output capability supporting direct interface to TTL loads
• Low leakage current characteristics maintaining standard CMOS power levels
• Military-grade reliability compliant with MIL-STD-883 Class B specifications

Applications

• Bus-oriented data storage systems requiring transparent latching
• Industrial control environments necessitating extended temperature operation
• Military electronic systems adhering to strict reliability standards
• Live insertion circuits utilizing power-off disable functionality

Procurement Notes

Verify component authenticity through authorized distributors due to military compliance requirements. Confirm package integrity for the 20-pin CDIP configuration. Check for RoHS non-compliance status as indicated in official documentation. Ensure supply chain stability given potential discontinuation notices associated with legacy FCT series components.

Selection Notes

Select this component when designing systems requiring octal latching with high drive strength and wide temperature tolerance. The three-state outputs facilitate efficient bus sharing in complex digital architectures. Consider the specific pinout and package dimensions for PCB layout compatibility. Evaluate thermal management requirements given the extended operational temperature range.

Part Context

This part belongs to the FCT (Fast CMOS) logic family, bridging the performance gap between standard CMOS and TTL technologies. It offers speed comparable to LS-TTL while maintaining CMOS power advantages. The 54-series designation indicates military-grade qualification, distinguishing it from commercial 74-series counterparts. This lineage ensures robust performance in demanding aerospace and defense applications.

Replacement Considerations

The 54FCT573ATDB serves as a verified alternative within the same product line. Both variants share identical functional specifications and pin configurations. Verify package compatibility before substitution. Consult manufacturer PCNs for any recent design or labeling changes affecting interchangeability.