54FCT573TLB

Overview

The IDT 54FCT573TLB is an octal transparent latch featuring three-state outputs, designed for bus-oriented applications within the FCT series. It operates on a single 5 V supply and supports a wide industrial temperature range from -55°C to +125°C. The device utilizes Fast CMOS technology to provide high-speed data latching with low power consumption. It is housed in a 20-lead Thin Small Outline Package (TSOP) suitable for surface-mount assembly.

Feature Summary

• Octal configuration providing eight independent D-type transparent latch channels
• Three-state outputs enabling direct connection to system buses without external buffers
• Transparent operation when Latch Enable is high, capturing data upon transition to low
• Industrial temperature rating supporting reliable performance in extreme environments

Applications

• Bus-oriented memory mapping systems
• High-speed data buffering in communication interfaces
• Register file storage in embedded processing architectures

Procurement Notes

Verify the specific suffix TLB confirms the TSOP-20 package variant. Confirm RoHS compliance status as military-grade variants often differ from commercial standards. Validate that the manufacturer designation matches current Renesas Electronics ownership following the IDT acquisition. Ensure the ordering part number aligns with the required lead time and availability constraints.

Selection Notes

Select this component when an octal latch with tri-state capability is required for bus isolation. Compare propagation delay specifications against system timing requirements. Consider the thermal characteristics of the TSOP package for PCB layout optimization. Verify voltage compatibility with the 5V logic family used in the target design.

Part Context

This device belongs to the FCT (Fast CMOS Technology) family, which bridges the speed gap between standard TTL and advanced CMOS technologies. The 54FCT prefix indicates military-grade qualification, ensuring reliability under harsh conditions compared to the commercial 74FCT equivalent.