CY74FCT16543ATPACT

Overview

The CY74FCT16543ATPACT is a 16-bit registered bus transceiver manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and features TTL-compatible input and output levels. The device provides three-state outputs with a low-level output current of 64 mA and a high-level output current of -32 mA. It exhibits a propagation delay of 6.5 ns and supports a maximum power dissipation of 1 W. Designed for surface-mount installation, it is housed in a TSSOP-56 package and functions across an operating temperature range from -40°C to +85°C.

Feature Summary

• Provides latched data storage capability integrated directly into the bus transceiver function.

Applications

• High-density data buffering applications requiring registered interfaces.

Procurement Notes

Verify component authenticity through authorized distribution channels due to potential availability constraints. Confirm that the specific TSSOP-56 package variant matches the design requirements. Ensure compliance with RoHS directives as indicated in official documentation. Review the manufacturer's datasheet for any recent product change notices or lifecycle status updates prior to final procurement decisions.

Selection Notes

Select this component when a 16-bit width is required alongside internal data latching functionality. The FCT logic series offers superior switching speeds compared to standard CMOS alternatives. Verify that the system operates within the specified 4.5 V to 5.5 V voltage window. Ensure the PCB layout accommodates the TSSOP-56 footprint and thermal dissipation needs for the 1 W power rating.

Part Context

This part belongs to the FCT logic family, which bridges the performance gap between older bipolar technologies and modern CMOS solutions. It is specifically categorized as a registered bus transceiver, distinguishing it from non-latched variants like the 74FCT543. The device serves as a critical interface element in systems demanding synchronized data transfer across wide buses.

Replacement Considerations

Consult official substitution guides for equivalent registered transceivers within the same logic family. Verify pin compatibility and electrical specifications before replacing obsolete inventory.