CD74FCT162952ETSM

Overview

The CD74FCT162952ETSM is a registered bus transceiver from the FCT series, manufactured by Harris Corporation. It features two independent functions, each handling eight bits of data with true output polarity. The device utilizes CMOS technology and is housed in a 56-terminal plastic small outline package (PDSO56). It operates within a supply voltage range of 4.5 V to 5.5 V, with a nominal rating of 5 V. The component supports an operating temperature range from -40 °C to 85 °C. Key electrical characteristics include a propagation delay of 3.7 ns and a load capacitance of 50 pF. Outputs are three-state with series resistors.

Feature Summary

• Registered bus transceiver architecture providing data storage at the receiving end for synchronized system operation.
• Independent output enable control for each transmission direction, allowing flexible bidirectional data flow management.
• Bus hold inputs eliminate the need for external pull-up resistors, simplifying circuit design and reducing component count.

Applications

• High-speed data acquisition systems requiring registered input buffering
• Clock distribution networks needing precise timing synchronization
• Multiprocessor communication buses utilizing registered interfaces

Procurement Notes

Verify the specific suffix ETSM against official Harris or successor manufacturer datasheets to confirm pinout compatibility and package dimensions. Ensure the source document explicitly lists this part number as a registered bus transceiver with independent direction enables. Confirm RoHS status and lead time requirements directly with authorized distributors, as legacy components may have limited availability.

Selection Notes

Select this component when registered bidirectional data transfer is required with independent direction control. The FCT series offers high-speed performance suitable for demanding digital interfaces. Consider the 56-pin SSOP/TSSOP form factor for space-constrained designs. Verify that the 3-state outputs with series resistors match the load requirements of the destination logic family.

Part Context

This device belongs to the Harris FCT (Fast CMOS) logic family, designed for high-speed applications. The CD74FCT162952 variant specifically integrates registration capabilities, distinguishing it from standard unregistered bus transceivers. Harris Corporation was a primary manufacturer before its semiconductor assets were acquired by other entities, making original documentation critical for verification.

Replacement Considerations

Check for direct cross-references from Cypress Semiconductor, which acquired Harris's logic business. Equivalent parts may include CY74FCT162952 variants with different packaging suffixes. Verify functional equivalence regarding the registered nature and independent enable controls before substitution.