CD74FCT16952ATSM

Overview

The CD74FCT16952ATSM 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-pin plastic small outline (PDSO56) package. It operates within a supply voltage range of 4.5 V to 5.5 V, with a nominal rating of 5.5 V. 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. The component supports an operating temperature range from -40 °C to 85 °C.

Feature Summary

• Registered bus transceiver architecture providing latched data storage for bidirectional communication
• Independent output enable control for each transmission direction
• Three-state outputs integrated with series resistors for signal integrity

Applications

• High-speed bidirectional data buses in industrial systems
• Memory interface circuits requiring registered buffering
• Digital signal processing data pathways

Procurement Notes

Verify the manufacturer designation as Harris Corporation or its successor entity L3Harris Technologies. Confirm the specific suffix 'TSM' corresponds to the 56-SSOP package variant. Ensure compatibility with the specified 4.5V to 5.5V logic levels. Check for RoHS compliance status if required by project specifications, as original documentation may indicate non-compliance depending on production era.

Selection Notes

Select this component when registered bidirectional transfer is required for 8-bit wide buses. The FCT series offers faster switching speeds compared to standard HC/HCT logic. The 56-pin SSOP package suits space-constrained surface-mount designs. Verify that the 3.7 ns propagation delay meets system timing requirements. Ensure the input voltage levels are compatible with the driving source within the 4.5V to 5.5V operational window.

Part Context

This device belongs to the Harris FCT (Fast CMOS) family, designed for high-performance digital applications. It serves as a registered version of the unbuffered bus transceiver, adding internal latching capabilities. The FCT line bridges the speed gap between standard CMOS and ECL technologies while maintaining CMOS power efficiency. The CD prefix indicates commercial grade temperature range support alongside the extended industrial option.

Replacement Considerations

Cross-reference with other FCT-series registered transceivers such as the CD74FCT162952ETSM96 for similar functionality. Verify pinout compatibility before substitution. Ensure the replacement part supports the same 56-pin SSOP form factor and 5.5V operation.