CY74FCT163543CPVCT

Overview

The CY74FCT163543CPVCT is a registered bus transceiver from the FCT series, manufactured by Texas Instruments. It features two independent 8-bit functions within a single package, providing bidirectional data transfer capabilities with latching. The device utilizes CMOS technology and operates within a supply voltage range of 4.75V to 5.25V. It is housed in a 56-pin Thin Shrink Small Outline Package (TSSOP) with a pitch of 0.4mm. The component supports an operating temperature range from -40°C to +85°C and includes three-state outputs for effective bus management.

Feature Summary

• Provides registered bidirectional data transfer with independent direction control for each byte pair
• Features internal latching mechanism to hold data states independently of input changes
• Supports high-speed operation suitable for demanding system applications

Applications

• High-performance microprocessor systems requiring registered data buffering
• Memory mapping circuits involving address and data latching
• Bidirectional bus architectures needing controlled data flow isolation

Procurement Notes

Verify the specific suffix CPVCT against the manufacturer's current datasheet to confirm pinout compatibility and package dimensions. Ensure the source document explicitly lists this part number as active or qualified for new designs. Cross-reference the RoHS status and moisture sensitivity level requirements with your assembly process specifications before procurement.

Selection Notes

Select this component when registered bidirectional transfer with latching is required rather than transparent transmission. Compare against the non-latched CY74FCT162543 if timing constraints allow for transparent operation. Verify that the 56-pin TSSOP footprint fits the available PCB space and that the thermal characteristics meet the system's dissipation requirements under maximum load conditions.

Part Context

This device belongs to the Fast CMOS (FCT) logic family, designed for high-speed digital applications. It serves as a bridge between different logic levels or system segments, offering improved performance over standard TTL equivalents. The registered nature distinguishes it from simple transceivers by adding storage capability directly on the bus interface.

Replacement Considerations

Check for direct replacements such as the CY74FCT163543 without the suffix if packaging differences are acceptable. Consider the SN74LVC163543 for lower voltage compatibility, though pinouts may differ. Always validate electrical parameters and mechanical dimensions against the original specification sheet.