CD74FCT16543ATSM

Overview

The CD74FCT16543ATSM is a non-inverting bus transceiver manufactured by Harris Corporation. It features two independent elements, each handling eight bits of data, resulting in a total 16-bit configuration. The device utilizes a 56-pin Thin Shrink Small Outline Package (TSSOP) with a width of 7.50 mm. It operates within a voltage range of 4.5V to 5.5V and supports an operating temperature range from -40°C to 85°C. The outputs are three-state capable, allowing for effective bus management in high-speed digital systems.

Feature Summary

• Non-inverting signal transmission across two independent eight-bit channels
• Three-state output capability for efficient bus line sharing
• Integrated bus hold inputs to eliminate the need for external pull-up resistors

Applications

• High-speed data bus architectures requiring non-inverted logic
• Memory interface circuits utilizing wide data paths
• Digital communication systems needing isolated bidirectional data transfer

Procurement Notes

Verify the specific manufacturer designation, as Harris Corporation assets were acquired by Renesas Electronics. Confirm that the component matches the original Harris specifications rather than subsequent generic equivalents. Ensure the package type corresponds to the 56-pin TSSOP variant. Check for RoHS compliance status if required by your assembly standards, as older Harris batches may differ from current production runs.

Selection Notes

Select this component when a non-inverting 16-bit transceiver is required for 5V CMOS logic applications. The dual eight-bit structure allows for flexible partitioning of data lines. Consider the thermal performance within the specified -40°C to 85°C range. The bus hold feature simplifies circuit design by removing external components typically needed for floating inputs during inactive states.

Part Context

This part belongs to the FCT series of high-speed CMOS logic devices produced by Harris Corporation. The series is characterized by fast propagation delays and compatibility with standard TTL and CMOS logic families. The CD74FCT16543ATSM specifically addresses the need for wide-data bus interfacing with non-inverting functionality, distinguishing it from inverted variants within the same product family.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify cross-reference availability through official Renesas or Harris distributors.