CD74FCT162646ATMT

Overview

The CD74FCT162646ATMT is a registered bus transceiver from the FCT series, manufactured by Harris Corporation. It features two independent 8-bit functions with true outputs and bidirectional data flow. The device utilizes CMOS technology and operates within a voltage range of 5 V. It is housed in a 56-pin TSSOP plastic package. Key electrical characteristics include a maximum output current of 0.024 A and a propagation delay of 9 ns at nominal supply. The component supports an operating temperature range from -40 °C to 85 °C and provides three-state outputs.

Feature Summary

• Registered bus transceiver architecture with dual 8-bit channels
• Independent control for bidirectional data transfer
• Three-state outputs with series resistors
• CMOS construction compatible with FCT/PCT standards

Applications

• High-speed data bus interfaces
• Memory-to-peripheral communication links
• System-level data routing networks

Procurement Notes

Verify the specific suffix 'A' against official Harris or Renesas documentation to confirm pinout or electrical variations compared to the standard CD74FCT162646TMT. Ensure compliance requirements are met as the component is marked non-RoHS. Confirm package dimensions match the TSSOP56 specification before integration.

Selection Notes

Select this component when designing systems requiring registered buffering for high-speed bidirectional buses. The dual 8-bit configuration reduces board space compared to single-channel alternatives. Verify that the 5V logic level compatibility matches the system's power domain and that the TSSOP56 footprint is available on the target PCB layout.

Part Context

This part belongs to the Harris FCT (Fast CMOS) family, which bridges the performance gap between standard TTL and CMOS technologies. The manufacturer, originally Harris Semiconductor, has its logic product lines transferred to Renesas Electronics. This specific model represents a legacy industrial-grade component designed for robust digital signal integrity in complex electronic assemblies.

Replacement Considerations

The CD74FCT162646TMT serves as a direct functional equivalent. Check datasheets for minor parameter deviations such as propagation delay tolerances. Ensure substitute packages maintain the same 56-pin TSSOP form factor.