CD74FCT163244MT

Overview

The CD74FCT163244MT is a CMOS bus driver from the FCT series, manufactured by Harris. It features four functional units, each handling four bits of data with true output polarity. The device utilizes a 48-pin PDSO package and operates within a supply voltage range of 4.5 V to 5.5 V, with a nominal rating of 5 V. It supports an operating temperature range from -40 °C to 85 °C. Key electrical characteristics include a propagation delay of 4.1 ns and a load capacitance specification of 50 pF.

Feature Summary

• Provides high-capacitance driving capability suitable for demanding loads
• Features low-impedance backplane interface design
• Incorporates three-state outputs for effective bus isolation

Applications

• High-capacitance load driving in digital systems
• Low-impedance backplane interconnects
• General-purpose bus buffering applications

Procurement Notes

Verify the manufacturer origin carefully, as Harris Semiconductor assets were acquired by Texas Instruments. Confirm that the specific part number corresponds to the original Harris production run rather than subsequent TI manufacturing. Ensure the component matches the specified 48-pin PDSO physical form factor and FCT logic family characteristics during inspection.

Selection Notes

Select this component when a four-channel, four-bit buffer with true output polarity is required. It is appropriate for designs needing 3-state control and operation at standard 5 V logic levels. Consider the 4.1 ns propagation delay and 50 pF load capability against system timing requirements.

Part Context

This device belongs to the Harris FCT (Fast CMOS) logic family, designed for high-speed digital applications. It serves as a buffer or line driver within this series, distinct from transceivers or latches. The FCT line was engineered to offer performance comparable to older TTL technologies while utilizing modern CMOS power efficiency.