CD74FCT162244CTMT

Overview

The CD74FCT162244CTMT is a high-speed CMOS bus driver belonging to the FCT series. It features four functional blocks, each providing four bits of data transfer, resulting in a total configuration of sixteen bits. The device utilizes a true output polarity and operates within a standard industrial temperature range from -40 °C to +85 °C. It is housed in a 48-terminal Thin Shrink Small Outline (TSSOP) package with a .3-inch body width. Key electrical characteristics include a maximum low-level output current of 24 mA and a load capacitance specification of 50 pF. The control logic is activated by a low-enable signal.

Feature Summary

• Bus hold inputs are integrated to eliminate the need for external pull-up resistors on unused lines.
• Outputs provide three-state capability combined with internal series resistance for controlled signal integrity.
• CMOS construction ensures compatibility with standard logic families while maintaining low power consumption.

Applications

• High-speed data bus buffering in computer systems
• Clock drivers and buffer circuits
• Memory address and data bus drivers

Procurement Notes

Verify the manufacturer designation carefully, as Harris Corporation's semiconductor assets were acquired by Texas Instruments. Ensure the part number matches the specific TSSOP-48 package variant. Confirm RoHS compliance status if required for modern manufacturing standards, as older Harris batches may differ. Cross-reference the suffix CTMT to ensure correct tape-and-reel packaging and temperature grade specifications.

Selection Notes

Select this component when a non-inverting 16-bit bus driver is required for system architecture. The true output polarity makes it suitable for direct data path buffering without phase inversion. Consider the 24 mA drive strength for moderate capacitive loads up to 50 pF. The FCT series offers faster switching speeds compared to legacy LS or ALS logic families, making it appropriate for higher frequency digital interfaces.

Part Context

This device is part of the broader FCT (Fast CMOS Technology) family designed for high-performance digital applications. It serves as a direct upgrade path for older 74F or 74LS series circuits requiring increased speed and lower power. The 48-pin form factor allows for dense PCB layouts in complex multi-board systems where extensive bus routing is necessary.

Replacement Considerations

Texas Instruments equivalents such as the SN74FCT162244CT are functionally identical. Verify pinout compatibility before substitution. Other manufacturers like IDT offer similar FCT devices, but check specific timing parameters and voltage levels to ensure system stability.