CD74FCT162244ETSM

Overview

The CD74FCT162244ETSM is a high-speed CMOS bus driver belonging to the FCT series, manufactured by Harris Corporation. It features four functional units, each handling four bits of data, resulting in an 8-bit bidirectional configuration across two ports. The device utilizes a 48-pin TSSOP plastic package and operates with true output polarity. Key electrical characteristics include a maximum low-level output current of 0.024 A and a load capacitance rating of 50 pF. It supports an operating temperature range from -40 °C to 85 °C and functions with a 5 V supply voltage.

Feature Summary

• Bus hold inputs are integrated to eliminate the requirement for external pull-up resistors on unused lines.
• Outputs provide three-state capability combined with internal series resistors for signal integrity management.
• Control logic utilizes a low-active enable signal to manage data transmission direction.

Applications

• High-speed parallel data bus buffering in computer systems
• Clock distribution networks requiring precise timing control
• Memory module interface drivers

Procurement Notes

Verify the specific suffix 'ETSM' against manufacturer documentation to confirm pinout compatibility and thermal specifications. Ensure the component meets required environmental standards for the intended operating temperature range. Cross-reference the RoHS status, as indicated by available data for similar Harris FCT parts, to determine compliance with current regulatory requirements before procurement.

Selection Notes

Select this component when designing systems that require robust bus holding capabilities without external passive components. The inclusion of series resistors makes it suitable for applications demanding controlled slew rates. Verify that the 48-pin TSSOP footprint aligns with the PCB layout constraints and that the 5V logic levels match the system's voltage domain.

Part Context

This part belongs to the Harris FCT (Fast CMOS) family, designed for high-performance digital applications. It serves as a direct replacement or upgrade for older LS-TTL equivalents, offering faster switching speeds and lower power consumption. The 162244 designation specifically identifies it as a quad 4-bit bus driver within the broader portfolio of Harris logic products.

Replacement Considerations

Compatible substitutes include the IDT 74FCT162244ATPF and Renesas CD74FCT162244ATSM. These alternatives share identical logical functions and pin configurations but may differ in packaging details such as SSOP versus TSSOP. Verify electrical parameters like propagation delay and output drive strength when substituting.