IDT74FCT244TQ

Overview

IDT74FCT244TQ is a Fast CMOS octal buffer and line driver belonging to the 74FCT logic series. It features two functional units, each handling four bits of data with true output polarity. The device utilizes a 20-pin plastic small outline package (SOP) for surface mount installation. It operates within a supply voltage range of 2.7V to 5.5V and supports TTL input and output levels. Key electrical characteristics include a maximum low-level output current of 64mA and a typical propagation delay of 5ns at 50pF load. The component is rated for an operating temperature range from -40°C to +85°C.

Feature Summary

• Octal buffering capability provided by two independent 4-bit drivers
• Fast CMOS technology ensures high-speed operation with low power consumption
• TTL-compatible input and output voltage levels facilitate system integration
• Three-state outputs allow connection to bus structures

Applications

• High-speed data bus buffering in computer systems
• Clock distribution networks requiring low skew
• Memory module interface circuits
• General-purpose digital signal routing

Procurement Notes

Verify the specific suffix 'TQ' against official IDT documentation to confirm the exact package variant and tape-and-reel specifications. Ensure the ordered part matches the required SOP-20 footprint and pinout configuration. Cross-reference the manufacturer's latest datasheet for any updates on lead-free compliance or RoHS status associated with this specific ordering code.

Selection Notes

Select this component when an octal buffer with TTL compatibility and moderate drive strength is required. The 74FCT series offers a balance between speed and power dissipation suitable for commercial applications. Consider the 2.7V to 5.5V operating range for flexibility in 3.3V and 5V systems. Verify that the 64mA sink current meets the load requirements of the destination circuitry.

Part Context

The IDT74FCT244TQ belongs to the broader 74FCT family of high-speed CMOS logic devices manufactured by Integrated Device Technology. This family serves as a performance upgrade over standard 74F logic, offering faster switching speeds while maintaining lower power consumption. The 244 designation specifically indicates an octal buffer/line driver configuration, distinguishing it from other functions like inverters or transceivers within the same logical family.

Replacement Considerations

Compatible substitutes include PI74FCT244TSE from Diodes Incorporated and QS74FCT244TSOX from IDT/Renesas. These parts share similar octal buffer functionality and SOP-20 packaging. Verify pin compatibility and electrical parameters such as propagation delay and output drive current before substitution.