CD74FCT2541ATQM

Overview

The CD74FCT2541ATQM is an octal line driver and MOS driver manufactured by Harris Corporation, belonging to the FCT logic series. It features non-inverting polarity with three-state outputs housed in a 20-SSOP package. The device operates within a supply voltage range of 4.75 V to 5.25 V, drawing a typical operating current of 3.3 mA and exhibiting a static current of 200 nA. It provides high-level output current of -15 mA and low-level output current of 12 mA. The propagation delay is specified at 8 ns at 5 V, with an operating temperature range from -40°C to +85°C.

Feature Summary

• Octal configuration providing eight independent non-inverting input-to-output channels for parallel data transmission.
• Three-state output capability allowing multiple drivers to share bus lines without electrical contention.
• CMOS construction within the Fast CMOS (FCT) series ensuring compatibility with standard logic interfaces.

Applications

• High-speed data bus buffering in computer systems
• Driving capacitive loads on memory buses
• Point-to-point or multi-drop communication links

Procurement Notes

Verify the manufacturer designation as Harris Corporation, noting that Texas Instruments also produces the CY74FCT2541 variant. Confirm the specific suffix ATQM corresponds to the 20-SSOP package type. Ensure compliance with RoHS requirements if applicable to the specific production batch, as older Harris components may have different environmental certifications compared to modern TI equivalents.

Selection Notes

Select this component when an octal buffer with three-state control is required for 5V CMOS applications. The FCT series offers faster switching speeds than standard HC/HCT logic while maintaining CMOS power characteristics. Verify that the 20-SSOP package dimensions fit the PCB footprint and that the 8 ns propagation delay meets the system timing constraints.

Part Context

This part belongs to the 74FCT family of high-speed CMOS logic devices originally developed by Harris Semiconductor before its acquisition by Texas Instruments. The CD74 prefix indicates commercial grade temperature range and standard packaging. The FCT technology bridges the performance gap between TTL speed and CMOS power efficiency, making it suitable for legacy and mixed-voltage system designs requiring robust signal integrity.

Replacement Considerations

The CY74FCT2541TQCTE4 from Texas Instruments serves as a direct functional replacement, offering identical logical operations and pinout compatibility. Users should verify package variations, such as TQSOP versus SSOP, and confirm that the specific TI revision maintains the same electrical parameters and thermal characteristics.