QS74FCT821CTQ

Flip Flops Overview

The QS74FCT821CTQ is a 10-bit bus driver from the FCT series, manufactured by Quality Semiconductor. It features true output polarity and operates with a nominal supply voltage of 5 V. The device utilizes CMOS technology and provides three-state outputs. It is housed in a 24-pin plastic small outline package (PDSO24). Key electrical parameters include a maximum operating frequency of 83.3 MHz at nominal supply, a load capacitance of 50 pF, and a maximum output current of 48 mA. The component supports an operating temperature range from -40 °C to 85 °C.

Flip Flops Feature Summary

• Provides 10-bit data buffering with true output polarity for signal integrity.
• Features three-state outputs to facilitate bus line sharing and system flexibility.
• Incorporates power-off disable functionality to prevent loading on inactive buses.

Flip Flops Applications

• High-speed data bus driving in computer systems
• Memory interface buffering
• General-purpose digital signal routing

Flip Flops Procurement Notes

Verify the specific manufacturer designation and datasheet version upon procurement. Confirm that the package pinout matches the PDSO24 specification. Ensure the component meets the required thermal operating range of -40 °C to 85 °C for the intended application environment. Cross-reference the part number with official distributor catalogs to confirm availability and authenticity.

Flip Flops Selection Notes

Select this component when a 10-bit wide bus driver with high-speed performance is required. The 83.3 MHz frequency capability suits applications needing fast data transfer rates. The 5 V CMOS logic level compatibility ensures integration with standard digital circuits. Consider the 24-pin surface mount package for PCB space constraints compared to through-hole alternatives.

Flip Flops Part Context

This part belongs to the FCT (Fast CMOS) logic family, designed for high-speed operation with CMOS power consumption. It serves as a buffer or line driver within digital logic circuits. The 10-bit configuration allows for parallel data transmission, making it suitable for wide data paths in microprocessor and memory systems.

Flip Flops Replacement Considerations

Compatible replacements include PI74FCT821CTR and IDT74FCT821DTL. Verify package compatibility and pin alignment before substitution. Ensure replacement parts meet the same electrical specifications and operating temperature ranges.