74AC821SPC

Overview

The Fairchild Semiconductor 74AC821SPC is a 10-bit D-type flip-flop housed in a 24-pin DIP package. It features positive-edge triggering and true outputs with 3-state capability for bus-organized system applications. The device operates within a supply voltage range of 2V to 6V, supporting high-speed CMOS logic performance while maintaining low power dissipation.

Feature Summary

• Contains ten D-type flip-flops with positive-edge clock triggering
• Provides 3-state outputs suitable for direct bus connection
• Supports standard 5V CMOS logic levels

Applications

• Bus-oriented data storage systems
• Parallel-to-serial data conversion circuits
• High-speed digital signal processing interfaces

Procurement Notes

Verify the specific suffix 'SPC' against the manufacturer's current datasheet to confirm pinout compatibility and electrical characteristics. Ensure the component meets required operating temperature ranges and voltage specifications for the target application environment before integration.

Selection Notes

Select this component when a 10-bit parallel storage element with tri-state output control is required. It is appropriate for designs needing positive-edge triggered data latching with direct bus interfacing capabilities under standard 5V CMOS supply conditions.

Part Context

This part belongs to the 74AC series of advanced CMOS logic devices. It provides higher speed performance compared to standard 74HC equivalents while maintaining compatible pinouts and logical functionality for legacy system upgrades or new high-speed designs.

Replacement Considerations

The 74F821SPC is a documented substitute offering similar 10-bit D-type flip-flop functionality with 3-state outputs, though it utilizes faster F/FAST logic technology.