CD74AC74EX

Overview

The CD74AC74EX is a dual D-type flip-flop manufactured by Harris Corporation. It features two independent positive-edge-triggered D-type flip-flops in a single package. The device operates within a supply voltage range of 2.0V to 6.0V and supports clock frequencies up to 110 MHz. It utilizes CMOS technology for low power consumption and high noise immunity. The component is housed in a 14-pin Dual In-Line Package (DIP) with a standard 0.300-inch width, suitable for through-hole mounting on printed circuit boards.

Feature Summary

• Dual independent D-type flip-flop configuration
• Positive-edge triggering mechanism
• CMOS technology for low power operation
• High-speed performance capability

Applications

• Embedded control systems
• Data storage registers
• Shift register circuits
• Timing and sequencing logic

Procurement Notes

Verify the manufacturer designation as Harris Corporation, noting that Texas Instruments also produces compatible parts under similar numbering conventions. Confirm the package type is 14-DIP and check for RoHS compliance status if required by specific project regulations. Ensure the operating temperature range meets environmental requirements before finalizing procurement decisions.

Selection Notes

Select this component when a dual D-type flip-flop solution is required for digital logic applications. Consider the 110 MHz maximum clock frequency for high-speed timing needs. The 14-DIP package is appropriate for prototyping or legacy board designs requiring through-hole assembly. Verify voltage compatibility with the system's 2.0V to 6.0V supply rails.

Part Context

This part belongs to the 74AC series of logic integrated circuits, known for advanced CMOS technology offering higher speeds than standard 74LS equivalents while maintaining lower power consumption. The CD74 prefix indicates commercial temperature range availability, though specifications extend to -55°C. Harris Corporation was a significant producer of these logic components before industry consolidations.

Replacement Considerations

Compatible substitutes include the SN74AC74 from Texas Instruments, which shares identical logical functionality and pinout. Other AC-series dual D-type flip-flops may be interchangeable if voltage and speed specifications align. Verify package dimensions and electrical characteristics match before substitution.