JD54F74SCA

Overview

The JD54F74SCA is a dual D-type positive edge-triggered flip-flop manufactured by National Semiconductor under the 54F/74F series. It features direct clear and set inputs with complementary Q and Q outputs. The device operates within a supply voltage range of 4.5V to 5.5V, typically rated at 5V. It supports an operating temperature range of -55°C to 125°C. The component utilizes a 14-lead ceramic dual-in-line package (CDIP) with a 0.300-inch width, designed for high-speed asynchronous data communications.

Feature Summary

• Dual D-type positive edge-triggered flip-flop configuration
• Direct clear and set inputs for immediate state control
• Complementary Q and Q outputs available
• Military-grade environmental and burn-in processing

Applications

• Asynchronous data communications systems
• High-speed digital logic circuits
• Military and aerospace electronic equipment
• Data storage and transfer registers

Procurement Notes

Verify the specific suffix 'SCA' against official National Semiconductor documentation to confirm the exact package variant and manufacturing lot specifications. Ensure that the military grade requirements align with the environmental and burn-in processing standards defined in the datasheet. Cross-reference the part number with authorized distributors to confirm authenticity and compliance with RoHS regulations where applicable.

Selection Notes

Select this component when a dual D-type flip-flop with direct clear and set capabilities is required for high-speed applications. The 54F series offers faster performance compared to standard TTL logic. Consider the 14-lead CDIP package for through-hole mounting in rugged environments. Verify that the operating temperature range meets the specific environmental conditions of the target application.

Part Context

The JD54F74SCA belongs to the 54F/74F family of fast logic devices produced by National Semiconductor. This series is characterized by high-speed operation and compatibility with standard TTL logic levels. The 54F designation indicates military-grade quality, while the 74F series represents commercial grade equivalents. The device is part of a broader portfolio of logic gates and flip-flops designed for complex digital systems.

Replacement Considerations

Equivalent parts include the 54F74 and 74F74 from National Semiconductor. Other manufacturers may offer compatible dual D-type flip-flops with similar pinouts and electrical characteristics. Verify pin compatibility and logical function before substitution. Ensure that the replacement device meets the same voltage and temperature specifications.