CD54ACT112F3A

Overview

The CD54ACT112F3A is a dual negative-edge triggered J-K flip-flop with set and reset functions, manufactured by Texas Instruments. It operates within an extended temperature range of -55°C to 125°C. The device features TTL input types and CMOS output types, supporting maximum output drive currents of 24 mA for both sourcing (IOH) and sinking (IOL). It is housed in a 16-pin Ceramic Dual In-Line Package (CDIP), designated as package group CDIP, ensuring robust performance in demanding environments.

Feature Summary

• Dual negative-edge triggered J-K flip-flops with integrated set and reset capabilities
• Extended operating temperature range suitable for high-temperature applications
• TTL-compatible inputs with CMOS outputs for versatile interface integration

Applications

• High-temperature digital logic circuits
• Military and aerospace data storage systems
• Industrial control system state machines

Procurement Notes

Verify the specific ordering suffix F3A against official Texas Instruments documentation to confirm the exact package variant and environmental rating. Ensure that the required CDIP package type aligns with your PCB footprint design guidelines. Cross-reference the active lifecycle status with current production schedules to avoid obsolescence risks during long-term deployment phases.

Selection Notes

Select this component when dual independent J-K flip-flops are required in harsh thermal environments exceeding standard commercial limits. The CDIP package offers superior hermetic sealing compared to plastic alternatives, making it ideal for radiation or moisture-sensitive applications. Confirm that the TTL input thresholds match your system's logic levels before finalizing the design.

Part Context

This part belongs to the CD54ACT series, which represents military-grade variants of the standard 74ACT logic family. The '54' prefix indicates space-qualified or military reliability standards, while 'ACT' denotes advanced CMOS technology. This specific model provides two independent flip-flops in a single ceramic package, differing from lower-grade plastic packages found in commercial counterparts.

Replacement Considerations

Direct substitutes include other CD54ACT112 variants with different package options such as CDIP or SOIC, provided the pinout remains identical. Verify that any replacement maintains the same -55°C to 125°C temperature rating and TTL input compatibility to ensure functional equivalence in existing designs.