JM54ACT74SDA-RH

Overview

The JM54ACT74SDA-RH is a dual D-type flip-flop with separate data inputs, clock inputs, and reset inputs. It features complementary outputs (Q and Q-bar) for each flip-flop. The device operates within a supply voltage range of 4.5V to 5.5V. It includes buffered positive-edge-triggered clocks and active-low resets that asynchronously clear the Q output. The component is designed for military specifications and utilizes CMOS technology.

Feature Summary

• Dual independent D-type flip-flops with complementary outputs
• Active-low asynchronous reset capability
• Buffered positive-edge-triggered clock inputs
• Military-grade radiation hardening qualification

Applications

• Military aerospace digital logic systems
• Radiation-hardened data storage circuits
• High-reliability synchronous state machines
• Avionics control interface registers

Procurement Notes

Verify the specific suffix 'RH' indicates radiation hardness against standard commercial variants. Confirm the manufacturer origin as National Semiconductor or its successor entity Texas Instruments. Ensure the datasheet matches the MIL-PRF-38534 or equivalent military specification requirements for this part number.

Selection Notes

Select this component when dual flip-flops are required in high-radiation environments. Compare against standard 74ACT74 devices if radiation tolerance is not critical. Consider pinout compatibility with existing PCB layouts designed for SOIC-16 packages. Evaluate power consumption differences between ACT and other logic families.

Part Context

This part belongs to the 54ACT series, which denotes military-grade performance levels compared to the commercial 74ACT series. It serves as a fundamental building block for sequential logic in harsh environments. The device provides two isolated flip-flops within a single package, optimizing board space for complex digital designs.

Replacement Considerations

JM54ACT74SDA is a compatible alternative without the radiation suffix. Standard 74ACT74 devices serve as functional replacements for non-military applications.