8409901RA

Overview

The Texas Instruments 8409901RA is an octal D-type flip-flop with clear, belonging to the HC/UH series. It features a positive edge-triggered true output and is housed in a 20-pin CDIP package. The device operates within a temperature range of -55°C to 125°C. It provides CMOS outputs with a maximum drive current of 5.2 mA for both low and high states.

Feature Summary

• Octal D-type flip-flop architecture with integrated clear function
• Positive edge-triggered operation ensuring precise data capture
• CMOS output structure supporting standard logic interfacing

Applications

• High-reliability military and aerospace digital systems
• Industrial control logic requiring wide temperature tolerance
• Data storage and bus interface circuits in harsh environments

Procurement Notes

Verify the specific suffix 'RA' against the manufacturer's official documentation to confirm the exact package variant and environmental rating. Ensure the procurement channel sources from authorized distributors to guarantee component authenticity and traceability for critical applications.

Selection Notes

Select this component when designing systems that require eight synchronized storage elements with a global reset capability. The HC/UH family compatibility ensures interoperability with other standard logic devices. Consider the CDIP package constraints for board layout and thermal management in enclosed spaces.

Part Context

This part is a commercial/military grade version of the SN54HC273 octal D-type flip-flop. It is part of Texas Instruments' broader HC/UH logic family, designed for high-speed operation and low power consumption. The 8409901RA designation specifically identifies the packaged unit suitable for ruggedized electronic assemblies.

Replacement Considerations

Direct substitutes include other SN54HC273 variants from Texas Instruments or equivalent octal D-type flip-flops from manufacturers like ON Semiconductor or NXP, provided they match the 20-CDIP package and extended temperature range requirements.