CD40174BE

Overview

The CD40174BE is a hex D-type flip-flop belonging to the Harris Corporation 4000B series of CMOS logic devices. It features six independent D-type flip-flops with positive-edge triggering and active-low asynchronous clear inputs. The component operates within a supply voltage range of 3V to 18V and supports data rates up to 6 MHz at 15V. It is housed in a 16-pin ceramic dual in-line package (CDIP) designed for through-hole mounting, ensuring reliable performance across an industrial temperature range of -55°C to +125°C.

Feature Summary

• Hex configuration providing six independent D-type flip-flops per package
• Positive-edge clock triggering mechanism for precise data capture
• Active-low asynchronous clear input for immediate state reset
• Hermetic ceramic packaging suitable for harsh environmental conditions

Applications

• High-reliability digital storage circuits
• Shift register implementations
• State machine control logic
• Data acquisition systems requiring radiation hardness

Procurement Notes

Verify that the received component matches the specific Harris Corporation manufacturing origin and ceramic package style. Confirm the presence of active-low clear functionality and positive-edge triggering characteristics as documented in official datasheets. Ensure compatibility with high-voltage CMOS logic levels before integration into existing circuit designs.

Selection Notes

Select this component when a hermetically sealed, radiation-hardened hex D-flip-flop is required for space or military applications. It is appropriate for designs needing synchronous data storage with asynchronous reset capabilities. Consider its wide operating voltage range and robust thermal stability for environments where standard plastic-packaged logic devices may fail.

Part Context

This device is part of the legacy Harris 4000B series, which offers enhanced noise immunity and radiation tolerance compared to standard commercial CMOS logic. The CD40174BE specifically provides a complete set of six D-type flip-flops, making it a compact solution for complex sequential logic requirements in critical systems.

Replacement Considerations

Equivalent parts include the HCC40174B from other manufacturers offering similar ESCC qualification and radiation hardness specifications. Verify pinout compatibility and electrical parameter alignment before substitution.