CD40174BFX

Overview

The CD40174BFX is a CMOS hex D-type flip-flop from the 4000B series, manufactured by Harris Corporation. It features six independent D-type flip-flops with positive-edge triggering and an active-low asynchronous clear input. The device operates within a supply voltage range of 3 V to 18 V and supports data rates up to 25 MHz at 10 V. It includes a propagation delay of 300 ns and offers push-pull outputs capable of driving 1.5 mA loads. The component is housed in a 16-lead ceramic dual in-line package (CDIP) and functions reliably across an extended temperature range of -55°C to +125°C.

Feature Summary

• Contains six independent D-type flip-flops with positive-edge clock triggering
• Features an active-low asynchronous clear input for immediate reset
• Provides push-pull outputs suitable for direct interface with TTL or CMOS loads
• Operates over a wide supply voltage range from 3 V to 18 V

Applications

• High-speed shift register applications requiring serial-to-parallel conversion
• Decoding and counting circuits utilizing the parallel output capability
• Data storage modules in industrial control systems operating in extreme temperatures
• Timing and sequence control logic in aerospace instrumentation

Procurement Notes

Verify that the specific part number matches the Harris Corporation manufacturing origin, as this component may be sourced through authorized distributors or surplus channels. Confirm the package type is the ceramic dual in-line (CDIP) variant rather than plastic equivalents. Ensure compliance with radiation hardening requirements if applicable, as some variants in this series are specified for such environments. Check RoHS status documentation carefully, as older Harris components may not meet current environmental directives.

Selection Notes

Select the CD40174BFX when a high-density hex D-type flip-flop solution is required with wide voltage tolerance. This component is appropriate for designs needing push-pull outputs to drive moderate loads without additional buffering. Consider this part for applications demanding operation at elevated temperatures up to 125°C. Evaluate the need for an asynchronous clear function to manage system reset states efficiently during power-up or fault conditions.

Part Context

The CD40174BFX belongs to the 4000B series of CMOS logic devices produced by Harris Corporation. This series is characterized by robust performance and wide operating voltage ranges compared to standard 4000B counterparts. The device serves as a fundamental building block for sequential logic circuits. It complements other Harris logic families like the CD4017 ring counter and CD4021 shift register within complex digital systems.

Replacement Considerations

The CD40174BMJ is a documented substitute part number offering similar functionality. Verify pin compatibility and package dimensions before substitution. Ensure the replacement source meets the same radiation hardening and temperature specifications if required by the application.