CD4027BCN

Overview

The CD4027BCN is a dual J-K flip-flop from the Fairchild Semiconductor 4000/14000/40000 series. It is a monolithic complementary MOS (CMOS) integrated circuit constructed with N- and P-channel enhancement mode transistors. The device features two independent flip-flops, each with separate J, K, set, reset, and clock inputs, providing buffered Q and Q outputs. It operates within a supply voltage range of 3 V to 15 V and supports a maximum frequency of 2.5 MHz at nominal supply. The component is housed in a 16-pin SOIC package and functions reliably across an extended temperature range from -55 °C to +125 °C.

Feature Summary

• Dual independent J-K master/slave flip-flops with dedicated set and reset controls
• Positive edge-triggered operation with buffered complementary outputs
• Monolithic CMOS construction ensuring low power consumption

Applications

• Data storage and register applications
• Frequency division circuits
• Shift register configurations

Procurement Notes

Verify that the specific part number matches the required package type and manufacturer specifications. Confirm compliance requirements such as RoHS status against project constraints. Ensure the supplier provides documentation confirming the component's origin and authenticity. Cross-reference the datasheet revision date to ensure compatibility with design requirements. Validate that the operating temperature range meets the environmental conditions of the intended application.

Selection Notes

Select this component for designs requiring dual J-K flip-flops with independent control inputs. Consider the wide supply voltage range suitable for various logic families. Evaluate the package size for PCB layout constraints. Verify that the operating frequency limits align with the system clock speed. Assess thermal performance requirements against the specified temperature range.

Part Context

This component belongs to the standard 4000 series of CMOS logic devices, widely used in general-purpose digital electronics. The CD4027 variant specifically provides dual flip-flop functionality, distinguishing it from single flip-flop or multi-gate logic ICs. It serves as a fundamental building block for sequential logic circuits, offering reliable state retention and controlled data transfer capabilities in digital systems.

Replacement Considerations

Equivalent parts include the MC14027B and HEF4027B. These alternatives offer similar dual J-K flip-flop functionality within the 4000 series family. Verify pinout compatibility and electrical characteristics before substitution.