CD4027BF Equivalent & Substitute Parts

Part Overview

The CD4027BF is a dual JK-type flip-flop logic integrated circuit manufactured by Texas Instruments, part of the 4000B CMOS logic series. This device provides two independent 1-bit JK flip-flops with complementary outputs, designed for digital logic applications requiring edge-triggered state control. The CD4027BF is currently in active production status with 1215 units in stock. Substitute parts are identified when equivalent electrical performance and functional characteristics are required but alternative packaging or sourcing options are necessary.

Substiute Parts

CD4027BF

Texas InstrumentsIn Stock: 1287CD4027BF Datasheet

Current PartRFQ

CD4027BE

Texas InstrumentsIn Stock: 2428CD4027BE Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD4027BF is determined by strict equivalence in the following electrical and functional parameters:

• Logic Function: Dual JK-type flip-flop with 2 elements, 1 bit per element
• Output Configuration: Complementary outputs
• Trigger Mechanism: Positive edge-triggered
• Clock Frequency: 24 MHz maximum
• Propagation Delay: 90 ns @ 15V, 50pF load
• Supply Voltage Range: 3V to 18V
• Output Current Capability: 6.8 mA high and low
• Operating Temperature: -55°C to 125°C
• Series: 4000B CMOS logic family
• Mounting Type: Through-hole

The CD4027BE qualifies as a direct substitute based on identical electrical specifications and functional performance. The primary difference is packaging format: CD4027BF uses 16-CDIP (ceramic DIP) while CD4027BE uses 16-PDIP (plastic DIP). Both packages maintain the same 0.300" (7.62mm) pitch and pin configuration, enabling direct board-level substitution.

Parameter Comparison

Engineering Selection Recommendations

CD4027BF Selection Criteria:

• Ceramic DIP packaging required for enhanced reliability in high-temperature or harsh environments
• Applications requiring hermetic sealing or superior moisture resistance
• Legacy system compatibility where ceramic packages are specified
• Current production status: Active with 1215 units available

CD4027BE Selection Criteria:

• Plastic DIP packaging acceptable for standard industrial and commercial applications
• Lower quiescent current (4 µA vs. 20 µA) beneficial for battery-powered or low-power designs
• Cost optimization where ceramic packaging is not mandated
• Current production status: Active with 2326 units available
• REACH compliance status documented as unaffected

Both parts maintain identical electrical performance, functional behavior, and compliance certifications (ROHS3, EAR99 export classification). Selection between CD4027BF and CD4027BE depends on packaging material requirements and power consumption constraints rather than functional equivalence.

Frequently Asked Questions (FAQ)

Q: Can CD4027BE replace CD4027BF in existing designs? A: Yes. Both parts are electrically and functionally identical. The primary difference is packaging material (ceramic vs. plastic). Pin configuration, pitch (0.300"), and all electrical parameters are equivalent. Board-level substitution is direct.

Q: What is the difference between 16-CDIP and 16-PDIP packaging? A: CDIP denotes ceramic dual inline package; PDIP denotes plastic dual inline package. Both maintain identical pin count (16), pitch (0.300" / 7.62mm), and through-hole mounting. Ceramic packages offer superior hermeticity and thermal stability; plastic packages are standard for most commercial applications.

Q: Does the quiescent current difference affect substitution compatibility? A: The CD4027BE exhibits lower quiescent current (4 µA) compared to CD4027BF (20 µA). This difference does not prevent substitution but indicates improved power efficiency in the plastic package variant. Applications with strict power budgets may benefit from CD4027BE selection.

Q: Are both parts RoHS compliant? A: Yes. Both CD4027BF and CD4027BE are ROHS3 compliant. CD4027BE additionally carries REACH unaffected status documentation.

Q: What is the base product number for these parts? A: The base product number is CD4027, with BF and BE designating package variants within the 4000B CMOS logic series.

Q: Can these parts be used interchangeably on PCBs designed for either package? A: Yes, provided the PCB footprint accommodates 16-pin through-hole DIP packages with 0.300" pitch. Both CDIP and PDIP packages share identical pin spacing and mounting hole patterns.