CD4027BPW Equivalent & Substitute Parts

Part Overview

The CD4027BPW 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 CD4027BPW is currently in Last Time Buy status, indicating limited availability. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for applications currently using this component.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Base Product Number	CD4027
Series	4000B
Type	JK Type Flip-Flop
Number of Elements	2
Number of Bits per Element	1
Output Type	Complementary
Trigger Type	Positive Edge
Clock Frequency	24 MHz
Max Propagation Delay @ 15V, 50pF	90 ns
Voltage Supply Range	3V to 18V
Current - Output High/Low	6.8 mA / 6.8 mA
Quiescent Current (Iq)	4 µA
Input Capacitance	5 pF
Operating Temperature Range	-55°C to 125°C
Package Type	16-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CD4027BPW is determined by strict equivalence across all functional and electrical parameters. The primary substitute identified is the CD4027BPWR, which maintains identical electrical specifications, logic function, and performance characteristics. The substitution is valid based on the following criteria:

Critical Parameters for Substitution:

Identical base product number (CD4027)
Same series designation (4000B)
Matching flip-flop configuration (dual JK-type, 1-bit per element)
Identical output type (complementary)
Matching trigger mechanism (positive edge)
Equivalent electrical performance (24 MHz clock frequency, 90 ns propagation delay)
Identical supply voltage range (3V to 18V)
Same package footprint (16-TSSOP)
Matching compliance certifications (ROHS3, REACH Unaffected)

The only difference between CD4027BPW and CD4027BPWR is the packaging format: tube versus tape & reel. This distinction affects only procurement and handling, not electrical or functional performance.

Parameter Comparison

Parameter	CD4027BPW	CD4027BPWR
Manufacturer	Texas Instruments	Texas Instruments
Base Product Number	CD4027	CD4027
Series	4000B	4000B
Type	JK Type Flip-Flop	JK Type Flip-Flop
Number of Elements	2	2
Number of Bits per Element	1	1
Output Type	Complementary	Complementary
Trigger Type	Positive Edge	Positive Edge
Clock Frequency	24 MHz	24 MHz
Max Propagation Delay @ 15V, 50pF	90 ns	90 ns
Voltage Supply Range	3V to 18V	3V to 18V
Current - Output High/Low	6.8 mA / 6.8 mA	6.8 mA / 6.8 mA
Quiescent Current (Iq)	4 µA	4 µA
Input Capacitance	5 pF	5 pF
Operating Temperature Range	-55°C to 125°C	-55°C to 125°C
Package Type	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
Packaging Format	Tube	Tape & Reel (TR)
Product Status	Last Time Buy	Active

Engineering Selection Recommendations

The CD4027BPWR is a direct functional equivalent to the CD4027BPW. Both devices are manufactured by Texas Instruments and share identical electrical specifications, logic performance, and package footprint. The CD4027BPWR maintains active product status, whereas the CD4027BPW is designated Last Time Buy, making the BPWR variant the preferred selection for new designs and ongoing production requirements.

Both parts maintain full compliance with ROHS3 and REACH regulations, ensuring regulatory continuity. The moisture sensitivity level of 1 (Unlimited) applies to both variants, indicating no special handling requirements during storage or assembly.

The selection between these two parts should be based on procurement requirements: CD4027BPW in tube packaging for lower-volume applications, and CD4027BPWR in tape & reel format for automated assembly and higher-volume production environments.

Frequently Asked Questions (FAQ)

Q: Can CD4027BPWR be used as a direct replacement for CD4027BPW in existing designs?

A: Yes. Both parts are electrically and functionally identical. The only difference is packaging format (tube versus tape & reel). No circuit modifications or re-qualification are required.

Q: What is the significance of the Last Time Buy status for CD4027BPW?

A: Last Time Buy indicates that Texas Instruments will discontinue production of this part number. Existing inventory will be sold until depletion, after which the part will no longer be available. Migration to CD4027BPWR is recommended for supply chain continuity.

Q: Are there any performance differences between tube and tape & reel packaging?

A: No. Packaging format affects only handling, storage, and automated assembly compatibility. Electrical performance and reliability are identical.

Q: Do both parts require the same PCB footprint?

A: Yes. Both CD4027BPW and CD4027BPWR use the 16-TSSOP package with identical pin configuration and footprint dimensions (0.173", 4.40mm Width).

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both parts operate across the identical temperature range of -55°C to 125°C.

Q: What compliance certifications apply to both parts?

A: Both CD4027BPW and CD4027BPWR are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

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