CD4081BCN Equivalent & Substitute Parts

Part Overview

The CD4081BCN is a 4-channel AND gate logic integrated circuit manufactured by onsemi, housed in a 14-pin DIP package. This device implements four independent 2-input AND gates on a single chip and operates across a wide supply voltage range of 3V to 15V. The CD4081BCN is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The CD4081BE from Texas Instruments serves as the direct functional equivalent with enhanced specifications and active product status.

Substiute Parts

CD4081BCN

onsemiIn Stock: 2160CD4081BCN Datasheet

Current PartRFQ

CD4081BE

Texas InstrumentsIn Stock: 1470CD4081BE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution between CD4081BCN and CD4081BE is based on the following criteria:

• Logic Function: Both devices implement identical 4-channel 2-input AND gate logic
• Pin Configuration: Both use 14-pin DIP packaging with identical pinout
• Electrical Characteristics: Quiescent current (1 µA max), output drive capability (3.4mA), and input logic levels are identical
• Operating Temperature Range: Both support -55°C to 125°C operation
• Supply Voltage Compatibility: CD4081BE supports 3V ~ 18V, which encompasses the CD4081BCN range of 3V ~ 15V
• Series Classification: Both belong to the 4000B CMOS logic series

The CD4081BE is a direct substitute with superior specifications and active manufacturing status, making it suitable for replacement in all applications where CD4081BCN was previously specified.

Parameter Comparison

Engineering Selection Recommendations

The CD4081BE is the appropriate substitute for CD4081BCN based on the following factors:

• Product Status: CD4081BE maintains active manufacturing status, ensuring long-term availability and supply chain continuity, whereas CD4081BCN is obsolete
• Regulatory Compliance: CD4081BE is ROHS3 compliant, meeting current environmental and regulatory requirements
• Electrical Compatibility: The CD4081BE supply voltage range (3V ~ 18V) fully encompasses the CD4081BCN specification (3V ~ 15V), ensuring drop-in compatibility in all existing applications
• Functional Equivalence: Identical logic function, pin configuration, and electrical characteristics enable direct substitution without circuit redesign
• Performance: While CD4081BE exhibits slightly higher propagation delay (90ns vs. 70ns at 15V, 50pF), this remains within acceptable parameters for standard logic applications

Frequently Asked Questions (FAQ)

Q: Can CD4081BE directly replace CD4081BCN without PCB modifications?

A: Yes. Both devices use identical 14-pin DIP packaging with matching pinout. No PCB layout changes are required for direct substitution.

Q: Are there supply voltage compatibility concerns?

A: No. CD4081BE operates across 3V ~ 18V, which fully encompasses the CD4081BCN range of 3V ~ 15V. All existing supply voltage configurations remain valid.

Q: What is the impact of the propagation delay difference?

A: CD4081BE exhibits 90ns propagation delay compared to CD4081BCN at 70ns (both at 15V, 50pF load). For standard logic applications, this 20ns difference is not functionally significant. Applications with critical timing requirements should evaluate specific circuit performance.

Q: Is CD4081BE suitable for new designs?

A: Yes. CD4081BE is actively manufactured and ROHS3 compliant, making it the appropriate choice for new product development and long-term production.

Q: What packaging options are available?

A: CD4081BCN is supplied in DIP format. CD4081BE is available in Tube packaging. Both maintain the 14-DIP (0.300", 7.62mm) physical form factor.

Q: Are there any regulatory or compliance differences?

A: CD4081BE is ROHS3 compliant. Both devices maintain REACH Unaffected status. CD4081BE meets current environmental regulations, making it preferable for applications subject to regulatory compliance requirements.