CD4020BCM Binary Counter 14-Bit Equivalent & Substitute Parts

Part Overview

The CD4020BCM is a 14-bit binary counter IC manufactured by onsemi in the 4000B logic series. This component functions as a negative-edge-triggered counter with asynchronous reset, designed for frequency division and counting applications across industrial and consumer electronics. The CD4020BCM is classified as obsolete, making equivalent and substitute parts necessary for ongoing production, maintenance, and new design implementations. Active alternatives from multiple manufacturers provide direct functional replacement while maintaining compatibility with existing circuit designs.

Substiute Parts

CD4020BCM

onsemiIn Stock: 966CD4020BCM Datasheet

Current PartRFQ

MC14020BDR2G

onsemiIn Stock: 1858MC14020BDR2G Datasheet

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NLV14020BDR2G

onsemiIn Stock: 823NLV14020BDR2G Datasheet

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CD4020BNS

Texas InstrumentsIn Stock: 3275CD4020BNS Datasheet

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CD4020BNSR

Texas InstrumentsIn Stock: 4886CD4020BNSR Datasheet

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HEF4020BT,653

Nexperia USA Inc.In Stock: 1595HEF4020BT,653 Datasheet

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CD4060BM

Texas InstrumentsIn Stock: 1615CD4060BM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD4020BCM is determined by strict equivalence across the following critical parameters:

Core Functional Parameters:

• Logic Type: Binary Counter
• Number of Bits per Element: 14 Bit
• Direction: Up
• Reset Type: Asynchronous
• Trigger Type: Negative Edge
• Number of Elements: 1

Electrical Parameters:

• Voltage Supply Range (minimum overlap required)
• Operating Temperature Range (minimum overlap required)
• Count Rate (application-dependent; higher rates provide backward compatibility)

Physical Parameters:

• Package / Case: 16-SOIC form factor
• Mounting Type: Surface Mount
• Supplier Device Package compatibility

Substitute parts are grouped into two categories: Direct Equivalents (identical or superior electrical specifications with active product status) and Parametric Equivalents (functionally identical but with different base product numbers).

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs):

MC14020BDR2G and NLV14020BDR2G are active onsemi products maintaining the same manufacturer lineage as the CD4020BCM. Both parts are ROHS3 compliant and support the extended voltage range of 3 V ~ 18 V. The 8 MHz count rate is lower than the original 12 MHz specification but remains suitable for applications not requiring higher frequency operation. These parts are available in tape and reel packaging with unlimited moisture sensitivity level.

CD4020BNSR is an active Texas Instruments product with superior count rate performance at 24 MHz, providing headroom for timing-critical applications. This part maintains the full operating temperature range of -55°C ~ 125°C and is ROHS3 compliant. The package width differs slightly (0.209" versus 0.154"), requiring PCB layout verification before implementation.

Secondary Substitutes (Conditional Use):

CD4020BNS is a Texas Instruments part with Last Time Buy status, indicating limited future availability. While it offers 24 MHz count rate and ROHS3 compliance, its discontinuation trajectory makes it unsuitable for long-term production planning.

HEF4020BT,653 from Nexperia is an active product with the highest count rate at 35 MHz. However, the operating temperature range is restricted to -40°C ~ 85°C, making it unsuitable for applications requiring the full -55°C ~ 125°C range of the original CD4020BCM.

Parametric Equivalent:

CD4060BM is a Texas Instruments product with identical 12 MHz count rate and matching operating temperature range. This part functions as a parametric equivalent with active product status and ROHS3 compliance, though it carries a different base product number (CD4060 versus CD4020).

Frequently Asked Questions (FAQ)

Q: Can MC14020BDR2G replace CD4020BCM in all applications?

A: MC14020BDR2G is functionally equivalent for applications operating at or below 8 MHz. The lower count rate specification requires verification against circuit timing requirements. The extended voltage supply range (3 V ~ 18 V) and identical operating temperature range ensure compatibility with existing designs.

Q: What is the difference between CD4020BNSR and CD4020BNS?

A: Both are Texas Instruments CD4020 variants with 24 MHz count rate and identical electrical specifications. CD4020BNSR is active with Cut Tape and Digi-Reel packaging, while CD4020BNS is Last Time Buy status with Tube packaging. CD4020BNSR is recommended for new production due to active availability.

Q: Does package width difference affect PCB compatibility?

A: The CD4020BNS and CD4020BNSR use 16-SOIC with 0.209" width, compared to 0.154" width for CD4020BCM, MC14020BDR2G, and NLV14020BDR2G. PCB footprints must be verified for pitch and pad spacing compatibility before design implementation.

Q: Is HEF4020BT,653 suitable for industrial temperature range applications?

A: HEF4020BT,653 operates only within -40°C ~ 85°C, which does not cover the full -55°C ~ 125°C range of CD4020BCM. This part is unsuitable for applications requiring extended temperature operation.

Q: What does ROHS3 compliance mean for component selection?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead and other hazardous materials. All active substitute parts listed are ROHS3 compliant, ensuring regulatory alignment with modern manufacturing standards.

Q: Can CD4060BM be used as a direct replacement?

A: CD4060BM is a parametric equivalent with identical count rate (12 MHz) and operating temperature range. The different base product number indicates internal architecture differences, but functional equivalence is maintained for 14-bit binary counter applications with asynchronous reset and negative-edge triggering.