74HC4020D,652 Binary Counter 14-Bit Equivalent & Substitute Parts

Part Overview

The 74HC4020D,652 is a 14-bit binary counter IC manufactured by Nexperia USA Inc., designed for digital logic applications requiring asynchronous counting functionality. This part operates as a negative edge-triggered counter with a maximum count rate of 109 MHz and supports supply voltages from 2 V to 6 V. The device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support, production continuity, and component sourcing.

Substiute Parts

74HC4020D,652

Nexperia USA Inc.In Stock: 109874HC4020D,652 Datasheet

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CD74HC4020M

Texas InstrumentsIn Stock: 2387CD74HC4020M Datasheet

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CD74HC4020M96

Texas InstrumentsIn Stock: 15557CD74HC4020M96 Datasheet

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MC74HC4020ADG

onsemiIn Stock: 1962MC74HC4020ADG Datasheet

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MC74HC4020ADR2G

onsemiIn Stock: 3693MC74HC4020ADR2G Datasheet

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SN74HC4020D

Texas InstrumentsIn Stock: 2265SN74HC4020D Datasheet

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SN74HC4020DR

Texas InstrumentsIn Stock: 6291SN74HC4020DR Datasheet

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SN74HC4020NSR

Texas InstrumentsIn Stock: 2128SN74HC4020NSR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74HC4020D,652 is determined by the following critical parameters:

Functional Equivalence: All substitute parts must be 14-bit binary counters with negative edge triggering and asynchronous reset functionality.

Electrical Compatibility: Supply voltage range (2 V ~ 6 V) and logic family (74HC series) must be maintained.

Package Compatibility: Primary substitutes use 16-SOIC (0.154", 3.90mm Width) packaging for direct board-level replacement. Secondary options include 16-SO (0.209", 5.30mm Width) for applications where package footprint tolerance permits.

Operational Parameters: Count rate, operating temperature range, and reset type determine functional suitability for specific circuit requirements.

Compliance & Status: RoHS3 compliance and current product availability status influence long-term sourcing viability.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Package):

CD74HC4020M96 is the primary recommended substitute. It maintains the 16-SOIC (0.154", 3.90mm Width) package footprint, carries Active product status ensuring long-term availability, and is ROHS3 compliant. Although the count rate is reduced to 35 MHz compared to the original 109 MHz, this remains suitable for most standard logic applications. The extended operating temperature range (-55°C ~ 125°C) provides superior thermal performance.

SN74HC4020DR offers an alternative with Active status and Tape & Reel packaging suitable for high-volume production. Count rate is 33 MHz with operating temperature range of -40°C ~ 85°C, making it appropriate for standard industrial applications.

For Extended Temperature Range:

MC74HC4020ADR2G provides Last Time Buy status with a 50 MHz count rate and -55°C ~ 125°C operating range, suitable for applications requiring broader temperature performance than standard Texas Instruments offerings.

For Package Tolerance Applications:

SN74HC4020NSR accommodates designs where the larger 16-SO (0.209", 5.30mm Width) package is acceptable. This part maintains Active status and is readily available in Tape & Reel format.

Compliance Verification:

All listed substitutes maintain ROHS3 compliance and REACH Unaffected status, matching the original part's regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can CD74HC4020M96 directly replace 74HC4020D,652 on the PCB?

A: Yes, CD74HC4020M96 uses the identical 16-SOIC (0.154", 3.90mm Width) package and maintains all functional parameters (14-bit binary counter, negative edge trigger, asynchronous reset, 2 V ~ 6 V supply). The reduced count rate (35 MHz vs. 109 MHz) is not a constraint for most applications operating below this threshold.

Q: What is the difference between CD74HC4020M and CD74HC4020M96?

A: Both are manufactured by Texas Instruments with identical electrical specifications. The primary difference is product status: CD74HC4020M is Obsolete, while CD74HC4020M96 is Active. CD74HC4020M96 is the preferred choice for new designs and ongoing production due to guaranteed availability.

Q: Why does SN74HC4020NSR have a different package width (5.30mm vs. 3.90mm)?

A: SN74HC4020NSR uses a 16-SO package (0.209" width) compared to the standard 16-SOIC (0.154" width). This represents a different physical footprint and requires PCB layout modification. Use only if the original 16-SOIC package is unavailable and board redesign is acceptable.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all listed substitute parts are ROHS3 compliant and REACH Unaffected, matching the regulatory status of the original 74HC4020D,652.

Q: Which substitute offers the best long-term availability?

A: CD74HC4020M96 and SN74HC4020DR both carry Active product status, indicating current manufacturing and distribution. CD74HC4020M96 is recommended as the primary choice due to its extended operating temperature range and established supply chain presence.

Q: Can I use MC74HC4020ADR2G if my application requires higher count rates?

A: MC74HC4020ADR2G provides a 50 MHz count rate, which is lower than the original 109 MHz specification. If your circuit requires the full 109 MHz performance, none of the listed substitutes provide equivalent speed. Verify actual circuit timing requirements before substitution.

Q: What packaging format should I specify for production?

A: For automated assembly, specify Tape & Reel (TR) format such as SN74HC4020DR or SN74HC4020NSR. For manual assembly or low-volume builds, Tube or Cut Tape (CT) formats are acceptable. CD74HC4020M96 is available in Cut Tape format.