CD74HC4020MT Binary Counter 14-Bit Equivalent & Substitute Parts

Part Overview

The CD74HC4020MT is a 14-bit binary counter IC manufactured by Texas Instruments in a 16-SOIC surface mount package. This logic component functions as a negative edge-triggered counter with asynchronous reset capability, operating across a 2V to 6V supply range with a maximum count rate of 35 MHz. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Substiute Parts

CD74HC4020MT

Texas InstrumentsIn Stock: 854CD74HC4020MT Datasheet

Current PartRFQ

CD74HC4020M96

Texas InstrumentsIn Stock: 15557CD74HC4020M96 Datasheet

Parametric EquivalentRFQ

CD74HC4060M96

Texas InstrumentsIn Stock: 14239CD74HC4060M96 Datasheet

Parametric EquivalentRFQ

CD74HC4060MT

Texas InstrumentsIn Stock: 2700CD74HC4060MT Datasheet

Parametric EquivalentRFQ

74HC4020D,653

NXP SemiconductorsIn Stock: 3624074HC4020D,653 Datasheet

MFR RecommendedRFQ

MC74HC4020ADG

onsemiIn Stock: 1962MC74HC4020ADG Datasheet

MFR RecommendedRFQ

MC74HC4020ADR2G

onsemiIn Stock: 3693MC74HC4020ADR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD74HC4020MT is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Logic type: Binary counter
• Bit count: 14 bits
• Trigger mechanism: Negative edge
• Reset configuration: Asynchronous
• Supply voltage range: 2V to 6V minimum
• Operating temperature range: -55°C to 125°C minimum
• Count rate: 35 MHz or greater

Mechanical Equivalence Requirements:

• Package type: 16-SOIC (0.154", 3.90mm Width)
• Mounting type: Surface mount
• Pin configuration: Identical to base product number 74HC4020

Compliance Requirements:

• RoHS3 compliance
• MSL rating: 1 (Unlimited)

Parts meeting all three requirement categories are classified as parametric equivalents. Parts from alternative manufacturers meeting identical electrical and mechanical specifications are classified as manufacturer-recommended equivalents.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute (Recommended for New Designs): CD74HC4020M96 is the optimal substitute. Manufactured by Texas Instruments with identical electrical specifications to the CD74HC4020MT, this part maintains full parametric equivalence while offering active product status and superior inventory availability (15,536 units in stock). The Cut Tape packaging format provides flexibility for both prototype and production environments.

Secondary Substitute (Active Status, Alternative Packaging): CD74HC4060M96 and CD74HC4060MT are functionally equivalent alternatives from Texas Instruments. Both maintain identical electrical parameters and 16-SOIC packaging. CD74HC4060M96 is active with high inventory levels; CD74HC4060MT carries Last Time Buy status. These parts are suitable for applications where the CD74HC4020M96 is unavailable.

Cross-Manufacturer Alternatives (Compliance Verified): MC74HC4020ADR2G (onsemi) provides parametric equivalence with enhanced count rate performance (50 MHz vs. 35 MHz), RoHS3 compliance, and MSL-1 rating. Current product status is Last Time Buy with 3,600 units available. MC74HC4020ADG (onsemi) offers identical specifications but carries Obsolete status and should be avoided for new applications.

Limited Information Substitute: 74HC4020D,653 (NXP Semiconductors) is listed as an active manufacturer-recommended equivalent but lacks complete parametric documentation in available sources. This part should be selected only when other alternatives are exhausted, with verification of electrical and mechanical compatibility required.

Frequently Asked Questions (FAQ)

Q: Can CD74HC4020M96 be used as a direct replacement for CD74HC4020MT? A: Yes. Both parts are manufactured by Texas Instruments with identical electrical specifications (14-bit binary counter, 35 MHz count rate, 2V–6V supply, -55°C to 125°C operating range) and identical 16-SOIC packaging. The primary difference is packaging format (Cut Tape vs. Tape & Reel) and product status (Active vs. Discontinued). Pin configuration and functional behavior are identical.

Q: What is the difference between CD74HC4020 and CD74HC4060 variants? A: Both are 14-bit binary counters with identical electrical and mechanical specifications. The base product numbers (4020 vs. 4060) indicate different internal counter configurations, but from a substitution perspective, they maintain equivalent electrical parameters and 16-SOIC packaging. Verify application-specific counter sequence requirements before substitution.

Q: Are onsemi MC74HC4020 parts compatible with Texas Instruments CD74HC4020MT? A: MC74HC4020ADR2G and MC74HC4020ADG maintain full parametric equivalence with identical 14-bit counter function, 2V–6V supply range, -55°C to 125°C operating temperature, and 16-SOIC packaging. The onsemi parts offer higher count rate performance (50 MHz vs. 35 MHz). However, MC74HC4020ADG is Obsolete status; MC74HC4020ADR2G is Last Time Buy. Both are RoHS3 compliant with MSL-1 rating.

Q: Does packaging format affect electrical performance? A: No. Cut Tape (CT), Tape & Reel (TR), and Bulk packaging formats do not affect electrical performance or pin configuration. Selection between packaging formats depends on procurement volume, handling requirements, and assembly process compatibility. All formats maintain identical component specifications.

Q: What is the significance of product status (Active, Last Time Buy, Discontinued, Obsolete)? A: Product status indicates manufacturer support and availability timeline. Active parts have ongoing production and indefinite availability. Last Time Buy indicates final production run with limited future availability. Discontinued parts are no longer produced by the original manufacturer. Obsolete parts are no longer supported. For new designs, prioritize Active status parts; for legacy support, Last Time Buy parts provide transition options.

Q: Are all substitute parts RoHS3 compliant? A: All listed substitute parts carry RoHS3 compliance certification. This compliance status is maintained across all packaging formats and product statuses listed. MSL-1 (Unlimited) moisture sensitivity rating is consistent across all alternatives, indicating no special storage or handling requirements.