74HC4020DB,118 Binary Counter IC - Equivalent & Substitute Parts

Part Overview

The 74HC4020DB,118 is a 14-bit binary counter logic IC manufactured by Nexperia USA Inc. in a 16-SSOP surface mount package. This component functions as a single-element counter with asynchronous reset and negative edge triggering, operating across a 2V to 6V supply range with a maximum count rate of 109 MHz. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

74HC4020DB,118

Nexperia USA Inc.In Stock: 72674HC4020DB,118 Datasheet

Current PartRFQ

74HC4020PW,118

NXP SemiconductorsIn Stock: 1341074HC4020PW,118 Datasheet

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SN74HC4020PW

Texas InstrumentsIn Stock: 459744SN74HC4020PW Datasheet

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SN74HC4020PWR

Texas InstrumentsIn Stock: 2897SN74HC4020PWR Datasheet

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SN74HC4020PWT

Texas InstrumentsIn Stock: 3040SN74HC4020PWT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74HC4020DB,118 is determined by the following critical parameters:

Core Functional Requirements:

• Logic type: Binary counter
• Bit configuration: 14-bit, single element
• Count direction: Up
• Reset mechanism: Asynchronous
• Trigger mechanism: Negative edge
• Supply voltage range: 2V ~ 6V (minimum overlap required)
• Operating temperature range: Must support -40°C minimum

Package Compatibility Considerations: The 74HC4020DB,118 uses a 16-SSOP package. Substitute parts may use alternative 16-pin surface mount packages (16-SOIC, 16-SO) provided pin configuration and electrical characteristics remain compatible with the 74HC4020 base product number.

Performance Tolerance: Count rate specifications may vary between manufacturers. The Nexperia part specifies 109 MHz; Texas Instruments variants specify 33 MHz. Both rates are acceptable for applications not requiring the maximum 109 MHz specification.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SN74HC4020PWR (Texas Instruments)

The SN74HC4020PWR is the preferred substitute for the obsolete 74HC4020DB,118. This part maintains active product status, ensuring long-term availability and supply chain stability. It is supplied in Tape & Reel packaging, suitable for automated assembly processes. The part carries ROHS3 compliance and meets all functional requirements of the 74HC4020 base product family. Current inventory of 2,800 units supports immediate procurement needs.

Secondary Recommendation: SN74HC4020PW (Texas Instruments)

The SN74HC4020PW provides an alternative with higher inventory availability (459,652 units). This part is classified as Last Time Buy, indicating a defined end-of-life timeline. It is supplied in Tube packaging and maintains full functional compatibility. Selection of this part requires confirmation of supply continuity within project timelines.

Tertiary Recommendation: SN74HC4020PWT (Texas Instruments)

The SN74HC4020PWT offers Last Time Buy status with Tape & Reel packaging (3,010 units available). This configuration supports high-volume manufacturing but requires verification of remaining production window.

Alternative: 74HC4020PW,118 (NXP Semiconductors)

The 74HC4020PW,118 maintains active product status with substantial inventory (13,336 units). This NXP part provides continuity with the original Nexperia manufacturer lineage. Detailed specifications for count rate and operating temperature range are not provided; verification against application requirements is necessary before selection.

Package Consideration:

The original 74HC4020DB,118 uses 16-SSOP packaging. All recommended substitutes employ 16-SOIC or 16-SO packages. These packages are mechanically and electrically compatible within the 74HC4020 product family but require PCB layout verification to confirm footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can I directly replace the 74HC4020DB,118 with SN74HC4020PWR without PCB modifications?

A: The SN74HC4020PWR uses a 16-SOIC package while the original uses 16-SSOP. Both are 16-pin surface mount packages with identical pin configurations for the 74HC4020 base product. PCB footprint verification is required; the packages have different physical dimensions and may require layout adjustments.

Q: What is the difference between the Texas Instruments parts (SN74HC4020PW, SN74HC4020PWR, SN74HC4020PWT)?

A: All three Texas Instruments parts are functionally identical 14-bit binary counters. The differences are packaging format and product status. SN74HC4020PW is supplied in Tube packaging (Last Time Buy status). SN74HC4020PWR is supplied in Tape & Reel (Active status). SN74HC4020PWT is supplied in Tape & Reel (Last Time Buy status). Selection depends on assembly process requirements and supply timeline needs.

Q: Why does the Nexperia part specify 109 MHz count rate while Texas Instruments specifies 33 MHz?

A: Both parts meet the 74HC4020 functional specification. The count rate difference reflects manufacturer process variations and characterization methods. For applications requiring operation above 33 MHz, the Nexperia 74HC4020PW,118 or original 74HC4020DB,118 should be specified. For standard applications, the 33 MHz rating of Texas Instruments parts is sufficient.

Q: Is the 74HC4020PW,118 from NXP a suitable replacement?

A: The 74HC4020PW,118 maintains active product status and is supplied in Bulk packaging. It is functionally compatible as a 14-bit binary counter. However, detailed electrical specifications (count rate, operating temperature range) are not provided in available documentation. Verification against application requirements and datasheet review is necessary before production commitment.

Q: What does "Last Time Buy" status mean for the SN74HC4020PW and SN74HC4020PWT?

A: Last Time Buy indicates the manufacturer has announced end-of-life for the part. Customers may place final orders within a defined window before production ceases. Parts with Last Time Buy status should not be selected for new long-term designs. The SN74HC4020PWR (Active status) is the recommended choice for designs requiring extended production support.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts carry ROHS3 compliance certification, meeting environmental and hazardous substance restrictions. MSL (Moisture Sensitivity Level) ratings are uniform at Level 1 (Unlimited) across all parts, indicating no special moisture handling requirements during storage or assembly.