SN74HC4020DR Equivalent & Substitute Parts

Part Overview

The SN74HC4020DR is a 14-bit binary counter logic IC manufactured by Texas Instruments, housed in a 16-SOIC surface mount package. This counter operates as a single-element, negative-edge-triggered device with asynchronous reset and timing characteristics. The part is currently in active production status with 6222 units in stock.

Substitute parts become necessary due to supply constraints, manufacturing discontinuation, packaging preferences, or specific operational requirements such as extended temperature ranges or automotive qualification. The following equivalent and substitute parts maintain the core functional parameters while offering alternatives in packaging, manufacturer, or operational specifications.

Substiute Parts

SN74HC4020DR

Texas InstrumentsIn Stock: 6291SN74HC4020DR Datasheet

Current PartRFQ

SN74HC4060DR

Texas InstrumentsIn Stock: 5407SN74HC4060DR Datasheet

Parametric EquivalentRFQ

SN74HC4060DT

Texas InstrumentsIn Stock: 6832SN74HC4060DT Datasheet

Parametric EquivalentRFQ

74HC4020D,653

NXP SemiconductorsIn Stock: 3624074HC4020D,653 Datasheet

MFR RecommendedRFQ

74HC4020D-Q100J

Nexperia USA Inc.In Stock: 335774HC4020D-Q100J 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 SN74HC4020DR is determined by the following critical parameters:

Functional Equivalence Requirements:

• Logic Type: Binary Counter
• Number of Bits per Element: 14 Bit
• Number of Elements: 1
• Direction: Up
• Trigger Type: Negative Edge
• Reset: Asynchronous
• Voltage - Supply: 2 V ~ 6 V
• Package / Case: 16-SOIC (0.154", 3.90mm Width)

Allowable Variations:

• Count Rate: May vary (33 MHz baseline; higher rates acceptable)
• Operating Temperature: May extend beyond -40°C ~ 85°C
• Manufacturer: Different manufacturers permitted
• Packaging Format: Cut Tape, Tape & Reel, Tube, or Bulk acceptable
• Product Status: Active or Last Time Buy acceptable

Substitute parts are grouped into two categories: parametric equivalents (identical functional specifications with packaging or manufacturer differences) and manufacturer-recommended alternatives (functionally equivalent with extended specifications or automotive qualification).

Parameter Comparison

Engineering Selection Recommendations

For Active Production Applications: Select SN74HC4020DR (primary choice) or 74HC4020D-Q100J. The 74HC4020D-Q100J offers extended operating temperature range (-40°C ~ 125°C) and automotive AEC-Q100 qualification, suitable for automotive or industrial environments requiring higher temperature tolerance and reliability certification.

For Standard Commercial Applications: SN74HC4020DR remains the preferred selection. Alternative packaging formats (SN74HC4060DR in Cut Tape format) are available from the same manufacturer with identical electrical specifications.

For Extended Temperature or Automotive Requirements: 74HC4020D-Q100J is the designated choice, providing AEC-Q100 automotive qualification and operating temperature range of -40°C ~ 125°C.

For High-Volume or Cost-Optimized Procurement: 74HC4020D,653 (NXP Semiconductors) offers the largest inventory (36185 units) in bulk packaging format, suitable for high-volume manufacturing environments.

Parts to Avoid for New Designs: MC74HC4020ADG (onsemi) is marked Obsolete and should not be selected for new production. MC74HC4020ADR2G (onsemi) is Last Time Buy status, indicating discontinued production.

Frequently Asked Questions (FAQ)

Q: Can SN74HC4060DR substitute for SN74HC4020DR? A: SN74HC4060DR maintains identical electrical specifications (33 MHz count rate, -40°C ~ 85°C operating temperature, 2 V ~ 6 V supply voltage, 16-SOIC package). The primary difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel). Functional substitution is valid; verify packaging compatibility with assembly equipment.

Q: What is the difference between SN74HC4060DT and SN74HC4020DR? A: Both parts share identical electrical specifications. SN74HC4060DT is marked Last Time Buy status, indicating production discontinuation. For new designs, SN74HC4020DR is preferred due to Active status. Both use Tape & Reel packaging.

Q: Is 74HC4020D-Q100J a direct replacement? A: 74HC4020D-Q100J is functionally equivalent with enhanced specifications: higher count rate (109 MHz versus 33 MHz) and extended operating temperature (-40°C ~ 125°C versus -40°C ~ 85°C). It includes AEC-Q100 automotive qualification. Pin configuration and 16-SOIC package are compatible. The higher count rate and temperature range present no compatibility issues in standard applications.

Q: Why are onsemi parts (MC74HC4020ADG, MC74HC4020ADR2G) listed if they are Obsolete or Last Time Buy? A: These parts are documented as existing substitutes with extended temperature ranges (-55°C ~ 125°C) and higher count rates (50 MHz). However, their discontinued or end-of-life status makes them unsuitable for new production. They are included for reference in legacy system maintenance or existing inventory management.

Q: Can I use 74HC4020D,653 (NXP) in place of the Texas Instruments part? A: 74HC4020D,653 maintains the same base product number (74HC4020) and 16-SOIC package. Functional compatibility is established. The bulk packaging format requires verification with assembly processes designed for tape or reel formats. Inventory availability (36185 units) supports high-volume applications.

Q: What packaging formats are available? A: Available formats include Tape & Reel (TR), Cut Tape (CT) & Digi-Reel®, Tube, and Bulk. Verify assembly equipment compatibility before selection. Tape & Reel and Cut Tape formats are standard for automated surface mount assembly.