74HC4020N,652 Equivalent & Substitute Parts

Part Overview

The 74HC4020N,652 is a 14-bit binary counter logic IC manufactured by NXP USA Inc., housed in a 16-DIP package. This component functions as a single-element asynchronous binary counter with negative edge triggering, designed for digital counting and frequency division applications. The part is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. Substitute parts must maintain functional equivalence across core counter specifications while accommodating variations in performance ratings and compliance certifications.

Substiute Parts

74HC4020N,652

NXP USA Inc.In Stock: 108874HC4020N,652 Datasheet

Current PartRFQ

CD74HC4020E

Harris CorporationIn Stock: 1624CD74HC4020E Datasheet

MFR RecommendedRFQ

SN74HC4020N

Texas InstrumentsIn Stock: 2650SN74HC4020N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74HC4020N,652 is determined by the following mandatory parameters:

• Logic Type: Binary Counter
• Number of Elements: 1
• Number of Bits per Element: 14
• Direction: Up
• Reset: Asynchronous
• Trigger Type: Negative Edge
• Voltage - Supply: 2 V ~ 6 V
• Package / Case: 16-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole
• Series: 74HC

All identified substitute parts meet these core functional and mechanical requirements. Variations in count rate, operating temperature range, and compliance certifications do not affect functional substitutability for standard applications within the specified supply voltage and package constraints.

Parameter Comparison

Engineering Selection Recommendations

All three parts are functionally equivalent as 14-bit binary counters within the 74HC logic family and share identical core specifications. Selection should be based on the following criteria:

SN74HC4020N (Texas Instruments) is the preferred substitute for new designs and ongoing procurement. This part maintains active product status, ROHS3 compliance, and operates within the -40°C ~ 85°C temperature range, suitable for standard industrial and commercial applications.

74HC4020N,652 (NXP) offers the highest count rate at 109 MHz and the widest operating temperature range (-40°C ~ 125°C), making it suitable for high-frequency or extended-temperature applications where performance headroom is required. However, obsolete status may limit future availability.

CD74HC4020E (Harris Corporation) provides the widest operating temperature range (-55°C ~ 125°C) for extreme low-temperature environments. RoHS non-compliance restricts use in regulated markets. Obsolete status affects procurement viability.

For applications requiring RoHS3 compliance and active product support, SN74HC4020N is the recommended choice. For legacy system maintenance or high-frequency requirements, the NXP part remains functionally valid within its specified parameters.

Frequently Asked Questions (FAQ)

Q: Can SN74HC4020N directly replace 74HC4020N,652 in existing designs?

A: Yes. Both parts share identical functional specifications: 14-bit binary counter, asynchronous reset, negative edge trigger, 2 V ~ 6 V supply, and 16-DIP package. Pin-for-pin compatibility is maintained. Operating temperature and count rate differences do not affect functional substitutability in standard applications.

Q: What is the significance of the count rate difference between these parts?

A: Count rate (109 MHz for NXP, 35 MHz for Harris, 33 MHz for TI) defines the maximum input clock frequency. For applications operating below 33 MHz, all three parts are equivalent. Applications requiring operation above 35 MHz must use the NXP part (74HC4020N,652).

Q: Are there compliance differences that affect substitution?

A: Yes. The NXP and TI parts are ROHS3 compliant; the Harris part is not. For applications subject to RoHS regulations, only 74HC4020N,652 or SN74HC4020N are acceptable. The Harris part (CD74HC4020E) is restricted to non-regulated markets.

Q: Does operating temperature range affect substitutability?

A: Operating temperature range does not affect functional substitutability but determines application suitability. The NXP part (-40°C ~ 125°C) and Harris part (-55°C ~ 125°C) support extended temperature ranges. The TI part (-40°C ~ 85°C) is suitable for standard industrial applications. Select based on your application's thermal requirements.

Q: Are all three parts available in the same package?

A: Yes. All three parts are supplied in 16-DIP (0.300", 7.62mm) through-hole packages with identical pin configurations, ensuring mechanical and electrical compatibility on PCBs designed for the 74HC4020 footprint.

Q: Why is the NXP part listed as obsolete if it has superior specifications?

A: Product status reflects manufacturer production decisions, not technical capability. Obsolete parts may have limited future availability but remain functionally valid for current applications. For long-term procurement security, the active TI part (SN74HC4020N) is recommended.