SN74HC4020PW Equivalent & Substitute Parts

Part Overview

The SN74HC4020PW is a 14-bit binary counter logic IC manufactured by Texas Instruments in a 16-SO surface mount package. This component functions as a negative edge-triggered counter with asynchronous reset capability, operating across a 2V to 6V supply voltage range and -40°C to 85°C temperature range. The part is currently in Last Time Buy status, making identification of functionally equivalent alternatives essential for ongoing design support and procurement planning.

Substiute Parts

SN74HC4020PW

Texas InstrumentsIn Stock: 459744SN74HC4020PW Datasheet

Current PartRFQ

SN74HC4020APWR

Texas InstrumentsIn Stock: 755SN74HC4020APWR Datasheet

MFR RecommendedRFQ

74HC4020PW,118

NXP SemiconductorsIn Stock: 1341074HC4020PW,118 Datasheet

MFR RecommendedRFQ

74HC4020PW-Q100J

Nexperia USA Inc.In Stock: 125374HC4020PW-Q100J Datasheet

MFR RecommendedRFQ

MC74HC4020ADTR2G

onsemiIn Stock: 2449MC74HC4020ADTR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74HC4020PW is determined by the following core parameters: logic type (binary counter), bit width (14-bit), counting direction (up), trigger mechanism (negative edge), reset type (asynchronous), and supply voltage range (2V to 6V). All identified substitute parts maintain these functional specifications. Package differences exist among substitutes, which affects board-level integration but does not alter electrical functionality. Operating temperature ranges and maximum count rates vary among substitutes and must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

SN74HC4020APWR is the primary recommended substitute from Texas Instruments, maintaining the original manufacturer lineage with Active product status. This part operates at identical supply voltage and temperature specifications as the original SN74HC4020PW, with the primary difference being package format (16-TSSOP versus 16-SOIC) and elevated maximum count rate (125 MHz versus 33 MHz). Board redesign is required to accommodate the different package footprint.

74HC4020PW,118 from NXP Semiconductors provides an Active status alternative with equivalent functional specifications. This part maintains ROHS3 compliance and MSL 1 rating. Specific operating temperature and count rate parameters are not provided in available documentation.

74HC4020PW-Q100J from Nexperia USA Inc. is qualified to AEC-Q100 automotive standards with extended operating temperature range (-40°C to 125°C) and Active product status. This part is suitable for applications requiring automotive-grade components. Package format is 16-TSSOP, requiring board-level redesign from the original 16-SOIC footprint.

MC74HC4020ADTR2G from onsemi carries Last Time Buy status identical to the original part, with extended operating temperature range (-55°C to 125°C) and lower maximum count rate (50 MHz). ROHS3 compliance and MSL 1 rating are maintained. Package format is 16-TSSOP.

Frequently Asked Questions (FAQ)

Q: Can SN74HC4020APWR be used as a direct pin-for-pin replacement for SN74HC4020PW?

A: Both parts maintain identical pin functionality and electrical specifications. However, the package format differs (16-TSSOP versus 16-SOIC), requiring PCB footprint modification. Pin-to-pin electrical compatibility is confirmed.

Q: What is the significance of the different package formats among substitute parts?

A: The original SN74HC4020PW uses 16-SOIC packaging (0.209" width), while most substitutes use 16-TSSOP packaging (0.173" width). TSSOP packages are narrower and require different PCB land patterns. Electrical functionality remains identical; only board layout must be updated.

Q: Why does SN74HC4020APWR have a higher maximum count rate (125 MHz) than the original SN74HC4020PW (33 MHz)?

A: Count rate specifications reflect tested performance characteristics of each part. The higher specification in SN74HC4020APWR indicates improved performance capability. Both parts operate within the same supply voltage and temperature ranges, maintaining functional compatibility.

Q: Is 74HC4020PW-Q100J suitable for automotive applications?

A: Yes. 74HC4020PW-Q100J carries AEC-Q100 qualification and extended operating temperature range (-40°C to 125°C), meeting automotive-grade component requirements. This part is appropriate for automotive system designs.

Q: What is the difference between Last Time Buy and Active product status?

A: Active status indicates ongoing production and availability. Last Time Buy status indicates the manufacturer will cease production, with limited remaining inventory. For long-term designs, Active status parts (SN74HC4020APWR, 74HC4020PW,118, 74HC4020PW-Q100J) are preferred over Last Time Buy parts (SN74HC4020PW, MC74HC4020ADTR2G).

Q: Are all substitute parts ROHS3 compliant?

A: SN74HC4020APWR, 74HC4020PW-Q100J, and MC74HC4020ADTR2G are confirmed ROHS3 compliant. 74HC4020PW,118 compliance status is not specified in available documentation.