74VHC4040N Binary Counter 12-Bit Logic IC Equivalent & Substitute Parts

Part Overview

The 74VHC4040N is a 12-bit binary counter logic IC manufactured by onsemi, housed in a 16-DIP package. This component functions as a negative-edge-triggered asynchronous counter with a maximum count rate of 210 MHz and operates across a supply voltage range of 2V to 5.5V. The product is currently classified as obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and new design implementations where legacy component replacement is required.

Substiute Parts

74VHC4040N

onsemiIn Stock: 107974VHC4040N Datasheet

Current PartRFQ

SN74LV4040AN

Texas InstrumentsIn Stock: 2081SN74LV4040AN Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74VHC4040N is determined by strict alignment of the following critical parameters:

• Logic type classification as binary counter
• 12-bit counter configuration with single element
• Negative-edge trigger mechanism
• Asynchronous reset functionality
• Identical 16-DIP through-hole package format
• Compatible voltage supply range (2V to 5.5V minimum overlap)
• Operating temperature range compatibility (-40°C to 85°C)

The SN74LV4040AN from Texas Instruments meets all substitution criteria. While the count rate specification differs (95 MHz versus 210 MHz), this represents a functional derating rather than an incompatibility, as the substitute part maintains all functional and electrical interface requirements necessary for direct replacement in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

The SN74LV4040AN qualifies as a direct functional substitute for the 74VHC4040N based on matching logic architecture, pin configuration, and electrical interface specifications. The substitute part carries active product status from Texas Instruments, ensuring ongoing availability and supply chain continuity compared to the obsolete 74VHC4040N.

The SN74LV4040AN demonstrates ROHS3 compliance, providing regulatory advantage for applications subject to environmental and hazardous substance restrictions. Both parts maintain identical voltage supply ranges and operating temperature specifications, confirming compatibility across standard industrial and commercial operating conditions.

The reduced count rate specification of the SN74LV4040AN (95 MHz versus 210 MHz) requires evaluation against specific application timing requirements. In applications where the original 210 MHz specification is not a functional requirement, the substitute part provides equivalent performance. In timing-critical applications operating near the 210 MHz threshold, system-level timing analysis is necessary to confirm adequate performance margin with the substitute part.

Frequently Asked Questions (FAQ)

Q: Can the SN74LV4040AN directly replace the 74VHC4040N in existing circuit designs?

A: Yes, the SN74LV4040AN provides direct pin-compatible replacement in 16-DIP through-hole applications. Both parts share identical logic function, bit width, trigger mechanism, and electrical interface specifications. Substitution is valid provided the application timing requirements do not exceed the 95 MHz count rate specification of the SN74LV4040AN.

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

A: The 74VHC4040N specifies 210 MHz maximum count rate, while the SN74LV4040AN specifies 95 MHz. This difference reflects the speed-power tradeoff between the VHC and LV logic families. Applications operating at clock frequencies below 95 MHz experience no functional impact. Applications requiring operation above 95 MHz require verification that the SN74LV4040AN meets specific timing margins.

Q: Are there packaging or mounting differences between these parts?

A: No. Both the 74VHC4040N and SN74LV4040AN use identical 16-DIP (0.300", 7.62mm) through-hole packaging. Pin assignments and mechanical dimensions are equivalent, enabling direct socket substitution.

Q: What compliance advantages does the SN74LV4040AN offer?

A: The SN74LV4040AN carries ROHS3 compliance certification and active product status from Texas Instruments. The 74VHC4040N is classified as obsolete. For new designs or applications subject to environmental compliance requirements, the SN74LV4040AN provides regulatory alignment and supply chain assurance.

Q: Are voltage supply specifications identical between these parts?

A: Yes. Both parts operate across the 2V to 5.5V supply voltage range and maintain identical -40°C to 85°C operating temperature specifications. No power supply or thermal management modifications are required for substitution.