74VHC4040MTCX Binary Counter 12-Bit Equivalent & Substitute Parts

Part Overview

The 74VHC4040MTCX is a 12-bit binary counter IC manufactured by onsemi in a 16-TSSOP surface mount package. This logic component functions as a negative edge-triggered counter with asynchronous reset capability, operating across a 2V to 5.5V supply voltage range. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

74VHC4040MTCX

onsemiIn Stock: 219074VHC4040MTCX Datasheet

Current PartRFQ

SN74LV4040APWR

Texas InstrumentsIn Stock: 3238SN74LV4040APWR Datasheet

SimilarRFQ

74VHC4040FT

Toshiba Semiconductor and StorageIn Stock: 167674VHC4040FT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74VHC4040MTCX is determined by strict alignment with the following critical parameters:

• Logic Function: Binary counter with 12-bit capacity, 1 element, up-counting direction
• Trigger Characteristics: Negative edge trigger with asynchronous reset
• Electrical Specifications: 2V to 5.5V supply voltage compatibility, -40°C to 85°C operating range
• Physical Form Factor: 16-TSSOP package with identical 0.173" (4.40mm) width
• Surface Mount Compatibility: Identical mounting type and pin configuration

Two substitute parts meet these criteria:

1. SN74LV4040APWR (Texas Instruments) — Functional equivalent with reduced count rate (95 MHz vs. 210 MHz)
2. 74VHC4040FT (Toshiba Semiconductor and Storage) — Parametric equivalent with matching count rate (210 MHz)

Parameter Comparison

Engineering Selection Recommendations

74VHC4040FT (Toshiba Semiconductor and Storage) is the primary substitute for the obsolete 74VHC4040MTCX. This part maintains identical count rate performance (210 MHz), operates within the same voltage and temperature specifications, and is housed in the same 16-TSSOP package. The part is currently in active production status with ROHS3 compliance certification, ensuring long-term availability and regulatory alignment.

SN74LV4040APWR (Texas Instruments) serves as a functional alternative when count rate reduction is acceptable within system design constraints. This part operates at 95 MHz, representing a 55% reduction in maximum count frequency compared to the original specification. All other electrical and mechanical parameters remain compatible. This substitute is also in active production with ROHS3 compliance.

Both substitutes carry identical moisture sensitivity ratings (MSL 1) and REACH unaffected status, matching the original part's environmental compliance profile.

Frequently Asked Questions (FAQ)

Q: Can the SN74LV4040APWR replace the 74VHC4040MTCX in all applications?

A: The SN74LV4040APWR is functionally compatible for applications where the maximum count rate does not exceed 95 MHz. Applications requiring the full 210 MHz count rate must use the 74VHC4040FT instead.

Q: Are the pin configurations identical across all three parts?

A: Yes. All three parts use the 16-TSSOP package with identical pin assignments, enabling direct PCB-level substitution without layout modification.

Q: What is the difference between the 74VHC and 74LV series designations?

A: The 74VHC series (onsemi and Toshiba) supports higher count rates (210 MHz). The 74LV series (Texas Instruments) operates at lower frequencies (95 MHz) but maintains full functional compatibility for binary counter operation within its speed specification.

Q: Are both substitute parts currently available?

A: Yes. The 74VHC4040FT (Toshiba) and SN74LV4040APWR (Texas Instruments) are both in active production status with confirmed inventory availability.

Q: Do the substitute parts meet the same environmental and compliance standards?

A: Both substitutes are ROHS3 compliant, carry MSL 1 moisture sensitivity ratings, and maintain REACH unaffected status, matching the original part's compliance profile.