74VCX32374G Equivalent & Substitute Parts

Part Overview

The 74VCX32374G is a quad D-type flip-flop logic IC manufactured by onsemi, featuring 4 elements with 8 bits per element in a 96-LFBGA package. This component is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations. The part operates across a wide voltage range (1.2V to 3.6V) with tri-state, non-inverted outputs suitable for bus driver applications.

Substiute Parts

74VCX32374G

onsemiIn Stock: 86274VCX32374G Datasheet

Current PartRFQ

74VCX16374MTDX

Fairchild SemiconductorIn Stock: 987374VCX16374MTDX Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74VCX32374G is determined by the following critical parameters:

• Logic Function: D-Type flip-flop with positive edge trigger
• Output Configuration: Tri-state, non-inverted outputs
• Clock Frequency: 250 MHz minimum
• Propagation Delay: 3ns @ 3.3V, 30pF maximum
• Voltage Supply Range: 1.2V ~ 3.6V compatibility
• Output Drive Capability: 24mA minimum for both high and low states
• Operating Temperature Range: -40°C ~ 85°C
• Series Compatibility: 74VCX logic family

The 74VCX16374MTDX qualifies as a functional substitute based on matching core electrical parameters, though with architectural differences in element count and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The 74VCX16374MTDX presents a viable substitute for the obsolete 74VCX32374G based on electrical parameter equivalence. Both components maintain identical clock frequency, propagation delay, output drive capability, and voltage supply specifications. The substitute part carries active product status from Fairchild Semiconductor, ensuring continued availability and supply chain stability.

Key considerations for selection:

• Element Count Difference: The substitute provides 2 elements versus 4 in the original part. System designs requiring 4 elements may necessitate multiple substitute units or alternative architectural approaches.
• Package Transition: Migration from 96-LFBGA to 48-TFSOP requires PCB redesign and layout modifications.
• Quiescent Current: The substitute operates at 20 µA versus 40 µA in the original, providing improved power efficiency.
• Compliance: Both parts carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, maintaining regulatory consistency.

Frequently Asked Questions (FAQ)

Q: Can the 74VCX16374MTDX directly replace the 74VCX32374G in existing designs?

A: Electrical parameters are equivalent, but direct PCB replacement is not possible due to different package formats (96-LFBGA versus 48-TFSOP) and pin configurations. Circuit redesign is required.

Q: What is the primary difference between these two parts?

A: The main difference is element count: the 74VCX32374G contains 4 flip-flop elements while the 74VCX16374MTDX contains 2 elements. Both maintain identical electrical performance specifications.

Q: Are there any performance trade-offs when using the substitute?

A: No performance degradation occurs. The substitute actually provides lower quiescent current (20 µA versus 40 µA), resulting in reduced power consumption.

Q: Why is the original part obsolete?

A: The 74VCX32374G is classified as obsolete by onsemi. The 74VCX16374MTDX maintains active status, providing long-term availability and supply security.

Q: What packaging considerations apply to this substitution?

A: The original uses a 96-pin fine-pitch BGA package (96-LFBGA), while the substitute uses a 48-pin thin shrink small outline package (48-TFSOP). PCB layout, thermal management, and assembly processes will differ significantly.

Q: Are voltage and temperature specifications identical?

A: Yes. Both parts operate across 1.2V to 3.6V supply voltage and -40°C to 85°C temperature range with identical output drive specifications.