NLV74FST3257DR2G Equivalent & Substitute Parts

Part Overview

The NLV74FST3257DR2G is a 4 x 2:1 Multiplexer/Demultiplexer logic integrated circuit manufactured by onsemi in a 16-SOIC surface mount package. This component is classified as Obsolete, indicating it has reached end-of-life status. Locating equivalent and substitute parts is necessary to support ongoing system maintenance, design updates, and production continuity where this device was originally specified.

Substiute Parts

NLV74FST3257DR2G

onsemiIn Stock: 5235NLV74FST3257DR2G Datasheet

Current PartRFQ

MC74FST3257DR2G-Q

onsemiIn Stock: 990MC74FST3257DR2G-Q Datasheet

MFR RecommendedRFQ

74FST3257DR2G

onsemiIn Stock: 443774FST3257DR2G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the NLV74FST3257DR2G are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Electrical Parameters:

• Circuit configuration: 4 x 2:1 Multiplexer/Demultiplexer
• Independent circuits: 1
• Voltage supply range: 4V ~ 5.5V (Single Supply)
• Operating temperature range: -40°C ~ 85°C

Mechanical Parameters:

• Package type: 16-SOIC
• Mounting type: Surface Mount
• Physical dimensions: 0.154" width (3.90mm)

Compliance Parameters:

• RoHS3 Compliance
• REACH Unaffected status
• Moisture Sensitivity Level 1

Substitutes are grouped into two categories: Manufacturer Recommended equivalents and Parametric Equivalents. Both categories maintain identical electrical specifications and package compatibility while differing in product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

MC74FST3257DR2G-Q (Manufacturer Recommended Substitute): This part is the primary recommended substitute. It is manufactured by onsemi with Active product status, ensuring long-term availability and ongoing manufacturer support. It maintains full electrical and mechanical compatibility with the original NLV74FST3257DR2G while offering superior lifecycle status. This part is suitable for new designs and production continuity where extended component availability is required.

74FST3257DR2G (Parametric Equivalent): This part provides parametric equivalence with identical electrical specifications and package compatibility. However, its Last Time Buy status indicates limited remaining availability. This part is suitable for legacy system repairs and maintenance where the original specification must be maintained but production volumes are limited. The Tape & Reel packaging format differs from the original Cut Tape format, requiring verification of procurement and handling procedures.

Product Status Considerations: The original NLV74FST3257DR2G (Obsolete status) should be replaced with the MC74FST3257DR2G-Q for new applications and long-term production support. The 74FST3257DR2G remains available as a transitional option but should not be selected for new designs due to its Last Time Buy designation.

Frequently Asked Questions (FAQ)

Q: Can MC74FST3257DR2G-Q be used as a direct replacement for NLV74FST3257DR2G? A: Yes. Both parts share identical electrical parameters (4 x 2:1 multiplexer/demultiplexer configuration, 4V ~ 5.5V supply, -40°C ~ 85°C operating range), identical package type (16-SOIC), and identical compliance certifications (ROHS3, REACH Unaffected, MSL 1). The MC74FST3257DR2G-Q is pin-compatible and functionally equivalent.

Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging? A: Cut Tape packaging provides individual component strips suitable for manual handling and small-quantity applications. Tape & Reel packaging provides components on continuous reels suitable for automated assembly equipment. Both formats contain identical components; the difference is in presentation and handling method. Verify your assembly process compatibility before selecting packaging format.

Q: Why is the original NLV74FST3257DR2G classified as Obsolete? A: Obsolete status indicates the manufacturer has discontinued production and support for this part number. This is a normal lifecycle event for electronic components. Substitute parts with Active or Last Time Buy status should be selected to ensure ongoing availability and manufacturer support.

Q: Are there any electrical performance differences between the substitute parts and the original? A: No. All substitute parts maintain identical electrical specifications including voltage supply range, operating temperature range, circuit configuration, and independent circuit count. Electrical performance is equivalent across all listed parts.

Q: What does Last Time Buy status mean for the 74FST3257DR2G? A: Last Time Buy indicates the manufacturer is accepting final orders before discontinuing production. Inventory is limited and will not be replenished. This part should only be selected for legacy system maintenance where limited quantities are required, not for new production or designs.