CBT3257AD,112 Equivalent & Substitute Parts

Part Overview

The CBT3257AD,112 is a 4 x 2:1 Multiplexer/Demultiplexer logic IC manufactured by Nexperia USA Inc. in a 16-SOIC surface mount package. This component is classified as Obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity. The part operates within a single supply voltage range of 4.5V to 5.5V and maintains performance across the industrial temperature range of -40°C to 85°C. Equivalent substitutes are available from multiple manufacturers with active or last-time-buy product status.

Substiute Parts

CBT3257AD,112

Nexperia USA Inc.In Stock: 886CBT3257AD,112 Datasheet

Current PartRFQ

74FST3257DR2G

onsemiIn Stock: 443774FST3257DR2G Datasheet

DirectRFQ

SN74CBT3257CDR

Texas InstrumentsIn Stock: 2314SN74CBT3257CDR Datasheet

SimilarRFQ

SN74CBT3257DR

Texas InstrumentsIn Stock: 2629SN74CBT3257DR Datasheet

SimilarRFQ

SN74CBT3257CD

Texas InstrumentsIn Stock: 1107SN74CBT3257CD Datasheet

Parametric EquivalentRFQ

SN74CBT3257D

Texas InstrumentsIn Stock: 2177SN74CBT3257D Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CBT3257AD,112 is determined by strict equivalence across the following parameters: circuit type (4 x 2:1 Multiplexer/Demultiplexer), independent circuit count (1), voltage supply range compatibility (minimum 4.5V, maximum 5.5V), operating temperature range (-40°C to 85°C), package type (16-SOIC with 0.154" width, 3.90mm), and surface mount mounting type. All identified substitutes maintain these electrical and mechanical specifications. Substitutes are categorized by manufacturer and product status: Direct Manufacturer Equivalent (onsemi 74FST3257DR2G), Similar Manufacturer Parts (Texas Instruments SN74CBT3257CDR and SN74CBT3257DR), and Parametric Equivalents (Texas Instruments SN74CBT3257CD and SN74CBT3257D).

Parameter Comparison

Engineering Selection Recommendations

For new designs and production continuity, SN74CBT3257CDR (Texas Instruments, Active status) is the primary selection due to its active product status and identical electrical specifications to the CBT3257AD,112. This part maintains the 74CBT series lineage and ensures long-term availability.

SN74CBT3257CD and SN74CBT3257D (both Texas Instruments, 74CBT series) are secondary options with active or last-time-buy status. These parts are parametrically equivalent and suitable for applications where packaging format (Tube) is acceptable.

SN74CBT3257DR (Texas Instruments, Last Time Buy) and 74FST3257DR2G (onsemi, Last Time Buy) are suitable for existing inventory management but should not be selected for new long-term production due to last-time-buy status. The 74FST3257DR2G operates at a minimum voltage of 4V, which is 0.5V lower than the CBT3257AD,112 specification of 4.5V minimum.

All substitutes maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can the 74FST3257DR2G replace the CBT3257AD,112 in all applications?

A: The 74FST3257DR2G is functionally equivalent for the 4 x 2:1 multiplexer/demultiplexer circuit. However, it operates at a minimum supply voltage of 4V compared to the CBT3257AD,112 minimum of 4.5V. Applications requiring operation below 4.5V cannot use this substitute. All other electrical and mechanical parameters are compatible.

Q: What is the difference between the Texas Instruments SN74CBT3257CDR, SN74CBT3257CD, and SN74CBT3257D variants?

A: These three parts are parametrically identical in electrical specifications. The differences are packaging format and product status. SN74CBT3257CDR is supplied in Cut Tape (CT) & Digi-Reel format with Active status. SN74CBT3257CD and SN74CBT3257D are supplied in Tube packaging. SN74CBT3257CD has Active status, while SN74CBT3257D has Last Time Buy status. Select based on packaging requirements and availability needs.

Q: Are all substitutes pin-compatible with the CBT3257AD,112?

A: All identified substitutes use the 16-SOIC package with identical 0.154" width and 3.90mm dimensions. Pin compatibility is maintained across all substitutes for the 4 x 2:1 multiplexer/demultiplexer function.

Q: Which substitute should be selected for new production designs?

A: SN74CBT3257CDR from Texas Instruments is the recommended choice for new production due to its Active product status, ensuring long-term availability and supply continuity.