FST16233MEA Equivalent & Substitute Parts

Part Overview

The FST16233MEA is an 8 x 1:2 Multiplexer/Demultiplexer logic IC manufactured by onsemi in a 56-BSSOP surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production support. The part operates across a single supply voltage range of 4V to 5.5V with an operating temperature range of -40°C to 85°C. Identifying compatible alternatives ensures design continuity and supply chain flexibility.

Substiute Parts

FST16233MEA

onsemiIn Stock: 2163FST16233MEA Datasheet

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SN74CBT16233DGG

Texas InstrumentsIn Stock: 807SN74CBT16233DGG Datasheet

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SN74CBT16233DGVR

Texas InstrumentsIn Stock: 4115SN74CBT16233DGVR Datasheet

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SN74CBT16233DL

Texas InstrumentsIn Stock: 2291SN74CBT16233DL Datasheet

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SN74CBT16233DLR

Texas InstrumentsIn Stock: 3059SN74CBT16233DLR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the FST16233MEA is based on the following critical parameters:

Functional Compatibility: All substitute parts maintain multiplexer/demultiplexer functionality with single supply operation and compatible voltage ranges (4.75V ~ 5.25V overlaps with the original 4V ~ 5.5V specification).

Thermal Compatibility: All substitutes operate across the same temperature range (-40°C ~ 85°C), ensuring thermal performance equivalence.

Package Compatibility: Substitutes are available in 56-BSSOP and 56-TFSOP packages, both surface mount configurations suitable for the same PCB footprints or minor layout adjustments.

Moisture Sensitivity: All substitutes maintain MSL 1 rating, indicating no moisture sensitivity concerns.

Regulatory Compliance: All substitutes carry ROHS3 compliance and REACH unaffected status, meeting modern environmental standards.

The Texas Instruments SN74CBT16233 series parts listed below provide direct functional equivalence with enhanced product status (Active) and full compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

For Direct Package Footprint Compatibility: SN74CBT16233DL and SN74CBT16233DLR are recommended as primary substitutes. Both use the 56-BSSOP package matching the original FST16233MEA footprint, eliminating PCB layout modifications. SN74CBT16233DL is supplied in tube packaging, while SN74CBT16233DLR is supplied in tape and reel format for automated assembly.

For Space-Constrained Designs: SN74CBT16233DGVR offers the smallest package footprint (56-TFSOP, 0.173" width) and is suitable for designs where board space is critical, though PCB layout adjustment is required.

For Standard Production Volumes: SN74CBT16233DGG provides active product status with standard 56-TFSOP packaging (0.240" width) and represents a balanced option between footprint and availability.

Compliance Advantage: All Texas Instruments substitutes carry ROHS3 compliance certification, exceeding the original part's environmental standards and ensuring compatibility with modern manufacturing and end-of-life requirements.

Frequently Asked Questions (FAQ)

Q: Can SN74CBT16233 series parts directly replace the FST16233MEA without circuit modifications?

A: Functional replacement is supported. SN74CBT16233DL and SN74CBT16233DLR maintain identical 56-BSSOP package geometry, requiring no PCB changes. SN74CBT16233DGG and SN74CBT16233DGVR use alternative TFSOP packages and require PCB footprint adjustment.

Q: What is the voltage supply difference between the original part and substitutes?

A: The FST16233MEA operates at 4V ~ 5.5V, while SN74CBT16233 series parts operate at 4.75V ~ 5.25V. The overlap range (4.75V ~ 5.25V) ensures functional compatibility in standard 5V supply applications. Designs operating below 4.75V require verification against specific application requirements.

Q: Are all substitute parts currently in active production?

A: Yes. All four SN74CBT16233 variants listed carry Active product status, ensuring long-term availability and supply chain stability compared to the obsolete FST16233MEA.

Q: What packaging options are available for automated assembly?

A: SN74CBT16233DLR is supplied in tape and reel format, optimized for pick-and-place assembly. SN74CBT16233DL is supplied in tube packaging for manual or semi-automated handling.

Q: Do the substitute parts meet modern environmental compliance standards?

A: All SN74CBT16233 variants are ROHS3 compliant and REACH unaffected, meeting current environmental regulations for both manufacturing and end-of-life disposal.

Q: What is the circuit configuration difference between the original and substitutes?

A: The FST16233MEA provides 8 x 1:2 configuration, while SN74CBT16233 series provides 16 x 1:2 configuration. Both maintain 2 independent circuits. The expanded channel count in substitutes provides additional functionality without affecting existing circuit operation when only 8 channels are utilized.