FST16232MTDX Equivalent & Substitute Parts

Part Overview

The FST16232MTDX is a 16 x 1:2 Multiplexer/Demultiplexer logic IC manufactured by onsemi in a 56-TSSOP surface mount package. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The part operates with single supply voltage between 4V and 5.5V across an industrial temperature range of -40°C to 85°C.

Substiute Parts

FST16232MTDX

onsemiIn Stock: 1152FST16232MTDX Datasheet

Current PartRFQ

SN74CBT16232DGGR

Texas InstrumentsIn Stock: 2102SN74CBT16232DGGR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FST16232MTDX is determined by the following critical parameters:

• Circuit Configuration: Must be 16 x 1:2 Multiplexer/Demultiplexer topology
• Package Type: Must be 56-TFSOP with identical 0.240" (6.10mm) width for PCB compatibility
• Voltage Supply: Single supply operation within compatible voltage range
• Operating Temperature Range: Must support -40°C to 85°C minimum
• Mounting Type: Surface mount technology required
• Independent Circuits: Single circuit configuration

The SN74CBT16232DGGR from Texas Instruments meets all substitution criteria as a direct functional equivalent with identical electrical specifications and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The SN74CBT16232DGGR is the qualified substitute for FST16232MTDX applications. Selection rationale is based on:

• Functional Equivalence: Identical 16 x 1:2 multiplexer/demultiplexer circuit configuration with matching pin count and package footprint
• Voltage Compatibility: Operating voltage range of 4.5V ~ 5.5V encompasses the critical 5V supply point and overlaps with the original part's 4V ~ 5.5V specification
• Temperature Range: Full -40°C to 85°C industrial temperature support matches original specifications
• Active Product Status: Texas Instruments SN74CBT16232DGGR maintains active production status, ensuring long-term availability and supply chain continuity
• Compliance: ROHS3 compliance of the substitute part meets current regulatory requirements
• Package Compatibility: Identical 56-TFSOP package dimensions ensure direct PCB layout compatibility without redesign

Frequently Asked Questions (FAQ)

Q: Can the SN74CBT16232DGGR directly replace the FST16232MTDX without PCB modifications?

A: Yes. Both parts use the 56-TFSOP package with identical 0.240" (6.10mm) width and pin configuration, enabling direct substitution without PCB layout changes.

Q: What is the voltage supply difference between these parts?

A: The FST16232MTDX operates at 4V ~ 5.5V while the SN74CBT16232DGGR operates at 4.5V ~ 5.5V. The substitute part's minimum voltage is 0.5V higher. For applications using standard 5V supply, this difference is not significant. Systems operating below 4.5V require verification of circuit behavior.

Q: Why is the FST16232MTDX obsolete?

A: onsemi has discontinued this product line. The SN74CBT16232DGGR from Texas Instruments provides equivalent functionality with active production status.

Q: Are there any compliance differences between the two parts?

A: The SN74CBT16232DGGR is ROHS3 compliant, meeting current environmental regulations. Both parts have identical REACH status and are classified as REACH Unaffected.

Q: What is the moisture sensitivity level for these components?

A: Both parts have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Are there packaging format differences?

A: The FST16232MTDX is available in standard packaging, while the SN74CBT16232DGGR is supplied in Tape & Reel (TR) format. Both use identical 56-TSSOP component packaging suitable for automated assembly.