TSH343ID Equivalent & Substitute Parts

Part Overview

The TSH343ID is a linear video amplifier buffer integrated circuit manufactured by STMicroelectronics in an 8-SOIC surface mount package. This device contains three independent buffer circuits designed for video signal conditioning applications. The TSH343ID is classified as obsolete product status, which necessitates identification of equivalent and substitute components for ongoing design support and procurement continuity. Active alternative parts from both STMicroelectronics and Texas Instruments are available to fulfill the same functional requirements.

Substiute Parts

TSH343ID

STMicroelectronicsIn Stock: 1120TSH343ID Datasheet

Current PartRFQ

TSH343IDT

STMicroelectronicsIn Stock: 1645TSH343IDT Datasheet

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NCS2563DG

onsemiIn Stock: 2291NCS2563DG Datasheet

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THS7314D

Texas InstrumentsIn Stock: 35116THS7314D Datasheet

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THS7314DR

Texas InstrumentsIn Stock: 55384THS7314DR Datasheet

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THS7315D

Texas InstrumentsIn Stock: 1601THS7315D Datasheet

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THS7315DR

Texas InstrumentsIn Stock: 28252THS7315DR Datasheet

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THS7316D

Texas InstrumentsIn Stock: 35213THS7316D Datasheet

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THS7316DR

Texas InstrumentsIn Stock: 41296THS7316DR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TSH343ID is determined by the following critical parameters: package type (8-SOIC surface mount), number of circuits (3 independent buffers), supply voltage range compatibility (3V ~ 5.5V), and functional application classification (buffer amplifier).

The substitute parts are grouped into two categories:

Direct Equivalent (Same Manufacturer): TSH343IDT from STMicroelectronics maintains identical electrical specifications and functional characteristics as the TSH343ID, differing only in packaging format (Cut Tape & Digi-Reel® versus Tape & Reel) and product status (Active versus Obsolete).

Functional Equivalents (Alternative Manufacturers): Texas Instruments THS7314D, THS7314DR, THS7316D, and THS7316DR provide three-circuit buffer configurations in the same 8-SOIC package with compatible supply voltage ranges. These parts maintain the same mounting type and package dimensions, enabling direct physical substitution. The onsemi NCS2563DG is classified as a similar part but operates as a filter amplifier rather than a buffer amplifier and exhibits reduced bandwidth performance, limiting its substitution applicability.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitution: TSH343IDT is the recommended direct replacement for TSH343ID. This part maintains identical electrical performance specifications and functional characteristics while offering active product status and improved moisture sensitivity rating (MSL 1 versus MSL 3). Both parts are manufactured by STMicroelectronics and are ROHS3 compliant. The TSH343IDT is available in higher inventory quantities (1629 pcs) compared to the obsolete TSH343ID (1010 pcs).

Secondary Substitutions: THS7316D and THS7316DR from Texas Instruments provide functional equivalence for three-circuit buffer applications in the 8-SOIC package. These parts maintain compatible supply voltage ranges (2.85V ~ 5.5V encompasses the TSH343ID range of 3V ~ 5.5V) and identical output current capability (90 mA per channel). Both are active products with ROHS3 compliance and superior inventory availability (35200 pcs and 41266 pcs respectively). The reduced bandwidth specification (36 MHz versus 280 MHz) requires application-level evaluation for bandwidth-critical designs.

Alternative Consideration: THS7314D and THS7314DR offer three-circuit buffer configurations with active product status and ROHS3 compliance. These parts exhibit lower output current per channel (70 mA versus 90 mA) and require assessment for current-limited applications.

Not Recommended: THS7315D and THS7315DR contain only one circuit per package, making them unsuitable for direct substitution of the three-circuit TSH343ID. NCS2563DG operates as a filter amplifier rather than a buffer amplifier and exhibits reduced bandwidth and output current specifications, limiting substitution applicability.

Frequently Asked Questions (FAQ)

Q: Can TSH343IDT directly replace TSH343ID in existing designs?

A: Yes. TSH343IDT is the direct equivalent part from STMicroelectronics with identical electrical specifications, functional characteristics, and 8-SOIC package configuration. The only differences are packaging format (Cut Tape & Digi-Reel® versus Tape & Reel) and product status (Active versus Obsolete). No circuit modifications are required.

Q: What are the key differences between TSH343ID and THS7316D/THS7316DR?

A: Both part families provide three independent buffer circuits in 8-SOIC packages with compatible supply voltage ranges. The primary differences are: TSH343ID operates at 280 MHz bandwidth with 14.4 mA supply current, while THS7316D/THS7316DR operate at 36 MHz bandwidth with 19.3 mA supply current. THS7316D/THS7316DR are active products from Texas Instruments with superior inventory availability. Applications requiring the full 280 MHz bandwidth of the TSH343ID cannot use THS7316 variants.

Q: Why is THS7315D not suitable as a substitute?

A: THS7315D contains only one independent buffer circuit per package, whereas TSH343ID contains three circuits. Direct substitution would require three separate THS7315D packages to achieve equivalent functionality, resulting in increased board space, cost, and component count.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (TSH343IDT, THS7314D, THS7314DR, THS7316D, THS7316DR, THS7315D, THS7315DR, and NCS2563DG) are ROHS3 compliant, matching the compliance status of the original TSH343ID.

Q: What is the moisture sensitivity difference between TSH343ID and TSH343IDT?

A: TSH343ID has MSL 3 rating (168 hours maximum floor life), while TSH343IDT has MSL 1 rating (unlimited floor life). MSL 1 provides superior moisture tolerance and extended shelf life, reducing risk of moisture-induced failures during storage and handling.

Q: Can NCS2563DG from onsemi be used as a substitute?

A: NCS2563DG is not recommended as a direct substitute. While it shares the 8-SOIC package and three-circuit configuration, it functions as a filter amplifier rather than a buffer amplifier. Additionally, it exhibits significantly reduced bandwidth (33 MHz versus 280 MHz), lower output current per channel (50 mA versus 90 mA), and a narrower supply voltage range (4.75V ~ 5.25V versus 3V ~ 5.5V). Application-level compatibility must be verified before consideration.

Q: What packaging options are available for substitute parts?

A: TSH343IDT is available in Cut Tape & Digi-Reel® packaging. THS7314D and THS7316D are available in Tube packaging. THS7314DR and THS7316DR are available in Tape & Reel packaging. THS7315D is available in Tube packaging, and THS7315DR is available in Tape & Reel packaging. All parts use the same 8-SOIC physical package format, enabling direct board-level substitution regardless of tape/reel configuration.

Q: Are there supply voltage compatibility concerns when substituting with Texas Instruments parts?

A: Texas Instruments THS7314, THS7315, and THS7316 families support a lower minimum supply voltage (2.85V) compared to TSH343ID (3V minimum). This expanded lower range is backward compatible with TSH343ID applications. However, THS7315 variants have a maximum supply voltage of 5.25V, which is slightly lower than TSH343ID's 5.5V maximum. Designs operating at 5.5V supply voltage cannot use THS7315 variants.