TSH343IDT Equivalent & Substitute Parts

Part Overview

The TSH343IDT is a linear video amplifier buffer integrated circuit manufactured by STMicroelectronics in an 8-SOIC surface mount package. This device contains three buffer circuits designed for video signal conditioning applications. The part is currently in active production status with 1629 units in stock inventory.

Substitute parts are identified when equivalent functional performance can be achieved within the specified electrical and mechanical parameters. Alternative models may be required due to inventory availability, packaging format preferences, or specific application voltage and current requirements.

Substiute Parts

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

Substitute parts for the TSH343IDT are identified based on the following critical parameters:

Package Compatibility: All substitute parts must use the 8-SOIC (0.154", 3.90mm Width) surface mount package to ensure mechanical and electrical compatibility with existing PCB layouts.

Circuit Configuration: The TSH343IDT contains three buffer circuits. Substitute parts are grouped by circuit count: three-circuit buffers (THS7314D, THS7314DR, THS7316D, THS7316DR) are direct functional equivalents, while single-circuit buffers (THS7315D, THS7315DR) represent a different circuit configuration.

Voltage Supply Range: The TSH343IDT operates across 3V to 5.5V. Substitute parts must support overlapping or equivalent voltage ranges. THS7314 and THS7316 series support 2.85V to 5.5V, providing extended low-voltage capability. The NCS2563DG operates within 4.75V to 5.25V, a narrower range suitable for fixed 5V supply applications.

Output Current Capability: The TSH343IDT provides 90 mA per channel output current. THS7314D and THS7314DR provide 70 mA per channel, while THS7315D, THS7315DR, THS7316D, and THS7316DR maintain the 90 mA specification. The NCS2563DG provides 50 mA per channel.

Bandwidth Performance: The TSH343IDT specifies 280 MHz bandwidth. THS7316 series provides 36 MHz, THS7314 series does not specify bandwidth, THS7315 series provides 8.5 MHz, and NCS2563DG provides 33 MHz. Bandwidth selection depends on application requirements.

Regulatory Compliance: All substitute parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 ECCN classification, ensuring regulatory equivalence.

Parameter Comparison

Engineering Selection Recommendations

Three-Circuit Buffer Applications: For applications requiring three buffer circuits with 90 mA output current per channel, the THS7316D and THS7316DR (Texas Instruments) provide equivalent circuit configuration and output current capability. These parts support the full voltage range of 2.85V to 5.5V and maintain active product status with high inventory availability (35200 and 41266 units respectively).

Extended Voltage Range Requirements: Applications operating below 3V benefit from THS7314D, THS7314DR, THS7316D, or THS7316DR, which support operation down to 2.85V. These parts are suitable when the TSH343IDT's 3V minimum is insufficient.

Fixed 5V Supply Applications: The NCS2563DG (onsemi) operates within the narrower 4.75V to 5.25V range and is suitable for fixed 5V supply systems. This part maintains three-circuit configuration but provides reduced output current (50 mA per channel) and lower bandwidth (33 MHz).

Packaging Format Selection: THS7314D and THS7316D are supplied in Tube packaging, while THS7314DR and THS7316DR are supplied in Cut Tape (CT) & Digi-Reel® or Tape & Reel (TR) formats. The TSH343IDT is supplied in Cut Tape (CT) & Digi-Reel® format. Packaging selection depends on assembly process requirements.

Moisture Sensitivity Considerations: The TSH343IDT specifies MSL 1 (Unlimited), while all Texas Instruments substitutes specify MSL 2 (1 Year). The NCS2563DG matches the MSL 1 specification. Applications with extended storage or high-humidity environments should account for moisture sensitivity level differences.

Regulatory Compliance: All substitute parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 ECCN classification, ensuring regulatory equivalence to the TSH343IDT.

Frequently Asked Questions (FAQ)

Q: Can THS7315D or THS7315DR be used as direct substitutes for TSH343IDT?

A: No. The THS7315D and THS7315DR contain only one buffer circuit, while the TSH343IDT contains three circuits. These parts are not functionally equivalent for applications requiring three independent buffer channels.

Q: What is the primary difference between THS7314 and THS7316 series?

A: The THS7316 series provides 36 MHz bandwidth and 19.3 mA supply current, while the THS7314 series does not specify bandwidth and requires 16 mA supply current. The THS7316 series is suitable for higher-frequency video applications.

Q: Is the NCS2563DG suitable for all TSH343IDT applications?

A: The NCS2563DG is suitable only for applications operating within the 4.75V to 5.25V voltage range and requiring no more than 50 mA output current per channel. Applications requiring the full 3V to 5.5V range or 90 mA output current require alternative substitutes.

Q: What is the impact of MSL 2 (1 Year) versus MSL 1 (Unlimited)?

A: MSL 2 (1 Year) indicates the component must be used within one year of the manufacturing date if exposed to moisture. MSL 1 (Unlimited) has no time restriction. Applications with extended storage periods should prioritize MSL 1 rated parts or implement appropriate moisture control measures.

Q: Are all substitute parts available in the same packaging format as TSH343IDT?

A: The TSH343IDT is supplied in Cut Tape (CT) & Digi-Reel® format. THS7314DR and THS7316DR are available in Cut Tape (CT) & Digi-Reel® or Tape & Reel (TR) formats. THS7314D and THS7316D are supplied in Tube format. Packaging format selection depends on assembly equipment compatibility.

Q: Can THS7314D be used in applications requiring 90 mA output current per channel?

A: No. The THS7314D provides only 70 mA output current per channel, which is insufficient for applications requiring the full 90 mA specification of the TSH343IDT. Use THS7315D, THS7315DR, THS7316D, or THS7316DR for 90 mA output current applications.

Q: What bandwidth performance is required for video buffer applications?

A: Bandwidth requirements depend on the specific video standard and signal frequency. The TSH343IDT provides 280 MHz bandwidth suitable for high-speed video applications. THS7316 series provides 36 MHz, suitable for standard video frequencies. THS7315 series provides 8.5 MHz, suitable for lower-frequency applications. Application requirements determine appropriate bandwidth selection.