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TSH103ID Equivalent & Substitute Parts
Part Overview
The TSH103ID is a linear video amplifier buffer integrated circuit manufactured by STMicroelectronics in 8-SOIC surface mount packaging. This device contains three buffer circuits designed for video signal conditioning applications. The TSH103ID is classified as obsolete, which necessitates identification of functionally equivalent active alternatives for new designs and ongoing production requirements. Substitute parts must maintain compatibility with the original electrical specifications and physical package dimensions while offering active product status and continued manufacturer support.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | TSH103ID |
| Manufacturer | STMicroelectronics |
| Category | Linear, Amplifiers |
| Description | IC AMP BUFFER 8SO |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Number of Circuits | 3 |
| -3dB Bandwidth | 9.4 MHz |
| Current - Supply | 5.5 mA |
| Current - Output / Channel | 56 mA |
| Voltage - Supply, Single/Dual (±) | 4.5V ~ 5.5V |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the TSH103ID are selected based on the following critical parameters that determine functional equivalence:
Package Compatibility: All substitute parts must use the 8-SOIC (0.154", 3.90mm Width) surface mount package to ensure direct board-level compatibility without layout modifications.
Circuit Configuration: The TSH103ID contains three buffer circuits. Substitute parts are grouped by circuit count: three-circuit devices (THS7314D, THS7314DR, THS7316D, THS7316DR, NCS2563DG) provide direct functional replacement, while single-circuit devices (THS7315D, THS7315DR) serve applications requiring reduced circuit density.
Supply Voltage Range: The TSH103ID operates from 4.5V to 5.5V. Substitute parts with overlapping or extended voltage ranges (2.85V ~ 5.5V for THS7314 and THS7316 series, 2.85V ~ 5.25V for THS7315 series, 4.75V ~ 5.25V for NCS2563DG) maintain compatibility within the original operating envelope.
Application Type: The TSH103ID functions as a buffer amplifier. All substitute parts are classified as buffer or filter amplifiers suitable for video signal conditioning.
Regulatory Compliance: All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the original part's environmental certifications.
Product Status: Active substitute parts ensure ongoing availability and manufacturer support, addressing the obsolescence of the original TSH103ID.
Parameter Comparison
| Parameter | TSH103ID | THS7314D | THS7314DR | THS7315D | THS7315DR | THS7316D | THS7316DR | NCS2563DG |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | STMicroelectronics | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | onsemi |
| Package / Case | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Number of Circuits | 3 | 3 | 3 | 1 | 1 | 3 | 3 | 3 |
| -3dB Bandwidth (MHz) | 9.4 | Not Specified | Not Specified | 8.5 | 8.5 | 36 | 36 | 33 |
| Current - Supply (mA) | 5.5 | 16 | 16 | 16.5 | 16.5 | 19.3 | 19.3 | 22 |
| Current - Output / Channel (mA) | 56 | 70 | 70 | 90 | 90 | 90 | 90 | 50 |
| Voltage - Supply, Single/Dual (±) (V) | 4.5 ~ 5.5 | 2.85 ~ 5.5 | 2.85 ~ 5.5 | 2.85 ~ 5.25 | 2.85 ~ 5.25 | 2.85 ~ 5.5 | 2.85 ~ 5.5 | 4.75 ~ 5.25 |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 2 (1 Year) | 2 (1 Year) | 2 (1 Year) | 2 (1 Year) | 2 (1 Year) | 2 (1 Year) | 1 (Unlimited) |
Engineering Selection Recommendations
Direct Three-Circuit Buffer Replacement: The THS7314D, THS7314DR, THS7316D, and THS7316DR devices from Texas Instruments provide three-circuit buffer configurations matching the TSH103ID circuit count. These parts maintain active product status and ROHS3 compliance. The THS7314 series operates with extended supply voltage range (2.85V ~ 5.5V) and provides rail-to-rail output capability. The THS7316 series offers higher bandwidth (36 MHz) compared to the original 9.4 MHz specification. Both series are available in tube (D suffix) and tape & reel (DR suffix) packaging options.
Alternative Three-Circuit Configuration: The NCS2563DG from onsemi provides a three-circuit filter amplifier in 8-SOIC packaging with active product status. This device operates within the 4.75V ~ 5.25V supply range, overlapping the original TSH103ID specification. The NCS2563DG features 33 MHz bandwidth and maintains MSL 1 moisture sensitivity rating identical to the original part.
Single-Circuit Alternative: The THS7315D and THS7315DR devices provide single-circuit buffer configurations for applications where reduced circuit density is acceptable. These parts feature 8.5 MHz bandwidth closely matching the original 9.4 MHz specification and operate across the 2.85V ~ 5.25V supply range.
Packaging Considerations: Texas Instruments THS7314, THS7315, and THS7316 series parts are available in tube (D suffix) and tape & reel (DR suffix) packaging. The NCS2563DG is supplied in digi-reel packaging. Selection between packaging options depends on production volume and assembly process requirements.
Compliance Status: All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory equivalence with the original TSH103ID.
Frequently Asked Questions (FAQ)
Q: Can THS7314D or THS7314DR directly replace TSH103ID in existing designs?
A: Yes. The THS7314D and THS7314DR provide three-circuit buffer configurations in identical 8-SOIC packaging. Both parts operate within the TSH103ID supply voltage range (4.5V ~ 5.5V falls within their 2.85V ~ 5.5V specification) and maintain ROHS3 compliance. Output current per channel (70 mA) exceeds the original specification (56 mA), providing additional drive capability. These parts are available in active product status with established manufacturer support.
Q: What is the difference between THS7314D and THS7314DR?
A: Both parts are electrically identical Texas Instruments THS7314 buffer amplifiers in 8-SOIC packaging. The primary difference is packaging format: THS7314D is supplied in tube packaging, while THS7314DR is supplied in cut tape and digi-reel format. Selection depends on production volume and assembly equipment compatibility.
Q: Why does THS7316D have higher bandwidth (36 MHz) than TSH103ID (9.4 MHz)?
A: The THS7316D is a higher-performance variant within the Texas Instruments buffer amplifier family. The increased bandwidth specification does not prevent its use as a substitute for the TSH103ID. Applications requiring the original 9.4 MHz bandwidth specification operate within the THS7316D capability. The higher bandwidth provides additional performance margin for signal conditioning applications.
Q: Is NCS2563DG suitable for TSH103ID replacement?
A: The NCS2563DG from onsemi provides three-circuit amplification in 8-SOIC packaging with active product status. However, this device is classified as a filter amplifier rather than a buffer amplifier. The NCS2563DG operates within the overlapping supply voltage range (4.75V ~ 5.25V intersects with TSH103ID 4.5V ~ 5.5V) and maintains MSL 1 moisture sensitivity. Application-specific evaluation is required to confirm functional compatibility with filter versus buffer circuit topology.
Q: Can THS7315D replace TSH103ID in applications requiring three circuits?
A: The THS7315D provides only one buffer circuit, while the TSH103ID contains three circuits. Direct replacement in applications requiring three independent buffer channels is not possible with THS7315D. Multiple THS7315D devices would be required to achieve equivalent circuit density, increasing board space and component count.
Q: What is the significance of MSL rating differences between TSH103ID and substitute parts?
A: The TSH103ID carries MSL 1 (unlimited moisture sensitivity level), while most Texas Instruments substitutes (THS7314, THS7315, THS7316 series) carry MSL 2 (1 year). MSL 2 requires controlled storage conditions and limits shelf life to one year from manufacturing date. The NCS2563DG maintains MSL 1 rating matching the original part. MSL rating selection depends on inventory management practices and production scheduling.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All substitute parts listed (THS7314D, THS7314DR, THS7315D, THS7315DR, THS7316D, THS7316DR, and NCS2563DG) maintain ROHS3 compliance and REACH unaffected status, matching the environmental certifications of the original TSH103ID.
Q: What supply current differences exist between TSH103ID and substitute parts?
A: The TSH103ID draws 5.5 mA supply current, while substitute parts draw higher currents: THS7314 and THS7315 series draw 16-16.5 mA, THS7316 series draws 19.3 mA, and NCS2563DG draws 22 mA. These increased supply currents reflect enhanced performance characteristics in the substitute devices. Power supply design must accommodate the higher current requirements of selected substitute parts.
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