TSH173ID Equivalent & Substitute Parts

Part Overview

The TSH173ID is a linear video amplifier buffer integrated circuit manufactured by STMicroelectronics in an 8-SOIC surface mount package. This device functions as a three-channel buffer amplifier designed for video signal applications. The TSH173ID is classified as an obsolete product, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility while meeting current component availability and compliance standards.

Substiute Parts

TSH173ID

STMicroelectronicsIn Stock: 936TSH173ID Datasheet

Current PartRFQ

NCS2563DG

onsemiIn Stock: 2291NCS2563DG Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TSH173ID are identified based on the following critical parameters that determine functional and physical compatibility:

Package Compatibility: The substitute part must utilize the 8-SOIC (0.154", 3.90mm Width) surface mount package to ensure PCB layout compatibility and assembly process alignment.

Circuit Configuration: The substitute part must provide three independent circuits to match the multi-channel buffer architecture of the TSH173ID.

Supply Voltage Range: The substitute part must operate within or overlap the 4.5V to 5.5V supply voltage specification to ensure compatibility with existing power distribution systems.

Output Current Capability: The substitute part must support minimum output current per channel of 38 mA to meet signal driving requirements.

Compliance Standards: The substitute part must maintain ROHS3 compliance and MSL 1 rating to satisfy regulatory and manufacturing requirements.

The NCS2563DG from onsemi meets these substitution criteria while offering enhanced performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

The NCS2563DG from onsemi serves as a direct substitute for the obsolete TSH173ID based on the following engineering criteria:

Physical Compatibility: Both devices utilize identical 8-SOIC packaging, enabling direct PCB footprint compatibility without layout modifications.

Electrical Compatibility: The NCS2563DG operates within the overlapping supply voltage range of 4.75V to 5.25V, which falls within the TSH173ID specification of 4.5V to 5.5V. The substitute device provides output current capability of 50 mA per channel, exceeding the TSH173ID requirement of 38 mA per channel.

Regulatory Compliance: The NCS2563DG maintains ROHS3 compliance and MSL 1 rating, matching the compliance profile of the TSH173ID and satisfying manufacturing and environmental requirements.

Product Availability: The NCS2563DG holds active product status with current manufacturing support, ensuring long-term component availability and supply chain continuity compared to the obsolete TSH173ID.

Performance Enhancement: The NCS2563DG provides a -3dB bandwidth of 33 MHz compared to the TSH173ID specification of 8.2 MHz, delivering superior frequency response characteristics for video signal applications.

Frequently Asked Questions (FAQ)

Q: Can the NCS2563DG be used as a direct replacement for the TSH173ID without PCB modifications?

A: Yes. Both devices share identical 8-SOIC packaging dimensions (0.154", 3.90mm Width) and three-circuit configuration, enabling direct footprint compatibility without PCB layout changes.

Q: What is the supply voltage compatibility between the TSH173ID and NCS2563DG?

A: The TSH173ID operates at 4.5V to 5.5V, while the NCS2563DG operates at 4.75V to 5.25V. The overlapping range of 4.75V to 5.25V ensures compatibility when systems operate within this voltage window. Systems operating below 4.75V or above 5.25V require voltage verification before substitution.

Q: Does the NCS2563DG meet the same compliance standards as the TSH173ID?

A: Yes. Both devices are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, satisfying identical regulatory and manufacturing requirements.

Q: How do the output current specifications compare?

A: The TSH173ID provides 38 mA per channel output current, while the NCS2563DG provides 50 mA per channel. The NCS2563DG exceeds the minimum requirement, supporting equivalent or higher signal driving capability.

Q: What is the significance of the bandwidth difference between these devices?

A: The TSH173ID specifies 8.2 MHz -3dB bandwidth, while the NCS2563DG specifies 33 MHz. The NCS2563DG provides enhanced frequency response suitable for higher-bandwidth video signal applications. Applications limited to 8.2 MHz bandwidth operate within the NCS2563DG capability range.

Q: Is the higher supply current of the NCS2563DG a concern?

A: The NCS2563DG draws 22 mA supply current compared to the TSH173ID at 7.4 mA. Power supply design must accommodate this increased current draw. Systems with adequate power supply capacity experience no functional impact.

Q: Are there any application-specific considerations for substitution?

A: Substitution is appropriate for buffer and video amplifier applications utilizing the three-channel configuration. Applications requiring the specific 8.2 MHz bandwidth limitation of the TSH173ID should verify that the enhanced 33 MHz bandwidth of the NCS2563DG does not introduce unintended signal characteristics in the application circuit.