TSH71CDT Equivalent & Substitute Parts

Part Overview

The TSH71CDT is a general-purpose operational amplifier manufactured by STMicroelectronics, housed in an 8-SOIC surface-mount package. This device features rail-to-rail output capability and is designed for linear amplification applications requiring moderate bandwidth and slew rate performance. The TSH71CDT is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.

Substiute Parts

TSH71CDT

STMicroelectronicsIn Stock: 3560TSH71CDT Datasheet

Current PartRFQ

LT1806CS8#PBF

Analog Devices Inc.In Stock: 2152LT1806CS8#PBF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TSH71CDT is determined by functional equivalence across the following critical parameters:

Functional Equivalence Criteria:

• Single-circuit general-purpose operational amplifier architecture
• Rail-to-rail output configuration
• 8-SOIC surface-mount package with identical physical dimensions (0.154", 3.90mm width)
• Operating temperature range of 0°C to 70°C
• Supply voltage compatibility within the 3 V to 12 V span
• RoHS3 compliance and REACH unaffected status

Performance Considerations: Substitute parts must maintain compatibility with existing PCB layouts and socket configurations. The electrical performance parameters (slew rate, gain bandwidth product, input bias current, and output current capability) define the operational envelope within which substitutes function. Parts exceeding the specified performance parameters remain functionally compatible for applications designed around the TSH71CDT baseline specifications.

Parameter Comparison

Engineering Selection Recommendations

The LT1806CS8#PBF from Analog Devices Inc. is a direct substitute for the obsolete TSH71CDT. Both devices share identical package geometry (8-SOIC), operating temperature range (0°C to 70°C), and regulatory compliance status (RoHS3 compliant, REACH unaffected). The LT1806CS8#PBF maintains active product status, ensuring long-term availability and supply chain continuity.

The LT1806CS8#PBF demonstrates enhanced electrical performance across multiple parameters: slew rate of 140 V/µs exceeds the TSH71CDT specification of 118 V/µs; gain bandwidth product of 325 MHz significantly exceeds 65 MHz; input offset voltage of 100 µV improves upon 800 µV; and input bias current of 5 µA is lower than 6 µA. These performance improvements are compatible with applications designed for the TSH71CDT baseline specifications.

Supply voltage compatibility is maintained, with the LT1806CS8#PBF supporting a minimum supply voltage of 2.5 V (lower than the TSH71CDT minimum of 3 V) and maximum of 12.6 V (higher than the TSH71CDT maximum of 12 V), providing expanded operational flexibility.

Frequently Asked Questions (FAQ)

Q: Can the LT1806CS8#PBF directly replace the TSH71CDT without PCB modifications?

A: Yes. Both devices utilize identical 8-SOIC package geometry with 0.154" (3.90mm) width, enabling direct pin-compatible substitution on existing PCB layouts without physical modifications.

Q: Are there differences in supply voltage requirements between these parts?

A: The LT1806CS8#PBF operates across a wider supply voltage range (2.5 V to 12.6 V) compared to the TSH71CDT (3 V to 12 V). Applications designed for the TSH71CDT operate within the LT1806CS8#PBF specification envelope.

Q: How do the performance specifications compare?

A: The LT1806CS8#PBF exceeds TSH71CDT performance across slew rate, gain bandwidth product, and input offset voltage. These enhancements maintain backward compatibility with designs specified for the TSH71CDT.

Q: What is the significance of the obsolete status of the TSH71CDT?

A: Obsolete status indicates the TSH71CDT is no longer manufactured by STMicroelectronics. The LT1806CS8#PBF, with active product status, provides a functionally equivalent alternative with assured long-term availability.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the TSH71CDT and LT1806CS8#PBF are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What packaging formats are available for the LT1806CS8#PBF?

A: The LT1806CS8#PBF is supplied in Tube packaging, whereas the TSH71CDT was supplied in Tape & Reel format. Both formats contain identical die and electrical specifications.