TSH72CPT Equivalent & Substitute Parts

Part Overview

The TSH72CPT is a general-purpose operational amplifier manufactured by STMicroelectronics, featuring dual circuits in an 8-TSSOP surface-mount package. This device is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity. The TSH72CPT delivers rail-to-rail output capability with a 65 MHz gain-bandwidth product and operates across a 3V to 12V supply range, making it suitable for general-purpose amplification applications in consumer and industrial electronics.

Substiute Parts

TSH72CPT

STMicroelectronicsIn Stock: 29485TSH72CPT Datasheet

Current PartRFQ

OP279GRUZ-REEL

Analog Devices Inc.In Stock: 1691OP279GRUZ-REEL Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TSH72CPT is determined by the following critical parameters that must align with the original design requirements:

Package Compatibility: The 8-TSSOP surface-mount package is the primary mechanical constraint. Substitute components must utilize the identical 8-TSSOP package to ensure PCB layout compatibility without redesign.

Functional Classification: The TSH72CPT operates as a general-purpose amplifier with dual circuits. Substitute parts must provide equivalent amplification functionality with matching circuit count (2 circuits minimum).

Output Configuration: Rail-to-rail output capability is a core electrical requirement. Substitute components must support rail-to-rail output to maintain signal swing characteristics in the original application.

Supply Voltage Range: The device operates across 3V to 12V. Substitute parts must support this supply range or a compatible superset to function in existing power distribution architectures.

Electrical Performance: Key performance metrics including gain-bandwidth product, slew rate, input bias current, and output current drive capability determine functional equivalence. Substitute parts with comparable or superior performance characteristics maintain design margin.

Compliance & Status: RoHS3 compliance and active product status ensure long-term availability and regulatory alignment for new designs and production continuity.

The OP279GRUZ-REEL from Analog Devices Inc. is identified as a substitute component based on shared mechanical packaging, dual-circuit configuration, rail-to-rail output, and compatible supply voltage specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration: Product Status

The TSH72CPT is classified as obsolete, creating supply chain risk for ongoing production and maintenance. The OP279GRUZ-REEL maintains active product status with Analog Devices Inc., ensuring continued availability and manufacturing support.

Compliance & Regulatory Alignment

Both the TSH72CPT and OP279GRUZ-REEL are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement and deployment in regulated markets.

Mechanical Compatibility

Both components utilize the 8-TSSOP surface-mount package with identical physical dimensions (0.173", 4.40mm width). This packaging equivalence permits direct PCB layout compatibility without redesign or rework.

Functional Capability

The OP279GRUZ-REEL provides dual-circuit, rail-to-rail amplification in the same package footprint. However, the substitute exhibits reduced electrical performance compared to the original part: gain-bandwidth product of 5 MHz versus 65 MHz, and slew rate of 3 V/µs versus 118 V/µs. These performance differences classify the OP279GRUZ-REEL as a functional substitute suitable for applications where the lower bandwidth and slew rate specifications are acceptable.

Supply Voltage Compatibility

The OP279GRUZ-REEL minimum supply voltage is 4.5V, compared to 3V for the TSH72CPT. Applications requiring operation at 3V supply voltage cannot use this substitute without circuit modification.

Selection Guidance

Select the OP279GRUZ-REEL as a substitute when: (1) application supply voltage is 4.5V or higher, (2) bandwidth requirements do not exceed 5 MHz, (3) slew rate requirements do not exceed 3 V/µs, and (4) long-term component availability is prioritized over performance equivalence. For applications requiring the full performance envelope of the TSH72CPT, alternative general-purpose dual-amplifier components in 8-TSSOP packaging must be evaluated.

Frequently Asked Questions (FAQ)

Q: Can the OP279GRUZ-REEL be used as a direct replacement for the TSH72CPT without circuit modification?

A: The OP279GRUZ-REEL shares the 8-TSSOP package and pinout compatibility with the TSH72CPT, permitting direct PCB placement. However, the reduced gain-bandwidth product (5 MHz versus 65 MHz) and slew rate (3 V/µs versus 118 V/µs) may affect circuit performance. Applications designed for the TSH72CPT's higher bandwidth and slew rate specifications require functional verification before production deployment.

Q: What is the minimum supply voltage requirement for the OP279GRUZ-REEL?

A: The OP279GRUZ-REEL operates at a minimum supply voltage of 4.5V, compared to 3V for the TSH72CPT. Designs requiring 3V operation cannot use this substitute without implementing a voltage boost circuit or selecting an alternative component.

Q: Are both components RoHS compliant?

A: Both the TSH72CPT and OP279GRUZ-REEL are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement in regulated markets.

Q: What is the primary reason for substituting the TSH72CPT?

A: The TSH72CPT is classified as obsolete, creating supply chain discontinuity. The OP279GRUZ-REEL maintains active product status, ensuring continued manufacturing availability and long-term supply security.

Q: How do the input bias current specifications compare?

A: The TSH72CPT specifies 6 µA input bias current, while the OP279GRUZ-REEL specifies 300 nA. The substitute exhibits significantly lower input bias current, which may improve performance in high-impedance signal conditioning applications but requires verification in existing circuit designs.

Q: Are the operating temperature ranges compatible?

A: The TSH72CPT operates across 0°C to 70°C, while the OP279GRUZ-REEL operates across -40°C to 85°C. The substitute provides an extended temperature range, suitable for applications requiring operation below 0°C or above 70°C.

Q: What packaging format is used for both components?

A: Both the TSH72CPT and OP279GRUZ-REEL are supplied in 8-TSSOP surface-mount packages with identical physical dimensions (0.173", 4.40mm width), ensuring PCB layout compatibility without modification.