OP279GSZ-REEL Equivalent & Substitute Parts

Part Overview

The OP279GSZ-REEL is a buffer amplifier integrated circuit manufactured by Analog Devices Inc., designed for rail-to-rail signal conditioning applications. This 2-circuit buffer amplifier operates across a 4.5V to 12V supply range and is housed in an 8-SOIC surface mount package. The device is currently in active production status with substantial inventory availability (17,290 pieces in stock).

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be achieved within the specified parameter ranges. The OP279GSZ-REEL serves as a reference point for identifying alternative components that meet the same functional requirements while maintaining package compatibility and operating characteristics.

Substiute Parts

OP279GSZ-REEL

Analog Devices Inc.In Stock: 17393OP279GSZ-REEL Datasheet

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MCP6H82-E/SN

Microchip TechnologyIn Stock: 1356MCP6H82-E/SN Datasheet

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TSH22IDT

STMicroelectronicsIn Stock: 37932TSH22IDT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the OP279GSZ-REEL are identified based on the following critical parameters that determine functional and mechanical compatibility:

Package Compatibility: All substitute parts must use the 8-SOIC (0.154", 3.90mm Width) surface mount package to ensure direct PCB layout compatibility.

Circuit Configuration: Substitute parts must contain 2 circuits to match the dual-channel architecture of the OP279GSZ-REEL.

Supply Voltage Range: Substitute parts must operate within or encompass the 4.5V to 12V supply span of the main part. Parts with extended supply ranges (lower minimum or higher maximum) are acceptable as they maintain backward compatibility.

Output Characteristics: Rail-to-rail output capability is a primary substitution criterion. Parts with unspecified output type are evaluated based on other electrical parameters.

Electrical Performance: Slew rate, gain bandwidth product, input bias current, input offset voltage, and output current per channel are evaluated to ensure the substitute part meets or exceeds the performance envelope of the OP279GSZ-REEL within the specified operating conditions.

Regulatory Compliance: All substitute parts must maintain ROHS3 compliance and MSL 1 rating to ensure compatibility with standard manufacturing and storage requirements.

Parameter Comparison

Engineering Selection Recommendations

OP279GSZ-REEL (Primary Component): This part is the active production reference device. It is ROHS3 compliant with MSL 1 rating and maintains full regulatory compliance. The OP279GSZ-REEL is recommended for new designs requiring buffer amplifier functionality within the 4.5V to 12V supply range and -40°C to 85°C operating temperature window.

MCP6H82-E/SN (Microchip Technology): This part is classified as obsolete and should not be selected for new designs or long-term production applications. Although it provides rail-to-rail output capability and meets the 8-SOIC package requirement, its discontinued status creates supply chain risk. The MCP6H82-E/SN exhibits superior electrical characteristics (lower input offset voltage of 1 mV versus 4 mV, higher slew rate of 5 V/µs versus 3 V/µs) and extended operating temperature range (-40°C to 125°C). However, these advantages are negated by product obsolescence. This part is suitable only for legacy system maintenance where existing inventory is available.

TSH22IDT (STMicroelectronics): This part is in active production status and is ROHS3 compliant with MSL 1 rating. The TSH22IDT is a general-purpose amplifier with 2 circuits in an 8-SOIC package. It demonstrates enhanced electrical performance characteristics including higher slew rate (15 V/µs), higher gain bandwidth product (25 MHz), lower input offset voltage (2.5 mV), and extended supply voltage range (3V to 30V). The TSH22IDT supports a wider operating temperature range (-40°C to 125°C) compared to the OP279GSZ-REEL. The output type is not specified in the available data. The TSH22IDT is suitable for applications requiring higher bandwidth and faster transient response within the OP279GSZ-REEL supply voltage envelope.

Frequently Asked Questions (FAQ)

Q: Can the MCP6H82-E/SN be used as a direct replacement for the OP279GSZ-REEL in new production?

A: No. The MCP6H82-E/SN is classified as obsolete and is not recommended for new designs or ongoing production. Although it shares the same 8-SOIC package and dual-circuit configuration, its discontinued status creates supply chain risk and limits long-term availability. The OP279GSZ-REEL or TSH22IDT are preferred alternatives for new applications.

Q: What are the key differences between the OP279GSZ-REEL and TSH22IDT?

A: Both parts use the 8-SOIC package and contain 2 circuits. The TSH22IDT offers higher slew rate (15 V/µs versus 3 V/µs), higher gain bandwidth product (25 MHz versus 5 MHz), lower input offset voltage (2.5 mV versus 4 mV), and extended supply voltage range (3V to 30V versus 4.5V to 12V). The TSH22IDT also supports a wider operating temperature range (-40°C to 125°C versus -40°C to 85°C). The OP279GSZ-REEL is specified as a buffer amplifier, while the TSH22IDT is a general-purpose amplifier. Both are ROHS3 compliant with MSL 1 rating.

Q: Are all substitute parts pin-compatible with the OP279GSZ-REEL?

A: All identified substitute parts use the 8-SOIC (0.154", 3.90mm Width) package, which ensures mechanical compatibility and identical PCB footprint. Pin-level functional compatibility must be verified against the specific application schematic and the detailed pinout documentation for each part.

Q: What is the significance of the rail-to-rail output specification?

A: Rail-to-rail output capability indicates that the amplifier output can swing to within a small margin of both the positive and negative supply rails. The OP279GSZ-REEL and MCP6H82-E/SN both specify rail-to-rail output. The TSH22IDT does not specify output type in the available data. This parameter is critical for applications requiring maximum output voltage swing within the supply voltage range.

Q: Can the TSH22IDT operate at the minimum supply voltage of the OP279GSZ-REEL?

A: Yes. The TSH22IDT supports a minimum supply voltage of 3V, which is lower than the OP279GSZ-REEL minimum of 4.5V. Therefore, the TSH22IDT can operate across the entire OP279GSZ-REEL supply voltage range (4.5V to 12V) and extends operation to lower voltages (3V to 4.5V) if required by the application.

Q: Are there any moisture sensitivity or RoHS compliance concerns with these substitute parts?

A: No. All three parts (OP279GSZ-REEL, MCP6H82-E/SN, and TSH22IDT) are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating. This ensures compatibility with standard PCB assembly processes and storage requirements without additional moisture control measures.

Q: What packaging formats are available for these parts?

A: The OP279GSZ-REEL is supplied in Tape & Reel (TR) format. The MCP6H82-E/SN is supplied in Tube format. The TSH22IDT is supplied in Cut Tape (CT) & Digi-Reel® format. All three parts use the same 8-SOIC package footprint but differ in bulk packaging configuration for manufacturing and distribution.