TSV321ID Equivalent & Substitute Parts

Part Overview

The TSV321ID 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 low-power analog signal processing applications. The TSV321ID is classified as obsolete, necessitating identification of active equivalent alternatives that maintain functional compatibility across key electrical and mechanical parameters. Substitute parts must satisfy identical packaging requirements, supply voltage ranges, and operational temperature specifications to ensure direct replacement capability.

Substiute Parts

TSV321ID

STMicroelectronicsIn Stock: 1175TSV321ID Datasheet

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MCP6271-E/SN

Microchip TechnologyIn Stock: 5447MCP6271-E/SN Datasheet

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TLV2471CD

Texas InstrumentsIn Stock: 2138TLV2471CD Datasheet

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TLV2471CDR

Texas InstrumentsIn Stock: 971TLV2471CDR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TSV321ID are selected based on strict equivalence across the following critical parameters:

Mechanical Compatibility:

• Package type: 8-SOIC (0.154", 3.90mm Width)
• Mounting type: Surface Mount
• Moisture sensitivity level: 1 (Unlimited)

Electrical Compatibility:

• Amplifier type: General Purpose
• Number of circuits: 1
• Output type: Rail-to-Rail
• Supply voltage range: Minimum 2.5 V, Maximum 6 V
• Operating temperature range: -40°C ~ 125°C

Regulatory Compliance:

• RoHS3 Compliant
• REACH Unaffected
• ECCN: EAR99

All substitute parts listed maintain identical package geometry, electrical classification, and regulatory compliance status. Differences in performance characteristics such as slew rate, gain bandwidth product, input bias current, and output current capacity do not preclude substitution when the application requirements fall within the specified ranges of both the original and substitute devices.

Parameter Comparison

Engineering Selection Recommendations

MCP6271-E/SN (Microchip Technology): This substitute maintains full compatibility with the TSV321ID across all critical mechanical and electrical parameters. The MCP6271-E/SN is an active product with ROHS3 compliance and identical operating temperature range (-40°C ~ 125°C). The device offers improved performance characteristics including higher slew rate (0.9 V/µs versus 0.6 V/µs) and superior input bias current specification (1 pA versus 70 nA). Supply voltage range extends to 2 V minimum, providing broader operational flexibility. Current supply consumption is reduced to 170 µA, benefiting power-constrained applications. Output current per channel is specified at 25 mA, which is lower than the original device but remains suitable for standard signal conditioning applications. Packaging is supplied in tube format.

TLV2471CD (Texas Instruments): This substitute provides mechanical and electrical compatibility with identical 8-SOIC package geometry and surface mount configuration. The TLV2471CD is an active product with ROHS3 compliance. Performance enhancements include slew rate of 1.5 V/µs and gain bandwidth product of 2.8 MHz. Input offset voltage specification is 250 µV, comparable to the original device. Operating temperature range is restricted to 0°C ~ 70°C, which is narrower than the TSV321ID specification of -40°C ~ 125°C. Minimum supply voltage is 2.7 V, which is higher than the original 2.5 V specification. Packaging is supplied in tube format.

TLV2471CDR (Texas Instruments): This substitute is electrically and mechanically identical to the TLV2471CD, with the primary distinction being packaging format. The TLV2471CDR is supplied in Tape & Reel (TR) format, suitable for automated assembly processes. All electrical specifications, compliance certifications, and performance characteristics are equivalent to the TLV2471CD variant. Operating temperature range remains 0°C ~ 70°C, and minimum supply voltage is 2.7 V.

Selection Criteria:

• For applications requiring extended operating temperature range (-40°C ~ 125°C), the MCP6271-E/SN is the appropriate selection.
• For applications operating within 0°C ~ 70°C temperature range with minimum supply voltage of 2.7 V or higher, either TLV2471CD or TLV2471CDR provides suitable substitution.
• For high-volume automated assembly, TLV2471CDR in Tape & Reel format is preferred over tube packaging.
• For applications requiring minimum supply voltage of 2.5 V, only MCP6271-E/SN maintains full compatibility.

Frequently Asked Questions (FAQ)

Q: Can the MCP6271-E/SN replace the TSV321ID in all applications?

A: The MCP6271-E/SN maintains compatibility across all critical mechanical and electrical parameters. The device supports the full operating temperature range (-40°C ~ 125°C) and minimum supply voltage (2 V) of the original specification. Performance characteristics exceed the original device in slew rate and input bias current. Substitution is valid for all applications within the specified electrical and thermal operating conditions.

Q: What is the primary limitation of the TLV2471CD and TLV2471CDR substitutes?

A: The operating temperature range of both TLV2471CD and TLV2471CDR is restricted to 0°C ~ 70°C, compared to the TSV321ID specification of -40°C ~ 125°C. Additionally, the minimum supply voltage is specified at 2.7 V, which is higher than the original 2.5 V minimum. These devices are suitable only for applications that operate within these narrower specifications.

Q: Are the TLV2471CD and TLV2471CDR electrically identical?

A: Yes. The TLV2471CD and TLV2471CDR are electrically identical devices. The distinction is packaging format: TLV2471CD is supplied in tube packaging, while TLV2471CDR is supplied in Tape & Reel (TR) format. Selection between these variants depends on assembly process requirements and inventory management practices.

Q: Does the lower output current specification of the MCP6271-E/SN affect substitution validity?

A: The MCP6271-E/SN specifies output current per channel at 25 mA, compared to 80 mA for the TSV321ID. Substitution validity depends on application load requirements. If the application load current does not exceed 25 mA, the MCP6271-E/SN is a valid substitute. Applications requiring output currents between 25 mA and 80 mA require evaluation of the specific load characteristics and may necessitate external buffering or alternative device selection.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed—MCP6271-E/SN, TLV2471CD, and TLV2471CDR—are ROHS3 compliant with MSL rating of 1 (Unlimited). Regulatory compliance is maintained across all substitution options.

Q: What is the significance of the 8-SOIC package specification?

A: The 8-SOIC (0.154", 3.90mm Width) package is a standardized surface mount integrated circuit package. All substitute parts maintain identical package geometry, ensuring direct physical compatibility with existing printed circuit board layouts. No PCB redesign or component footprint modification is required for substitution.

Q: Can the TSV321ID be used as a substitute for the listed alternatives?

A: No. The TSV321ID is classified as obsolete and is not recommended for new designs. While the device may be functionally compatible with applications designed for the substitute parts, the obsolete status and limited availability (1071 pieces in stock) make it unsuitable as a forward-compatible alternative. New designs should utilize active products: MCP6271-E/SN, TLV2471CD, or TLV2471CDR.