TL971ID Equivalent & Substitute Parts

Part Overview

The TL971ID is a general-purpose operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device features rail-to-rail output capability and is designed for applications requiring low-power, single-circuit amplification across a wide supply voltage range. The TL971ID currently holds Last Time Buy status, indicating that Texas Instruments has discontinued this part number. Identifying equivalent and substitute components is necessary to ensure design continuity and maintain supply chain reliability for existing applications or new designs requiring comparable performance characteristics.

Substiute Parts

TL971ID

Texas InstrumentsIn Stock: 2218TL971ID Datasheet

Current PartRFQ

TL971IDR

Texas InstrumentsIn Stock: 9993TL971IDR Datasheet

MFR RecommendedRFQ

ADA4841-1YRZ

Analog Devices Inc.In Stock: 1333ADA4841-1YRZ Datasheet

MFR RecommendedRFQ

ADA4841-1YRZ-R7

Analog Devices Inc.In Stock: 1965ADA4841-1YRZ-R7 Datasheet

MFR RecommendedRFQ

ADA4841-1YRZ-RL

Analog Devices Inc.In Stock: 1064ADA4841-1YRZ-RL Datasheet

MFR RecommendedRFQ

MCP6H91T-E/SN

Microchip TechnologyIn Stock: 1177MCP6H91T-E/SN Datasheet

MFR RecommendedRFQ

TS461CDT

STMicroelectronicsIn Stock: 2759TS461CDT Datasheet

MFR RecommendedRFQ

TS971IDT

STMicroelectronicsIn Stock: 2023TS971IDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL971ID is determined by strict alignment of electrical and mechanical parameters. The following criteria establish valid substitute relationships:

Primary Substitution Criteria:

• Package / Case: 8-SOIC (0.154", 3.90mm Width) — identical physical footprint required
• Mounting Type: Surface Mount — compatible with existing PCB assembly processes
• Output Type: Rail-to-Rail — functional equivalence for output swing capability
• Number of Circuits: 1 — single amplifier per package
• Voltage - Supply Span: Minimum 2.7 V and Maximum ≥ 10 V — compatible with supply voltage requirements
• Operating Temperature: -40°C to 125°C or broader range — meets or exceeds temperature specification
• RoHS Status: ROHS3 Compliant — regulatory compliance maintained

Secondary Performance Parameters (must not degrade system function):

• Slew Rate: ≥ 4 V/µs — acceptable for general-purpose applications
• Gain Bandwidth Product: ≥ 10 MHz — maintains frequency response capability
• Current - Input Bias: ≤ 200 nA or lower — input impedance compatibility
• Voltage - Input Offset: ≤ 1 mV — DC accuracy preservation
• Current - Supply: ≤ 2 mA — power consumption compatibility
• Current - Output / Channel: ≥ 60 mA — output drive capability

Substitutes are grouped by manufacturer and product status to facilitate selection based on availability and supply chain considerations.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Preferred):

TL971IDR is the direct equivalent of TL971ID, manufactured by Texas Instruments with identical electrical specifications and 8-SOIC packaging. This part maintains Active product status and is available in higher quantities (9,894 pcs in stock). The only difference is packaging format: TL971IDR is supplied in Cut Tape and Digi-Reel format, whereas TL971ID is supplied in Tube. Both parts are ROHS3 compliant and carry identical regulatory certifications. Selection of TL971IDR is recommended as the primary replacement for TL971ID to maintain design continuity with minimal risk.

Secondary Substitutes (Texas Instruments Family):

No additional Texas Instruments general-purpose amplifiers in 8-SOIC package meet the substitution criteria beyond TL971IDR.

Cross-Manufacturer Substitutes:

TS971IDT (STMicroelectronics) provides functional equivalence with identical electrical specifications to TL971ID. This part features Active product status, ROHS3 compliance, and operates across the required temperature range (-40°C to 125°C). The maximum supply voltage is limited to 10 V (versus 12 V for TL971ID), which is acceptable for applications not requiring the full 12 V supply range. Output current capability is superior at 100 mA versus 80 mA. TS971IDT is suitable for designs where supply voltage does not exceed 10 V.

TS461CDT (STMicroelectronics) meets core substitution criteria with identical package, rail-to-rail output, and matching input bias current and offset voltage. However, operating temperature range is restricted to -20°C to 70°C, and maximum supply voltage is limited to 10 V. This part is suitable only for applications operating within the narrower temperature and voltage specifications.

MCP6H91T-E/SN (Microchip Technology) provides general-purpose amplification in 8-SOIC package with superior input bias current (10 pA versus 200 nA). However, minimum supply voltage is 3.5 V (versus 2.7 V for TL971ID), and output current capability is reduced to 41 mA (versus 80 mA). This part is suitable for applications with higher minimum supply voltage and lower output current requirements.

ADA4841-1YRZ and ADA4841-1YRZ-RL (Analog Devices Inc.) are voltage feedback amplifiers with enhanced performance characteristics: slew rate of 13 V/µs, gain bandwidth product of 80 MHz, and superior input offset voltage of 40 µV. However, input bias current is significantly higher at 3 µA, and output current is reduced to 60 mA. These parts are suitable for applications requiring higher bandwidth and faster slew rate, with tolerance for higher input bias current.

Compliance and Availability:

All substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating. All parts are REACH Unaffected and carry EAR99 ECCN classification. Selection should prioritize parts with Active product status to ensure long-term supply availability.

Frequently Asked Questions (FAQ)

Q: Can TL971IDR be used as a direct replacement for TL971ID?

A: Yes. TL971IDR is the direct equivalent manufactured by Texas Instruments with identical electrical specifications, operating temperature range, and supply voltage range. The only difference is packaging format: TL971IDR is supplied in Cut Tape and Digi-Reel format, while TL971ID is supplied in Tube. Both are pin-compatible 8-SOIC packages and are functionally interchangeable.

Q: What is the primary reason to substitute TL971ID?

A: TL971ID holds Last Time Buy status, indicating Texas Instruments has discontinued this part number. Substitution is necessary to secure long-term supply for new designs or production continuity. TL971IDR, manufactured by the same company with identical specifications, is the recommended replacement.

Q: Are the ADA4841 parts suitable replacements for TL971ID?

A: ADA4841-1YRZ and ADA4841-1YRZ-RL are functionally compatible in 8-SOIC package and share the same supply voltage range (2.7 V to 12 V) and operating temperature range (-40°C to 125°C). However, these are voltage feedback amplifiers with different performance characteristics: higher slew rate (13 V/µs versus 5 V/µs), higher bandwidth (80 MHz versus 12 MHz), but significantly higher input bias current (3 µA versus 200 nA). These parts are suitable for applications requiring higher bandwidth and faster response, provided the higher input bias current is acceptable.

Q: Can TS971IDT replace TL971ID in all applications?

A: TS971IDT is suitable for most applications but with one limitation: maximum supply voltage is 10 V instead of 12 V. If your application requires operation at 12 V supply, TS971IDT is not appropriate. For applications operating at 10 V or below, TS971IDT provides equivalent performance with superior output current capability (100 mA versus 80 mA).

Q: What is the difference between TS461CDT and TS971IDT?

A: Both are STMicroelectronics general-purpose amplifiers in 8-SOIC package. TS971IDT has a wider operating temperature range (-40°C to 125°C versus -20°C to 70°C) and higher output current capability (100 mA versus not specified). TS461CDT is suitable only for applications operating within -20°C to 70°C temperature range. TS971IDT is the preferred STMicroelectronics substitute for TL971ID.

Q: Is MCP6H91T-E/SN compatible with TL971ID?

A: MCP6H91T-E/SN is compatible in 8-SOIC package and operating temperature range, but has two important limitations: minimum supply voltage is 3.5 V (versus 2.7 V for TL971ID), and output current is reduced to 41 mA (versus 80 mA). This part is suitable only for applications with supply voltage ≥ 3.5 V and output current requirements ≤ 41 mA.

Q: What packaging formats are available for substitute parts?

A: Substitute parts are available in multiple packaging formats: Tube, Cut Tape (CT), Cut Tape with Digi-Reel, and Tape & Reel (TR). All formats contain identical components in 8-SOIC package. Selection depends on manufacturing process requirements: Tube for manual assembly, Cut Tape for semi-automated processes, and Tape & Reel for high-volume automated assembly.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed are ROHS3 compliant and carry identical regulatory certifications (REACH Unaffected, EAR99 ECCN). All parts have MSL Level 1 (Unlimited) moisture sensitivity rating.

Q: Which substitute offers the best input bias current performance?

A: MCP6H91T-E/SN offers the lowest input bias current at 10 pA, compared to 200 nA for TL971ID. However, this part has higher minimum supply voltage (3.5 V) and lower output current (41 mA). ADA4841 series offers intermediate input bias current at 3 µA with higher bandwidth performance.