LM8261M5X Equivalent & Substitute Parts

Part Overview

The LM8261M5X is a general-purpose operational amplifier manufactured by Texas Instruments, housed in a SOT-23-5 surface mount package. This rail-to-rail output amplifier is designed for applications requiring single-circuit amplification with moderate bandwidth and slew rate characteristics. The device operates across a wide supply voltage range of 2.5 V to 30 V and is rated for industrial temperature applications from -40°C to 85°C.

The LM8261M5X carries a Last Time Buy product status, indicating that Texas Instruments has discontinued active production. This status necessitates identification of equivalent and substitute parts to ensure design continuity and procurement availability for ongoing production requirements.

Substiute Parts

LM8261M5X

Texas InstrumentsIn Stock: 23622LM8261M5X Datasheet

Current PartRFQ

LM8261M5X/NOPB

Texas InstrumentsIn Stock: 20260LM8261M5X/NOPB Datasheet

DirectRFQ

ADA4084-1ARJZ-R2

Analog Devices Inc.In Stock: 2114ADA4084-1ARJZ-R2 Datasheet

MFR RecommendedRFQ

ADA4084-1ARJZ-R7

Analog Devices Inc.In Stock: 1000484ADA4084-1ARJZ-R7 Datasheet

MFR RecommendedRFQ

ADA4084-1ARJZ-RL

Analog Devices Inc.In Stock: 843ADA4084-1ARJZ-RL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM8261M5X is determined by the following critical parameters that must remain constant or compatible across alternative parts:

Mandatory Compatibility Parameters:

• Amplifier Type: General Purpose
• Number of Circuits: 1
• Output Type: Rail-to-Rail
• Package / Case: SC-74A, SOT-753 (SOT-23-5 supplier package)
• Mounting Type: Surface Mount
• Voltage - Supply Span: Minimum 2.5 V to Maximum 30 V
• Operating Temperature Range: -40°C to 85°C or wider

Performance Parameters for Substitution:

• Slew Rate: 12 V/µs (LM8261M5X specification)
• Gain Bandwidth Product: 24 MHz (LM8261M5X specification)
• Current - Input Bias: 1.05 µA (LM8261M5X specification)
• Voltage - Input Offset: 700 µV (LM8261M5X specification)
• Current - Supply: 1.3 mA (LM8261M5X specification)
• Current - Output / Channel: 100 mA (LM8261M5X specification)

Substitute parts are grouped into two categories:

Category 1: Direct Equivalents (Texas Instruments) Parts that maintain identical electrical specifications and differ only in packaging configuration or regulatory compliance status.

Category 2: Functional Alternatives (Analog Devices Inc.) Parts that provide the same functional classification (general-purpose rail-to-rail operational amplifier in SOT-23-5 package) but with different electrical performance characteristics. These alternatives operate within the same supply voltage range and package footprint but exhibit different slew rate, bandwidth, input bias current, and output current specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: LM8261M5X/NOPB

The LM8261M5X/NOPB is the direct equivalent substitute for the LM8261M5X. This part maintains identical electrical specifications across all performance parameters including slew rate (12 V/µs), gain bandwidth product (24 MHz), input bias current (1.05 µA), input offset voltage (700 µV), supply current (1.3 mA), and output current (100 mA). The LM8261M5X/NOPB carries Active product status from Texas Instruments, ensuring continued availability and manufacturing support. Both parts share identical package specifications (SC-74A, SOT-753) and mounting characteristics. The primary difference is REACH compliance status: LM8261M5X/NOPB is REACH Unaffected, whereas the original LM8261M5X is REACH Affected. Current inventory of LM8261M5X/NOPB is 20,200 units.

Secondary Recommendation: ADA4084-1ARJZ-R7

The ADA4084-1ARJZ-R7 manufactured by Analog Devices Inc. is a functional alternative for applications where the LM8261M5X electrical specifications can be accommodated within design tolerances. This part shares the same package footprint (SC-74A, SOT-753), mounting type (Surface Mount), and supply voltage range (3 V to 30 V minimum to maximum). The ADA4084-1ARJZ-R7 operates across an extended temperature range (-40°C to 125°C), providing superior thermal performance compared to the LM8261M5X (-40°C to 85°C). However, the ADA4084-1ARJZ-R7 exhibits reduced performance in slew rate (4.6 V/µs versus 12 V/µs), gain bandwidth product (15.9 MHz versus 24 MHz), output current per channel (30 mA versus 100 mA), and supply current (0.625 mA versus 1.3 mA). The ADA4084-1ARJZ-R7 demonstrates superior input characteristics with input bias current of 140 nA (versus 1.05 µA) and input offset voltage of 40 µV (versus 700 µV). Current inventory is 1,000,400 units. This part is suitable for designs where lower input bias current and offset voltage are beneficial, and where the reduced slew rate and bandwidth do not constrain circuit performance.

Tertiary Recommendation: ADA4084-1ARJZ-R2

The ADA4084-1ARJZ-R2 is functionally identical to the ADA4084-1ARJZ-R7, with the same electrical specifications and performance characteristics. The distinction between these two Analog Devices parts is packaging configuration: ADA4084-1ARJZ-R2 is supplied in Cut Tape (CT) & Digi-Reel® configuration, whereas ADA4084-1ARJZ-R7 is supplied in the same packaging. Current inventory of ADA4084-1ARJZ-R2 is 2,038 units.

Quaternary Recommendation: ADA4084-1ARJZ-RL

The ADA4084-1ARJZ-RL is functionally identical to ADA4084-1ARJZ-R2 and ADA4084-1ARJZ-R7 in electrical specifications. The primary distinction is packaging configuration: ADA4084-1ARJZ-RL is supplied in Tape & Reel (TR) format, suitable for high-volume automated assembly operations. Current inventory is 819 units. This part is recommended when procurement requirements specify Tape & Reel packaging and when the functional characteristics of the ADA4084 family are acceptable for the application.

Compliance and Regulatory Considerations:

All substitute parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited) rating, consistent with the original LM8261M5X. The LM8261M5X/NOPB is REACH Unaffected, providing regulatory advantage over the original LM8261M5X (REACH Affected). All Analog Devices alternatives (ADA4084-1ARJZ series) are REACH Unaffected.

Frequently Asked Questions (FAQ)

Q1: Can the LM8261M5X/NOPB be used as a direct replacement for the LM8261M5X?

A: Yes. The LM8261M5X/NOPB is a direct equivalent with identical electrical specifications. Both parts share the same slew rate (12 V/µs), gain bandwidth product (24 MHz), input bias current (1.05 µA), input offset voltage (700 µV), supply current (1.3 mA), output current (100 mA), and operating temperature range (-40°C to 85°C). The package footprint (SC-74A, SOT-753) and mounting type (Surface Mount) are identical. The LM8261M5X/NOPB carries Active product status and is available in higher quantities (20,200 units in stock).

Q2: What are the key differences between the LM8261M5X and the ADA4084-1ARJZ series?

A: The primary differences are slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current. The LM8261M5X provides higher slew rate (12 V/µs versus 4.6 V/µs), higher gain bandwidth product (24 MHz versus 15.9 MHz), and higher output current per channel (100 mA versus 30 mA). The ADA4084-1ARJZ series provides lower input bias current (140 nA versus 1.05 µA), lower input offset voltage (40 µV versus 700 µV), lower supply current (0.625 mA versus 1.3 mA), and extended operating temperature range (-40°C to 125°C versus -40°C to 85°C). Both families share identical package specifications and supply voltage range (minimum 2.5 V to 3 V, maximum 30 V).

Q3: Can the ADA4084-1ARJZ series be used in applications designed for the LM8261M5X?

A: Substitution depends on circuit requirements. The ADA4084-1ARJZ series is suitable for applications where reduced slew rate (4.6 V/µs), reduced bandwidth (15.9 MHz), and reduced output current (30 mA) do not violate design specifications. The ADA4084-1ARJZ series is advantageous in applications requiring lower input bias current, lower input offset voltage, or extended temperature operation. Applications requiring the full 12 V/µs slew rate, 24 MHz bandwidth, or 100 mA output current must use the LM8261M5X or LM8261M5X/NOPB.

Q4: What is the difference between ADA4084-1ARJZ-R2, ADA4084-1ARJZ-R7, and ADA4084-1ARJZ-RL?

A: These three parts are electrically identical with the same specifications and performance characteristics. The differences are in packaging configuration and inventory availability. ADA4084-1ARJZ-R2 and ADA4084-1ARJZ-R7 are supplied in Cut Tape (CT) & Digi-Reel® configuration. ADA4084-1ARJZ-RL is supplied in Tape & Reel (TR) format. Selection between these variants depends on assembly process requirements and packaging preferences. ADA4084-1ARJZ-R7 has the highest inventory (1,000,400 units).

Q5: Are all substitute parts RoHS3 compliant?

A: Yes. The LM8261M5X, LM8261M5X/NOPB, and all ADA4084-1ARJZ variants (R2, R7, RL) are ROHS3 Compliant. All parts maintain Moisture Sensitivity Level 1 (Unlimited).

Q6: What is the minimum supply voltage for each part?

A: The LM8261M5X and LM8261M5X/NOPB operate with a minimum supply voltage of 2.5 V. The ADA4084-1ARJZ series (R2, R7, RL) requires a minimum supply voltage of 3 V. Designs operating at 2.5 V must use the LM8261M5X or LM8261M5X/NOPB.

Q7: Which substitute part has the best availability?

A: The ADA4084-1ARJZ-R7 has the highest inventory with 1,000,400 units in stock. The LM8261M5X/NOPB has 20,200 units available. The ADA4084-1ARJZ-R2 has 2,038 units, and the ADA4084-1ARJZ-RL has 819 units.

Q8: Can the LM8261M5X be used in applications requiring operation above 85°C?

A: No. The LM8261M5X is rated for operating temperatures from -40°C to 85°C. Applications requiring operation above 85°C must use the ADA4084-1ARJZ series, which is rated for -40°C to 125°C.

Q9: What is the REACH compliance status of each part?

A: The LM8261M5X is REACH Affected. The LM8261M5X/NOPB, ADA4084-1ARJZ-R2, ADA4084-1ARJZ-R7, and ADA4084-1ARJZ-RL are all REACH Unaffected.

Q10: Are all substitute parts available in the same package?

A: Yes. All parts (LM8261M5X, LM8261M5X/NOPB, and ADA4084-1ARJZ series) use the SC-74A, SOT-753 package with SOT-23-5 supplier device package designation. All are Surface Mount components with identical footprints.