TL081CPS Equivalent & Substitute Parts

Part Overview

The TL081CPS is a J-FET input operational amplifier manufactured by Texas Instruments, designed for general-purpose amplification applications. This device features a single amplifier circuit with push-pull output configuration in an 8-SOIC surface mount package. The TL081CPS is currently designated as Last Time Buy, indicating that the manufacturer has discontinued or will discontinue production. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications currently utilizing this component.

Substiute Parts

TL081CPS

Texas InstrumentsIn Stock: 935TL081CPS Datasheet

Current PartRFQ

TL081CDR

Texas InstrumentsIn Stock: 1964TL081CDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL081CPS is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Amplifier Type: J-FET input architecture
• Number of Circuits: Single amplifier circuit
• Slew Rate: 13 V/µs
• Gain Bandwidth Product: 3 MHz
• Current - Input Bias: 30 pA
• Voltage - Input Offset: 3 mV
• Current - Supply: 1.4 mA
• Operating Temperature Range: 0°C to 70°C

Mechanical & Packaging Equivalence Criteria:

• Mounting Type: Surface Mount
• Package / Case: 8-SOIC configuration
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Supply Voltage Compatibility: The substitute part must operate within a supply voltage range that encompasses or exceeds the minimum and maximum requirements of the original part. The TL081CPS requires a supply span of 10 V to 30 V.

The TL081CDR meets all electrical and mechanical equivalence criteria and is therefore classified as a direct substitute for the TL081CPS.

Parameter Comparison

Engineering Selection Recommendations

The TL081CDR is a direct electrical equivalent to the TL081CPS and is suitable for substitution in applications currently utilizing the main part number. The following factors support this substitution:

Product Status: The TL081CPS is designated Last Time Buy, whereas the TL081CDR maintains Active product status with Texas Instruments. This ensures continued availability and supply chain stability for new designs and production runs.

Electrical Performance: All critical electrical parameters are identical between the two parts, including slew rate, gain bandwidth product, input bias current, input offset voltage, and supply current. The TL081CDR operates across a wider supply voltage range (7 V to 36 V) compared to the TL081CPS (10 V to 30 V), providing enhanced flexibility in power supply design.

Compliance & Certification: Both parts are ROHS3 compliant and carry identical moisture sensitivity ratings. The TL081CPS carries AEC-Q100 automotive qualification; the TL081CDR specifications provided do not explicitly reference this qualification status.

Packaging Considerations: Both parts utilize 8-SOIC surface mount packages. The TL081CDR features a narrower body width (3.90mm) compared to the TL081CPS (5.30mm). This dimensional difference requires verification of printed circuit board layout compatibility, particularly for high-density designs or applications with tight component spacing constraints.

Frequently Asked Questions (FAQ)

Q: Can the TL081CDR be used as a direct replacement for the TL081CPS in existing designs?

A: The TL081CDR is electrically equivalent to the TL081CPS across all specified performance parameters. However, the physical package body width differs (3.90mm versus 5.30mm). Verification of printed circuit board layout compatibility is required before implementation.

Q: What is the primary reason for substituting the TL081CPS?

A: The TL081CPS is designated Last Time Buy by the manufacturer, indicating production discontinuation. The TL081CDR maintains Active product status and ensures continued component availability for production and design applications.

Q: Are there any electrical performance differences between these parts?

A: No electrical performance differences exist. Both parts share identical specifications for slew rate, gain bandwidth product, input bias current, input offset voltage, and supply current. The TL081CDR operates across a wider supply voltage range, which may provide design advantages in certain applications.

Q: Do both parts meet the same compliance standards?

A: Both parts are ROHS3 compliant and carry identical moisture sensitivity ratings (MSL 1 - Unlimited). The TL081CPS carries explicit AEC-Q100 automotive qualification; automotive qualification status for the TL081CDR should be confirmed with the manufacturer if required for your application.

Q: What is the significance of the different 8-SOIC package body widths?

A: The TL081CPS uses an 8-SOIC package with 5.30mm body width, while the TL081CDR uses an 8-SOIC package with 3.90mm body width. Both are standard 8-SOIC configurations but with different physical dimensions. Printed circuit board layouts designed for the wider package may require modification to accommodate the narrower substitute part, particularly in space-constrained applications.

Q: Is the TL081CDR available in higher quantities than the TL081CPS?

A: Current inventory data indicates 1900 pieces of TL081CDR in stock compared to 866 pieces of TL081CPS. The TL081CDR's Active product status also ensures ongoing manufacturing availability.

Q: What supply voltage range should be used when substituting the TL081CDR?

A: The TL081CDR operates across a supply voltage range of 7 V to 36 V, which encompasses the original TL081CPS requirement of 10 V to 30 V. Existing designs operating within the 10 V to 30 V range require no supply voltage modifications.