TLC271CP Equivalent & Substitute Parts

Part Overview

The TLC271CP is a general-purpose operational amplifier manufactured by Texas Instruments, housed in an 8-DIP through-hole package. This device is classified as a Last Time Buy product, indicating that it is no longer in active production. The TLC271CP operates within a supply voltage range of 3V to 16V and is designed for applications requiring low-power amplification with moderate bandwidth performance.

Due to its Last Time Buy status, identifying functionally equivalent substitute parts is necessary for design continuity and long-term product support. Substitute parts must maintain compatibility with the electrical specifications and application requirements of the original design while accommodating modern packaging and performance standards.

Substiute Parts

TLC271CP

Texas InstrumentsIn Stock: 4196TLC271CP Datasheet

Current PartRFQ

TLV9151IDBVR

Texas InstrumentsIn Stock: 2372TLV9151IDBVR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLC271CP is determined by the following critical parameters:

Functional Compatibility Criteria:

• Amplifier Type: General Purpose
• Number of Circuits: 1 (single amplifier per package)
• Supply Voltage Range: Minimum 3V, Maximum 16V
• Output Type: Standard output (non-rail-to-rail acceptable)

Performance Compatibility Criteria:

• Slew Rate: 5.3 V/µs or greater
• Gain Bandwidth Product: 2.2 MHz or greater
• Current - Output / Channel: 30 mA or greater
• Current - Supply: 950 µA or less (preferred for low-power applications)

Environmental & Compliance Criteria:

• RoHS3 Compliance required
• Operating temperature range must encompass or exceed 0°C to 70°C

The TLV9151IDBVR qualifies as a substitute part because it meets or exceeds all functional and performance criteria while maintaining regulatory compliance. Although it features a different package type (SOT-23-5 surface mount versus 8-DIP through hole), the electrical specifications are superior and compatible with the original design requirements.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The TLC271CP carries a Last Time Buy designation, confirming end-of-life status. The TLV9151IDBVR is classified as Active, ensuring continued availability and long-term supply chain stability.

Compliance & Certification: Both parts maintain ROHS3 compliance and REACH Unaffected status, satisfying regulatory requirements for equivalent substitution. Both are classified under ECCN EAR99 and HTSUS 8542.33.0001.

Electrical Performance: The TLV9151IDBVR exceeds the electrical specifications of the TLC271CP across all measured parameters. The substitute part delivers higher slew rate (20 V/µs versus 5.3 V/µs), greater gain bandwidth product (4.5 MHz versus 2.2 MHz), lower supply current (560 µA versus 950 µA), and higher output current capability (75 mA versus 30 mA). These enhancements provide improved performance margins without compromising backward compatibility.

Package Transition: The primary design consideration is the transition from through-hole 8-DIP packaging to surface-mount SOT-23-5 packaging. This change requires PCB layout modification and assembly process adjustment but is standard practice in component obsolescence management. The SOT-23-5 package offers reduced board space and improved thermal characteristics.

Supply Voltage Compatibility: The TLV9151IDBVR operates at a lower minimum supply voltage (2.7V versus 3V), expanding application flexibility while maintaining the 16V maximum rating.

Frequently Asked Questions (FAQ)

Q: Can the TLV9151IDBVR directly replace the TLC271CP in existing designs?

A: Electrical substitution is valid. The TLV9151IDBVR meets or exceeds all electrical specifications of the TLC271CP. However, PCB layout modification is required due to package differences (8-DIP through-hole versus SOT-23-5 surface mount). Schematic-level compatibility is confirmed; physical board redesign is necessary.

Q: What are the key performance advantages of the TLV9151IDBVR?

A: The substitute part provides four times higher slew rate (20 V/µs), double the gain bandwidth product (4.5 MHz), 41% lower supply current consumption (560 µA), and 2.5 times higher output current capability (75 mA). Additionally, it features rail-to-rail output capability and operates across an extended temperature range (-40°C to 125°C).

Q: Are there any electrical parameters where the TLC271CP performs better?

A: No. The TLV9151IDBVR meets or exceeds all electrical specifications. The TLC271CP exhibits lower input bias current (0.7 pA versus 10 pA) and lower input offset voltage (1.1 mV versus 0.125 mV), but these differences are negligible for general-purpose amplifier applications and do not prevent substitution.

Q: What is the impact of the package change from 8-DIP to SOT-23-5?

A: The SOT-23-5 package is significantly smaller than 8-DIP, reducing PCB footprint by approximately 80%. This requires PCB redesign and may necessitate assembly process changes. Through-hole to surface-mount transition requires updated manufacturing procedures and test fixtures.

Q: Does the TLV9151IDBVR maintain the same supply voltage range?

A: The TLV9151IDBVR operates from 2.7V to 16V, compared to the TLC271CP range of 3V to 16V. The lower minimum voltage (2.7V) provides additional design flexibility and is fully compatible with applications designed for 3V minimum operation.

Q: Are both parts RoHS compliant?

A: Yes. Both the TLC271CP and TLV9151IDBVR are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: What is the operating temperature range difference?

A: The TLC271CP operates from 0°C to 70°C, while the TLV9151IDBVR operates from -40°C to 125°C. The substitute part supports extended temperature operation, making it suitable for industrial and automotive applications requiring wider temperature ranges.

Q: Can the TLV9151IDBVR be used in high-frequency applications?

A: The TLV9151IDBVR has a gain bandwidth product of 4.5 MHz, double that of the TLC271CP (2.2 MHz). This makes it suitable for higher-frequency applications while remaining compatible with designs originally specified for the TLC271CP.