TLC271IP Equivalent & Substitute Parts

Part Overview

The TLC271IP is a general-purpose operational amplifier manufactured by Texas Instruments, housed in an 8-DIP through-hole package. This device is classified as a LinCMOS™ series amplifier with a single circuit configuration, designed for analog signal processing applications requiring low input bias current and moderate bandwidth performance.

The TLC271IP currently holds Last Time Buy status, indicating that Texas Instruments has discontinued or will discontinue production. This product status necessitates identification of equivalent and substitute components to ensure design continuity and long-term supply chain reliability for applications currently utilizing this part number.

Substiute Parts

TLC271IP

Texas InstrumentsIn Stock: 1931TLC271IP Datasheet

Current PartRFQ

TLV9151IDBVR

Texas InstrumentsIn Stock: 2372TLV9151IDBVR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLC271IP requires evaluation of functional equivalence based on the following critical parameters:

Functional Compatibility Criteria:

• Amplifier Type: General Purpose configuration
• Number of Circuits: Single circuit per package
• Supply Voltage Range: Minimum 4V to maximum 16V operation
• Input Bias Current: Ultra-low leakage (sub-nanoampere range)
• Slew Rate and Gain Bandwidth Product: Performance envelope for signal fidelity
• Output Drive Capability: Minimum 30 mA per channel
• Operating Temperature Range: -40°C to 85°C minimum

Package and Form Factor Considerations: The TLC271IP uses through-hole 8-DIP packaging. Substitute parts may employ surface-mount technology (SMT) packages, which requires circuit board redesign and assembly process modification. Such substitutions are valid from an electrical standpoint but introduce mechanical and manufacturing constraints.

Regulatory and Compliance Alignment: All substitute parts must maintain ROHS3 compliance and REACH unaffected status to ensure regulatory continuity.

The TLV9151IDBVR qualifies as a functional substitute based on shared general-purpose amplifier architecture, single-circuit configuration, and overlapping supply voltage specifications, despite differences in package form factor and enhanced performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The TLC271IP is designated Last Time Buy, confirming end-of-life status. The TLV9151IDBVR maintains Active product status with Texas Instruments, ensuring ongoing availability, technical support, and manufacturing continuity.

Compliance and Regulatory Alignment: Both the TLC271IP and TLV9151IDBVR maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for equivalent component substitution in regulated industries and markets.

Electrical Compatibility: The TLV9151IDBVR operates within the supply voltage range of the TLC271IP (2.7V to 16V encompasses the 4V to 16V requirement). The substitute part exceeds minimum output current specifications (75 mA versus 30 mA requirement) and provides enhanced slew rate and bandwidth performance.

Package Form Factor Impact: Substitution from 8-DIP through-hole to SOT-23-5 surface-mount packaging requires circuit board redesign and assembly process modification. This represents a mechanical constraint rather than an electrical incompatibility. Organizations must evaluate redesign feasibility against supply chain continuity requirements.

Temperature Operating Range: The TLV9151IDBVR extends the upper operating temperature limit to 125°C, compared to 85°C for the TLC271IP. This provides additional thermal margin for applications operating in elevated ambient conditions.

Frequently Asked Questions (FAQ)

Q: Can the TLV9151IDBVR directly replace the TLC271IP without circuit modification?

A: Electrical substitution is valid based on functional parameters. However, the TLV9151IDBVR uses SOT-23-5 surface-mount packaging versus the 8-DIP through-hole package of the TLC271IP. Direct socket replacement is not possible. Circuit board redesign and component placement modification are required.

Q: What are the key electrical differences between these parts?

A: The TLV9151IDBVR provides superior performance in slew rate (20 V/µs versus 5.3 V/µs), gain bandwidth product (4.5 MHz versus 2.2 MHz), and output current capability (75 mA versus 30 mA). Input offset voltage is lower (125 µV versus 1.1 mV). Supply current is reduced (560 µA versus 950 µA). These differences indicate the TLV9151IDBVR is a performance-enhanced substitute suitable for applications requiring faster signal processing or lower power consumption.

Q: Is the TLV9151IDBVR compatible with the TLC271IP supply voltage range?

A: Yes. The TLV9151IDBVR operates from 2.7V to 16V, which encompasses the TLC271IP operating range of 4V to 16V. Applications designed for the TLC271IP supply voltage specifications will function with the TLV9151IDBVR.

Q: What is the significance of the Last Time Buy status for the TLC271IP?

A: Last Time Buy designation indicates Texas Instruments has ceased or will cease production of the TLC271IP. Existing inventory may be available through authorized distributors, but long-term supply cannot be guaranteed. Component substitution planning is necessary for designs requiring extended product lifecycles.

Q: Does the TLV9151IDBVR maintain the same regulatory compliance as the TLC271IP?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, maintaining equivalent regulatory status for applications subject to environmental and hazardous substance restrictions.

Q: What design considerations apply when substituting from through-hole to surface-mount packaging?

A: Surface-mount substitution requires printed circuit board redesign to accommodate SOT-23-5 footprint geometry, modification of assembly processes to support SMT placement and reflow soldering, and potential changes to board layout and signal routing. Mechanical and thermal considerations may differ from through-hole implementations.