TLC271MDR Equivalent & Substitute Parts

Part Overview

The TLC271MDR is a general-purpose operational amplifier manufactured by Texas Instruments in the LinCMOS™ series. This device is packaged in 8-SOIC surface mount configuration and operates across a supply voltage range of 5V to 16V with an operating temperature range of -55°C to 125°C. The TLC271MDR is designated as Last Time Buy, indicating discontinued production status. Identification of equivalent and substitute parts is necessary to ensure design continuity and procurement availability for applications currently utilizing this component.

Substiute Parts

TLC271MDR

Texas InstrumentsIn Stock: 15224TLC271MDR Datasheet

Current PartRFQ

TLV9151IDBVR

Texas InstrumentsIn Stock: 2372TLV9151IDBVR Datasheet

MFR RecommendedRFQ

TLC27L1CS-13

Diodes IncorporatedIn Stock: 3636TLC27L1CS-13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLC271MDR is determined by the following critical parameters: amplifier type (general purpose), number of circuits (1), package compatibility, supply voltage range, operating temperature range, and output current capability. The TLC271MDR operates with a minimum supply voltage of 5V and maximum of 16V, with an operating temperature range of -55°C to 125°C.

Two substitute parts are identified based on functional equivalence within the allowed parameter specifications:

TLV9151IDBVR (Texas Instruments): Provides general-purpose amplification in a different package format (SOT-23-5). This substitute operates across 2.7V to 16V supply range with -40°C to 125°C operating temperature. The TLV9151IDBVR features rail-to-rail output capability, higher slew rate (20V/µs), and increased output current (75mA). However, the minimum supply voltage is lower (2.7V vs 5V) and the minimum operating temperature is higher (-40°C vs -55°C).

TLC27L1CS-13 (Diodes Incorporated): Provides CMOS amplification in the same 8-SOIC package format. This substitute operates across 3V to 16V supply range with 0°C to 70°C operating temperature. The TLC27L1CS-13 features significantly lower supply current (14µA vs 950µA) but reduced bandwidth (110kHz vs 2.2MHz) and slew rate (0.04V/µs vs 5.3V/µs). The minimum supply voltage is lower (3V vs 5V) and the operating temperature range is narrower (0°C to 70°C vs -55°C to 125°C).

Parameter Comparison

Engineering Selection Recommendations

TLV9151IDBVR Selection Criteria:

The TLV9151IDBVR is an active product from Texas Instruments suitable for applications where package size reduction is acceptable and supply voltage can be maintained above 2.7V. This substitute is appropriate for designs operating within the -40°C to 125°C temperature range. The TLV9151IDBVR provides superior performance characteristics including higher slew rate (20V/µs), increased gain bandwidth product (4.5MHz), and greater output current capability (75mA). The rail-to-rail output configuration extends design flexibility. All regulatory compliance requirements (ROHS3, MSL 1, REACH Unaffected, EAR99) are met. Package transition from 8-SOIC to SOT-23-5 requires PCB layout modification.

TLC27L1CS-13 Selection Criteria:

The TLC27L1CS-13 is an active product from Diodes Incorporated suitable for applications where package compatibility with 8-SOIC is required and low power consumption is prioritized. This substitute is appropriate for designs operating within the 0°C to 70°C temperature range and 3V to 16V supply range. The TLC27L1CS-13 provides significantly reduced supply current (14µA), making it suitable for battery-powered or low-power applications. However, the reduced bandwidth (110kHz) and slew rate (0.04V/µs) limit applicability to low-frequency signal processing. All regulatory compliance requirements (ROHS3, MSL 1, REACH Unaffected, EAR99) are met. Package compatibility with 8-SOIC eliminates PCB layout modification requirements.

Substitution Constraints:

Applications requiring the full -55°C to 125°C operating temperature range cannot use either substitute without design modification. Applications requiring the 5V minimum supply voltage specification cannot use TLV9151IDBVR (2.7V minimum) or TLC27L1CS-13 (3V minimum) without supply circuit modification. Applications requiring bandwidth above 110kHz cannot use TLC27L1CS-13. Applications requiring the original 8-SOIC package cannot use TLV9151IDBVR without PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can TLV9151IDBVR directly replace TLC271MDR in existing designs?

A: Direct replacement requires evaluation of three factors: (1) PCB layout compatibility, as TLV9151IDBVR uses SOT-23-5 package versus 8-SOIC; (2) operating temperature range, as TLV9151IDBVR minimum is -40°C versus -55°C for TLC271MDR; (3) minimum supply voltage, as TLV9151IDBVR operates from 2.7V versus 5V minimum for TLC271MDR. If all three factors are compatible with the application requirements, substitution is feasible.

Q: Can TLC27L1CS-13 directly replace TLC271MDR in existing designs?

A: Direct replacement requires evaluation of three factors: (1) package compatibility is maintained, as both use 8-SOIC; (2) operating temperature range, as TLC27L1CS-13 maximum is 70°C versus 125°C for TLC271MDR; (3) bandwidth requirements, as TLC27L1CS-13 provides 110kHz gain bandwidth product versus 2.2MHz for TLC271MDR. If the application operates below 70°C and does not require bandwidth above 110kHz, substitution is feasible.

Q: What are the key differences between TLV9151IDBVR and TLC27L1CS-13?

A: TLV9151IDBVR is a high-performance general-purpose amplifier with rail-to-rail output, 20V/µs slew rate, and 4.5MHz bandwidth, packaged in SOT-23-5. TLC27L1CS-13 is a low-power CMOS amplifier with 0.04V/µs slew rate and 110kHz bandwidth, packaged in 8-SOIC. TLV9151IDBVR is suitable for high-speed applications; TLC27L1CS-13 is suitable for low-power, low-frequency applications.

Q: Are all three parts RoHS compliant?

A: Yes. TLC271MDR, TLV9151IDBVR, and TLC27L1CS-13 are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level and REACH Unaffected status.

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

A: Package change from 8-SOIC to SOT-23-5 requires PCB layout modification including footprint redesign, trace routing adjustment, and potential thermal management reconsideration. SOT-23-5 is a smaller package with different pin spacing and thermal characteristics compared to 8-SOIC.

Q: Which substitute is recommended for low-power applications?

A: TLC27L1CS-13 is recommended for low-power applications, providing 14µA supply current versus 950µA for TLC271MDR and 560µA for TLV9151IDBVR. This 67-fold reduction in supply current is significant for battery-powered designs.

Q: Which substitute provides the highest performance?

A: TLV9151IDBVR provides the highest performance with 20V/µs slew rate, 4.5MHz gain bandwidth product, and 75mA output current capability, compared to TLC271MDR specifications of 5.3V/µs, 2.2MHz, and 30mA respectively.