TLC271BCD Equivalent & Substitute Parts

Part Overview

The TLC271BCD is a general-purpose operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device is classified as a LinCMOS™ series amplifier with a single circuit configuration, designed for low-power applications requiring moderate bandwidth performance. The part carries a Last Time Buy product status, indicating that Texas Instruments has discontinued this component and existing inventory represents the final manufacturing run. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications currently utilizing the TLC271BCD.

Substiute Parts

TLC271BCD

Texas InstrumentsIn Stock: 2955TLC271BCD Datasheet

Current PartRFQ

TLC271BCDR

Texas InstrumentsIn Stock: 2128TLC271BCDR Datasheet

MFR RecommendedRFQ

TLC27L1CS-13

Diodes IncorporatedIn Stock: 3636TLC27L1CS-13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLC271BCD is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Supply voltage range (3 V to 16 V minimum and maximum)
• Output current capability (30 mA per channel)
• Input bias current (0.7 pA)
• Operating temperature range (0°C to 70°C)
• Package configuration (8-SOIC surface mount)

Mechanical Compatibility Criteria:

• Package type: 8-SOIC (0.154", 3.90mm Width)
• Mounting type: Surface Mount
• Pin count and footprint alignment

Regulatory Compliance Criteria:

• RoHS3 compliance
• Moisture Sensitivity Level 1 (Unlimited)

The substitute parts identified maintain these core parameters while differing in secondary performance characteristics such as slew rate, gain bandwidth product, and input offset voltage. These differences reflect variations in amplifier topology and manufacturing process rather than fundamental incompatibility.

Parameter Comparison

Engineering Selection Recommendations

TLC271BCDR (Texas Instruments)

The TLC271BCDR is the direct equivalent of the TLC271BCD, differing only in packaging format (Cut Tape & Digi-Reel® versus Tube). All electrical specifications, performance parameters, and regulatory certifications are identical. This part maintains the same Last Time Buy status and represents the preferred substitute when packaging compatibility with reel-based supply chains is acceptable. The TLC271BCDR is suitable for high-volume manufacturing environments utilizing automated tape-and-reel component handling.

TLC27L1CS-13 (Diodes Incorporated)

The TLC27L1CS-13 is a functional substitute for applications where reduced power consumption is a design priority. This part maintains full electrical compatibility across supply voltage range, output current, input bias current, and operating temperature. However, the TLC27L1CS-13 exhibits significantly reduced bandwidth performance (110 kHz versus 2.2 MHz) and slew rate (0.04 V/µs versus 5.3 V/µs), along with higher input offset voltage (10 mV versus 390 µV). The TLC27L1CS-13 carries Active product status, ensuring long-term availability. This substitute is appropriate for low-frequency signal conditioning applications where bandwidth limitations do not impact circuit performance. Supply current is reduced to 14 µA, providing substantial power savings in battery-powered or energy-constrained systems.

Frequently Asked Questions (FAQ)

Q: Can the TLC271BCDR be used as a direct replacement for the TLC271BCD?

A: Yes. The TLC271BCDR is electrically and mechanically identical to the TLC271BCD. The only difference is packaging format: TLC271BCD is supplied in Tube packaging, while TLC271BCDR is supplied in Cut Tape & Digi-Reel® format. Both parts share identical pin configurations, electrical specifications, and performance characteristics.

Q: What are the key differences between the TLC271BCD and TLC27L1CS-13?

A: Both parts share identical supply voltage range (3 V to 16 V), output current capability (30 mA), input bias current (0.7 pA), and operating temperature range (0°C to 70°C). The TLC27L1CS-13 differs in three significant areas: (1) Slew rate is reduced from 5.3 V/µs to 0.04 V/µs, (2) Gain bandwidth product is reduced from 2.2 MHz to 110 kHz, and (3) Input offset voltage is increased from 390 µV to 10 mV. Additionally, the TLC27L1CS-13 consumes only 14 µA of supply current compared to 950 µA for the TLC271BCD.

Q: Is the TLC27L1CS-13 suitable for high-frequency applications?

A: No. The TLC27L1CS-13 is designed for low-frequency signal conditioning. With a gain bandwidth product of only 110 kHz and slew rate of 0.04 V/µs, this part is unsuitable for applications requiring bandwidth above approximately 100 kHz. The TLC271BCD and TLC271BCDR, with 2.2 MHz bandwidth, are appropriate for higher-frequency applications.

Q: Are all three parts RoHS3 compliant?

A: Yes. The TLC271BCD, TLC271BCDR, and TLC27L1CS-13 are all ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). All parts meet current environmental and regulatory requirements.

Q: What is the significance of the Last Time Buy status for the TLC271BCD and TLC271BCDR?

A: Last Time Buy status indicates that Texas Instruments has discontinued these components and existing inventory represents the final manufacturing run. Once current stock is depleted, these parts will no longer be available from the manufacturer. The TLC27L1CS-13, carrying Active status, represents a long-term availability alternative for future designs.

Q: Can I use the TLC27L1CS-13 in a circuit designed for the TLC271BCD if I adjust component values?

A: Substitution depends on circuit function. For applications where bandwidth and slew rate are not critical performance factors, the TLC27L1CS-13 can function as a substitute with appropriate circuit redesign. However, circuits requiring fast transient response or high-frequency signal processing cannot be accommodated by the TLC27L1CS-13 without fundamental redesign.

Q: Are the pin configurations identical across all three parts?

A: Yes. All three parts use the 8-SOIC package with identical pin assignments. The physical footprint and pin count are the same, enabling direct PCB-level substitution without layout modifications.