TLC271AIP Equivalent & Substitute Parts

Part Overview

The TLC271AIP 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 it has reached end-of-life status. The TLC271AIP belongs to the LinCMOS™ series and is designed for applications requiring low-power, general-purpose amplification with a single circuit configuration.

Due to its Last Time Buy status, identifying functionally compatible substitute parts is essential for design continuity and long-term product support. The primary substitute identified is the TLV9151IDBVR, which offers enhanced performance characteristics while maintaining core amplification functionality.

Substiute Parts

TLC271AIP

Texas InstrumentsIn Stock: 2020TLC271AIP Datasheet

Current PartRFQ

TLV9151IDBVR

Texas InstrumentsIn Stock: 2372TLV9151IDBVR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLC271AIP with the TLV9151IDBVR is based on the following criteria:

Functional Compatibility:

• Both devices are single-circuit general-purpose operational amplifiers
• Both support the required supply voltage range (TLC271AIP: 4–16 V; TLV9151IDBVR: 2.7–16 V)
• Both operate within overlapping temperature ranges suitable for industrial applications

Performance Enhancement: The TLV9151IDBVR provides superior electrical characteristics:

• Higher slew rate (20 V/µs vs. 5.3 V/µs)
• Increased gain bandwidth product (4.5 MHz vs. 2.2 MHz)
• Lower input offset voltage (125 µV vs. 900 µV)
• Higher output current capability (75 mA vs. 30 mA)
• Lower supply current (560 µA vs. 950 µA)

Compliance and Status:

• Both devices are ROHS3 compliant
• Both are REACH unaffected
• TLV9151IDBVR has Active product status, ensuring long-term availability

Package Consideration: The TLV9151IDBVR uses a surface-mount SOT-23-5 package, requiring circuit board redesign compared to the through-hole 8-DIP package of the TLC271AIP.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The TLV9151IDBVR is a valid functional substitute for the TLC271AIP based on core amplifier specifications and compliance certifications. Both devices meet ROHS3 and REACH requirements, ensuring regulatory compatibility.

Critical Design Considerations:

1. Package Transition: The TLC271AIP uses through-hole 8-DIP packaging, while the TLV9151IDBVR uses surface-mount SOT-23-5 packaging. Circuit board redesign is mandatory for substitution.

2. Performance Advantages: The TLV9151IDBVR provides measurable improvements in slew rate, bandwidth, input offset voltage, and output current capability. These enhancements are beneficial for most general-purpose amplification applications.

3. Supply Voltage Compatibility: The TLV9151IDBVR supports a lower minimum supply voltage (2.7 V vs. 4 V), expanding application flexibility while maintaining full compatibility with the TLC271AIP's 4–16 V operating range.

4. Temperature Range Extension: The TLV9151IDBVR operates to 125°C, compared to 85°C for the TLC271AIP, providing thermal margin for demanding environments.

5. Output Type Difference: The TLV9151IDBVR features rail-to-rail output capability, enabling full supply voltage swing utilization. Applications requiring maximum output voltage swing benefit from this enhancement.

6. Product Status: The TLV9151IDBVR's Active status ensures long-term component availability and supply chain stability, addressing the Last Time Buy limitation of the TLC271AIP.

Implementation Path:

Substitution requires schematic and PCB layout modifications to accommodate the SOT-23-5 package. Pin configuration differences necessitate careful signal routing verification. The enhanced electrical characteristics of the TLV9151IDBVR typically require no circuit topology changes for standard general-purpose amplification applications.

Frequently Asked Questions (FAQ)

Q: Can the TLV9151IDBVR directly replace the TLC271AIP without circuit modifications?

A: No. While both devices are functionally equivalent general-purpose amplifiers, the TLV9151IDBVR uses a surface-mount SOT-23-5 package, whereas the TLC271AIP uses a through-hole 8-DIP package. PCB layout and schematic redesign are required. Pin assignments differ between packages and must be verified during implementation.

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

A: The TLV9151IDBVR offers superior performance: 3.8× higher slew rate (20 V/µs vs. 5.3 V/µs), 2.0× higher gain bandwidth product (4.5 MHz vs. 2.2 MHz), 7.2× lower input offset voltage (125 µV vs. 900 µV), and 2.5× higher output current (75 mA vs. 30 mA). Supply current is 41% lower. These improvements are generally beneficial for signal conditioning and general-purpose amplification.

Q: Is the TLV9151IDBVR compatible with the TLC271AIP's supply voltage range?

A: Yes. The TLV9151IDBVR operates from 2.7 V to 16 V, which encompasses the TLC271AIP's 4 V to 16 V range. The TLV9151IDBVR additionally supports lower supply voltages down to 2.7 V, expanding design flexibility.

Q: Why does the TLC271AIP have lower input bias current than the TLV9151IDBVR?

A: The TLC271AIP specifies 0.7 pA input bias current, while the TLV9151IDBVR specifies 10 pA. This difference reflects different semiconductor process technologies and design approaches. For most general-purpose applications, both values are negligible. Applications with extremely high source impedances may require evaluation.

Q: What is the significance of the TLV9151IDBVR's rail-to-rail output capability?

A: Rail-to-rail output means the amplifier can swing its output voltage to within a small margin of both supply rails. This enables maximum signal utilization within the supply voltage range, beneficial for applications requiring full dynamic range. The TLC271AIP's standard output type has more limited output swing.

Q: Is the TLV9151IDBVR suitable for extended temperature applications?

A: Yes. The TLV9151IDBVR operates from -40°C to 125°C, compared to the TLC271AIP's -40°C to 85°C range. The extended upper temperature limit provides thermal margin for high-temperature environments.

Q: Are both devices RoHS and REACH compliant?

A: Yes. Both the TLC271AIP and TLV9151IDBVR are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the inventory status of these devices?

A: The TLC271AIP has 2000 pieces in stock but is classified as Last Time Buy, indicating end-of-life status with no future production. The TLV9151IDBVR has 2339 pieces in stock and Active product status, ensuring continued availability and supply chain stability.

Q: Can I use the TLV9151IDBVR in a breadboard or prototype with the TLC271AIP's footprint?

A: No. The TLV9151IDBVR's SOT-23-5 surface-mount package is incompatible with the TLC271AIP's 8-DIP through-hole footprint. Prototyping requires either a new PCB design or an adapter board. For development, consider using a surface-mount to DIP adapter if available.

Q: What certifications apply to both devices?

A: Both devices are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 and HTSUS 8542.33.0001. These certifications ensure compliance with environmental regulations and export control requirements.