TLC271BIP Equivalent & Substitute Parts

Part Overview

The TLC271BIP 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 discontinued production with limited availability. The TLC271BIP operates across a supply voltage range of 4V to 16V and is suitable for applications requiring low input bias current and moderate bandwidth performance in the LinCMOS™ series.

Finding equivalent and substitute parts is necessary due to the Last Time Buy status, which restricts future procurement. Substitutes must maintain functional compatibility while accommodating differences in packaging, performance characteristics, and supply voltage requirements.

Substiute Parts

TLC271BIP

Texas InstrumentsIn Stock: 2050TLC271BIP Datasheet

Current PartRFQ

TLV9151IDBVR

Texas InstrumentsIn Stock: 2372TLV9151IDBVR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLC271BIP is determined by the following critical parameters:

Functional Compatibility Criteria:

• Amplifier Type: General Purpose (single-channel configuration)
• Number of Circuits: 1
• Supply Voltage Range: Minimum 4V, Maximum 16V (substitute must operate within or exceed this range)
• Operating Temperature Range: -40°C to 85°C (substitute must support this minimum range)

Performance Compatibility Criteria:

• Slew Rate: 5.3 V/µs (substitute may exceed this value)
• Gain Bandwidth Product: 2.2 MHz (substitute may exceed this value)
• Input Bias Current: 0.7 pA (substitute may be lower or higher)
• Input Offset Voltage: 390 µV (substitute may be lower or higher)
• Output Current per Channel: 30 mA (substitute must meet or exceed this value)
• Supply Current: 950 µA (substitute may vary)

Regulatory & Compliance Criteria:

• RoHS3 Compliance required
• REACH Unaffected status required

The TLV9151IDBVR qualifies as a manufacturer-recommended substitute because it maintains general-purpose amplifier functionality, supports the required supply voltage range (2.7V to 16V, which encompasses the TLC271BIP range), and exceeds performance specifications in slew rate, bandwidth, and output current while maintaining RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The TLC271BIP is designated Last Time Buy, which restricts future procurement to existing inventory. The TLV9151IDBVR is classified as Active, ensuring long-term availability and continued manufacturing support.

Compliance & Certification: Both the TLC271BIP and TLV9151IDBVR maintain ROHS3 compliance and REACH Unaffected status, satisfying regulatory requirements for industrial and commercial applications.

Performance Enhancement: The TLV9151IDBVR provides superior performance specifications across multiple parameters: slew rate increases from 5.3 V/µs to 20 V/µs, gain bandwidth product increases from 2.2 MHz to 4.5 MHz, and output current capability increases from 30 mA to 75 mA. Input offset voltage improves from 390 µV to 125 µV. Supply current decreases from 950 µA to 560 µA.

Operating Temperature Range: The TLV9151IDBVR extends the maximum operating temperature from 85°C to 125°C, providing broader thermal operating capability.

Packaging Transition: The TLC271BIP uses through-hole 8-DIP packaging, while the TLV9151IDBVR uses surface-mount SOT-23-5 packaging. This transition requires PCB redesign and assembly process modification.

Frequently Asked Questions (FAQ)

Q: Can the TLV9151IDBVR directly replace the TLC271BIP without circuit modifications?

A: Functional substitution is possible because both devices are single-channel general-purpose operational amplifiers with compatible supply voltage ranges (2.7V to 16V for TLV9151IDBVR encompasses 4V to 16V for TLC271BIP). However, packaging differs: TLC271BIP is through-hole 8-DIP while TLV9151IDBVR is surface-mount SOT-23-5. PCB layout and assembly process changes are required. Pin configuration must be verified against datasheets before implementation.

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

A: The TLV9151IDBVR provides enhanced performance: slew rate is 3.8 times faster (20 V/µs vs. 5.3 V/µs), gain bandwidth product is 2.05 times higher (4.5 MHz vs. 2.2 MHz), and output current is 2.5 times greater (75 mA vs. 30 mA). Input offset voltage is significantly lower (125 µV vs. 390 µV). Supply current is reduced by 41% (560 µA vs. 950 µA). Operating temperature range extends to 125°C maximum.

Q: Are there any compatibility concerns with the supply voltage range?

A: No. The TLV9151IDBVR supply voltage range (2.7V to 16V) fully encompasses the TLC271BIP range (4V to 16V). Applications using 4V to 16V supplies will operate within specification for both devices.

Q: What is the significance of the rail-to-rail output specification on the TLV9151IDBVR?

A: Rail-to-rail output capability means the TLV9151IDBVR output voltage can swing closer to the positive and negative supply rails, maximizing usable output voltage swing. The TLC271BIP does not specify this feature. This provides improved signal utilization in low-supply-voltage applications.

Q: Does the input bias current difference affect circuit design?

A: The TLV9151IDBVR has higher input bias current (10 pA vs. 0.7 pA). For most general-purpose applications, this difference is negligible. High-impedance input circuits may require input bias current compensation; verify specific application requirements against datasheet specifications.

Q: What is the moisture sensitivity level (MSL) difference?

A: The TLC271BIP lists MSL as Not Applicable (through-hole package). The TLV9151IDBVR specifies MSL 1 (Unlimited), indicating minimal moisture sensitivity for the surface-mount package. This affects storage and handling requirements for the surface-mount device.

Q: Can existing through-hole PCBs accommodate the TLV9151IDBVR?

A: No. The TLV9151IDBVR requires surface-mount assembly on a redesigned PCB. Through-hole sockets cannot accommodate SOT-23-5 packages. Complete PCB redesign and assembly process modification are necessary.