TLC251ACP Equivalent & Substitute Parts

Part Overview

The TLC251ACP 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 TLC251ACP belongs to the LinCMOS™ series and is designed for applications requiring low-power, general-purpose amplification with a single circuit configuration.

Finding equivalent and substitute parts is necessary due to the Last Time Buy status of the TLC251ACP. Organizations requiring continued supply or new designs must identify compatible alternatives that maintain functional equivalence while meeting current design and manufacturing requirements.

Substiute Parts

TLC251ACP

Texas InstrumentsIn Stock: 941TLC251ACP Datasheet

Current PartRFQ

TLV9151IDBVR

Texas InstrumentsIn Stock: 2372TLV9151IDBVR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLC251ACP is determined by functional equivalence across the following critical parameters:

Functional Criteria:

• Amplifier Type: General Purpose
• Number of Circuits: 1 circuit per package
• Supply Voltage Compatibility: Substitute must operate within or exceed the 1.4 V to 16 V supply range
• Output Type: Functional compatibility with existing circuit topologies

Performance Criteria:

• Slew Rate: Substitute performance must meet or exceed application requirements
• Gain Bandwidth Product: Substitute must support required frequency response
• Input Bias Current: Substitute characteristics must be compatible with input impedance requirements
• Input Offset Voltage: Substitute must maintain acceptable DC accuracy
• Supply Current: Substitute consumption must fit power budget constraints

Physical & Compliance Criteria:

• Mounting compatibility with through-hole or surface-mount PCB designs
• RoHS3 compliance for regulatory alignment
• Operating temperature range suitable for application environment

The TLV9151IDBVR qualifies as a substitute based on matching general-purpose amplifier functionality, single-circuit configuration, and overlapping supply voltage range, while offering enhanced performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The TLC251ACP carries Last Time Buy status, signifying end-of-life production. The TLV9151IDBVR maintains Active product status with 2339 units in stock, ensuring long-term availability and supply chain continuity.

Compliance & Certification: Both devices are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. Both carry ECCN classification EAR99 and HTSUS code 8542.33.0001.

Supply Voltage Compatibility: The TLV9151IDBVR operates within a 2.7 V to 16 V supply range, compared to the TLC251ACP's 1.4 V to 16 V range. Applications operating below 2.7 V require verification of circuit topology compatibility.

Performance Enhancement: The TLV9151IDBVR provides superior performance across multiple parameters: 3.8× higher slew rate (20 V/µs vs. 5.3 V/µs), 2.05× higher gain bandwidth product (4.5 MHz vs. 2.2 MHz), and 41% lower supply current (560 µA vs. 950 µA). These characteristics support higher-speed applications and reduced power consumption.

Package & Mounting Transition: The TLC251ACP uses through-hole 8-DIP packaging, while the TLV9151IDBVR uses surface-mount SOT-23-5 packaging. PCB redesign is required for physical substitution. Organizations requiring through-hole compatibility must evaluate alternative substitutes or implement adapter solutions.

Temperature Range Extension: The TLV9151IDBVR extends operating temperature range to -40°C to 125°C, compared to the TLC251ACP's 0°C to 70°C, supporting broader environmental applications.

Frequently Asked Questions (FAQ)

Q: Can the TLV9151IDBVR directly replace the TLC251ACP without PCB modification?

A: No. The TLC251ACP uses through-hole 8-DIP packaging while the TLV9151IDBVR uses surface-mount SOT-23-5 packaging. Direct socket substitution is not possible. PCB redesign or adapter solutions are required.

Q: What is the minimum supply voltage for the TLV9151IDBVR?

A: The TLV9151IDBVR operates at a minimum supply voltage of 2.7 V. Applications requiring operation below 2.7 V must retain the TLC251ACP or identify alternative parts with lower minimum supply voltage specifications.

Q: Does the TLV9151IDBVR maintain input bias current characteristics similar to the TLC251ACP?

A: The TLV9151IDBVR has a higher input bias current of 10 pA compared to the TLC251ACP's 0.7 pA. Applications with high-impedance input circuits may require circuit topology adjustments to accommodate this difference.

Q: Is the TLV9151IDBVR suitable for low-speed, low-power applications?

A: Yes. The TLV9151IDBVR's 560 µA supply current is 41% lower than the TLC251ACP's 950 µA, making it suitable for power-constrained applications. The enhanced slew rate and bandwidth provide performance headroom for future design iterations.

Q: What compliance certifications apply to both devices?

A: Both the TLC251ACP and TLV9151IDBVR are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8542.33.0001.

Q: Why does the TLV9151IDBVR have a higher input offset voltage specification?

A: The TLV9151IDBVR specifies 125 µV input offset voltage compared to the TLC251ACP's 900 µV. This represents superior DC accuracy performance, reducing offset-related errors in precision applications.

Q: Can the TLV9151IDBVR operate at the TLC251ACP's minimum supply voltage of 1.4 V?

A: No. The TLV9151IDBVR requires a minimum supply voltage of 2.7 V. Applications operating at 1.4 V to 2.6 V must use the TLC251ACP or identify alternative parts with lower minimum supply voltage ratings.

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

A: The TLV9151IDBVR features rail-to-rail output, allowing output voltage swing to approach both positive and negative supply rails. The TLC251ACP does not specify this capability, potentially limiting output voltage range in single-supply applications.