TLV2231CDBVT Equivalent & Substitute Parts

Part Overview

The TLV2231CDBVT is a general-purpose operational amplifier manufactured by Texas Instruments, designed for rail-to-rail applications in the LinCMOS™ series. This device is packaged in SOT-23-5 (SC-74A) surface mount configuration and operates across a 2.7 V to 10 V supply range. The part is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring this amplifier topology.

Substiute Parts

TLV2231CDBVT

Texas InstrumentsIn Stock: 1553TLV2231CDBVT Datasheet

Current PartRFQ

TLV2231IDBVR

Texas InstrumentsIn Stock: 3172TLV2231IDBVR Datasheet

MFR RecommendedRFQ

TS9511ILT

STMicroelectronicsIn Stock: 5996TS9511ILT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLV2231CDBVT is determined by the following critical parameters:

Mandatory Matching Criteria:

• Amplifier Type: General Purpose
• Number of Circuits: 1
• Output Type: Rail-to-Rail
• Package / Case: SC-74A, SOT-753 (SOT-23-5)
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Parameter Variations: Substitute parts may differ in slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, output current capability, and operating temperature range, provided the substitute meets or exceeds the functional requirements of the application and maintains electrical compatibility within the specified supply voltage range (2.7 V minimum to 10 V maximum).

Two substitute parts are identified: TLV2231IDBVR (Texas Instruments, same base product with extended temperature range and Active status) and TS9511ILT (STMicroelectronics, alternative manufacturer with enhanced performance specifications).

Parameter Comparison

Engineering Selection Recommendations

TLV2231IDBVR (Texas Instruments): This substitute is the manufacturer-recommended equivalent. It maintains identical electrical specifications (slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current) while offering extended operating temperature range (-40°C to 85°C versus 0°C to 70°C) and Active product status. This part is suitable for direct replacement in applications where the TLV2231CDBVT is specified, with the added benefit of broader temperature operation and continued manufacturing support.

TS9511ILT (STMicroelectronics): This alternative substitute provides cross-manufacturer compatibility with identical package and mounting specifications. Performance differences include higher gain bandwidth product (3 MHz versus 2 MHz), higher input bias current (30 nA versus 1 pA), slightly higher input offset voltage (800 µV versus 710 µV), reduced output current capability (20 mA versus 50 mA), and extended operating temperature range (-40°C to 125°C). Selection of this part is appropriate for applications where higher bandwidth is beneficial and output current requirements do not exceed 20 mA. The extended temperature range supports operation in more demanding thermal environments.

Both substitutes maintain ROHS3 compliance, MSL Level 1 rating, and identical package configuration (SOT-23-5), ensuring mechanical and environmental compatibility with existing designs.

Frequently Asked Questions (FAQ)

Q: Can TLV2231IDBVR be used as a direct replacement for TLV2231CDBVT?

A: Yes. The TLV2231IDBVR is electrically identical to the TLV2231CDBVT across all critical performance parameters (slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current). Both use the same SOT-23-5 package and mounting configuration. The primary differences are extended operating temperature range and Active product status, which make it a suitable direct replacement.

Q: What are the key differences between TLV2231IDBVR and TS9511ILT?

A: Both parts share identical package configuration and rail-to-rail output type. The TLV2231IDBVR maintains the original electrical specifications of the TLV2231CDBVT, while the TS9511ILT offers higher gain bandwidth product (3 MHz versus 2 MHz) but with reduced output current capability (20 mA versus 50 mA). The TS9511ILT also has higher input bias current (30 nA versus 1 pA). Selection depends on application requirements for bandwidth and output drive capability.

Q: Are all three parts compatible with the same PCB layout?

A: Yes. All three parts—TLV2231CDBVT, TLV2231IDBVR, and TS9511ILT—use the SC-74A SOT-753 package (SOT-23-5), which is a five-pin surface mount configuration. PCB footprints and pin assignments are identical, allowing direct substitution without layout modifications.

Q: What is the significance of the Last Time Buy status for TLV2231CDBVT?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of the TLV2231CDBVT and will no longer manufacture this specific part number. Existing inventory will be depleted, and future availability cannot be guaranteed. Transitioning to TLV2231IDBVR (the Active equivalent) or TS9511ILT ensures long-term supply chain continuity.

Q: Can TS9511ILT be used in applications requiring 50 mA output current?

A: No. The TS9511ILT is rated for 20 mA maximum output current per channel, while the TLV2231CDBVT and TLV2231IDBVR are rated for 50 mA. Applications requiring output currents between 20 mA and 50 mA must use TLV2231IDBVR or remain with TLV2231CDBVT (while available).

Q: Are all three parts RoHS3 compliant?

A: Yes. TLV2231CDBVT, TLV2231IDBVR, and TS9511ILT are all ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), meeting environmental and regulatory requirements for commercial and industrial applications.

Q: What is the operating temperature range difference, and does it affect substitution?

A: TLV2231CDBVT operates from 0°C to 70°C, TLV2231IDBVR from -40°C to 85°C, and TS9511ILT from -40°C to 125°C. For applications operating within the 0°C to 70°C range, all three parts are suitable. For applications requiring operation below 0°C or above 70°C, only TLV2231IDBVR or TS9511ILT are appropriate.