TL331SDBVRCT Equivalent & Substitute Parts

Part Overview

The TL331SDBVRCT is a general-purpose comparator manufactured by Texas Instruments, featuring open-collector, rail-to-rail output in a SOT-23-5 surface mount package. This device operates across a wide supply voltage range of 2V to 36V (single/dual ±1V to ±18V) and is classified as Active product status. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required for design flexibility, inventory management, or supply chain continuity.

Substiute Parts

TL331SDBVRCT

Texas InstrumentsIn Stock: 861TL331SDBVRCT Datasheet

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LMV331SE-7

Diodes IncorporatedIn Stock: 5297LMV331SE-7 Datasheet

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MIC6270YM5-TR

Microchip TechnologyIn Stock: 22911MIC6270YM5-TR Datasheet

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TS391IYLT

STMicroelectronicsIn Stock: 21324TS391IYLT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL331SDBVRCT is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Output Type: Open-Collector configuration (mandatory for functional equivalence)
• Supply Voltage Range: Minimum 2V ~ 36V single supply or ±1V ~ 18V dual supply compatibility
• Package Type: SOT-23-5 surface mount (mechanical compatibility)
• Input Offset Voltage: Maximum 5mV @ 5V (precision requirement)
• Current Output: Minimum 16mA typical (drive capability)

Secondary Compatibility Factors:

• RoHS3 Compliance: All substitutes must meet environmental standards
• Moisture Sensitivity Level: MSL 1 or MSL 3 acceptable for equivalent handling
• Product Status: Active manufacturing status ensures availability

Three substitute parts meet these criteria: LMV331SE-7 (Diodes Incorporated), MIC6270YM5-TR (Microchip Technology), and TS391IYLT (STMicroelectronics). Each maintains open-collector output architecture and operates within the specified supply voltage envelope.

Parameter Comparison

Engineering Selection Recommendations

MIC6270YM5-TR (Microchip Technology) provides the closest electrical and mechanical match to the TL331SDBVRCT. Both devices operate across the identical 2V ~ 36V / ±1V ~ 18V supply range, share SOT-23-5 packaging, maintain 5mV input offset specification, and deliver 20mA typical output current. MSL 1 rating matches the main part. This substitute is recommended for direct pin-compatible replacement in existing designs.

TS391IYLT (STMicroelectronics) qualifies as a functional substitute with identical supply voltage range, SOT-23-5 packaging, and 5mV input offset. Output current of 16mA meets minimum drive requirements. Extended operating temperature range (-40°C to 125°C) and AEC-Q100 automotive qualification provide additional design margin for temperature-sensitive applications. MSL 1 rating ensures equivalent moisture handling.

LMV331SE-7 (Diodes Incorporated) operates within a restricted supply voltage range of 2.7V ~ 5.5V, limiting its substitution applicability to designs not requiring the full 2V ~ 36V envelope of the main part. Package configuration differs (SOT-353 versus SOT-23-5), requiring PCB layout modification. Input offset of 7mV exceeds the 5mV specification. Higher output current capability (84mA) provides design flexibility for high-impedance load applications. MSL 3 rating requires controlled storage conditions (168 hours maximum).

All three substitutes maintain Active product status and ROHS3 compliance, ensuring long-term availability and environmental regulatory adherence.

Frequently Asked Questions (FAQ)

Q: Can LMV331SE-7 replace TL331SDBVRCT in all applications?

A: No. LMV331SE-7 operates only within 2.7V ~ 5.5V supply range, whereas TL331SDBVRCT supports 2V ~ 36V. Applications requiring operation below 2.7V or above 5.5V cannot use LMV331SE-7. Additionally, LMV331SE-7 uses SOT-353 packaging instead of SOT-23-5, requiring PCB redesign.

Q: What is the primary difference between MIC6270YM5-TR and TS391IYLT?

A: Both devices share identical electrical specifications and SOT-23-5 packaging. The key difference is operating temperature range: MIC6270YM5-TR operates -40°C to 85°C, while TS391IYLT extends to -40°C to 125°C. TS391IYLT includes AEC-Q100 automotive qualification. Select TS391IYLT for high-temperature or automotive-grade applications.

Q: Does moisture sensitivity level affect substitution decisions?

A: MSL rating affects storage and handling procedures, not functional performance. TL331SDBVRCT and MIC6270YM5-TR carry MSL 1 (unlimited shelf life). LMV331SE-7 carries MSL 3 (168-hour maximum exposure after packaging). TS391IYLT carries MSL 1. For high-volume manufacturing with extended storage, MSL 1 parts are preferred to reduce moisture-related failures.

Q: Are all substitutes pin-compatible with TL331SDBVRCT?

A: MIC6270YM5-TR and TS391IYLT are pin-compatible, both using SOT-23-5 5-pin configuration. LMV331SE-7 uses SOT-353 packaging with different pin layout, requiring PCB modification and cannot be used as a direct drop-in replacement.

Q: Which substitute offers the highest output current capability?

A: LMV331SE-7 provides 84mA typical output current at 5V, compared to 20mA for TL331SDBVRCT, MIC6270YM5-TR, and 16mA for TS391IYLT. Select LMV331SE-7 only when high output current is required and supply voltage range restriction (2.7V ~ 5.5V) is acceptable.

Q: What is the input offset voltage difference between substitutes?

A: TL331SDBVRCT, MIC6270YM5-TR, and TS391IYLT all specify 5mV maximum input offset at 5V. LMV331SE-7 specifies 7mV, representing a 40% increase in offset error. For precision comparator applications requiring tight input offset tolerance, avoid LMV331SE-7.