TL331IDBVRE4 Equivalent & Substitute Parts

Part Overview

The TL331IDBVRE4 is a general-purpose comparator IC manufactured by Texas Instruments, housed in a SOT-23-5 surface mount package. This device features open-collector, rail-to-rail output configuration with a supply voltage range of 2V to 36V (single) or ±1V to ±18V (dual). The TL331IDBVRE4 is currently classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Linear Comparator
Type	General Purpose
Number of Elements	1
Output Type	Open-Collector, Rail-to-Rail
Voltage - Supply, Single/Dual (±)	2V ~ 36V, ±1V ~ 18V
Voltage - Input Offset (Max)	5mV @ 30V
Current - Input Bias (Max)	0.25µA @ 5V
Current - Output (Typ)	20mA
Current - Quiescent (Max)	700µA
Operating Temperature	-40°C ~ 85°C
Package / Case	SC-74A, SOT-753
Mounting Type	Surface Mount
Supplier Device Package	SOT-23-5
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the TL331IDBVRE4 are classified based on strict electrical and mechanical parameter alignment:

Parametric Equivalents (Texas Instruments TL331 Series): Parts TL331IDBVR, TL331IDBVRQ1, and TL331IDBVT maintain identical electrical specifications across all critical parameters: supply voltage range (2V ~ 36V, ±1V ~ 18V), input offset voltage (5mV @ 30V), input bias current (0.25µA @ 5V), output current (20mA typical), quiescent current (700µA maximum), package type (SOT-23-5), and RoHS/MSL compliance. These parts differ only in product status (active vs. obsolete) and packaging format (Cut Tape & Digi-Reel vs. standard). TL331IDBVRQ1 includes automotive-grade qualification (AEC-Q100) for applications requiring automotive reliability standards.

Manufacturer-Recommended Alternatives: AP331AWG-7 (Diodes Incorporated) and TS391RILT (STMicroelectronics) are cross-manufacturer substitutes that maintain functional equivalence within specified tolerance bands. Both support the same supply voltage range and package footprint (SOT-23-5). Differences include output type variations (CMOS, DTL, ECL, MOS, TTL vs. open-collector rail-to-rail), input offset voltage (8mV @ 5V for AP331AWG-7), quiescent current (2.5mA for AP331AWG-7, 1.25mA for TS391RILT), and operating temperature ranges.

Key Parameters Determining Substitution:

Supply voltage compatibility (2V ~ 36V, ±1V ~ 18V)
Output type and drive capability (20mA typical output current)
Input offset voltage specification (5mV @ 30V)
Package type (SOT-23-5 / SC-74A)
Operating temperature range (-40°C ~ 85°C minimum)
RoHS3 compliance and MSL rating

Parameter Comparison

Parameter	TL331IDBVRE4	TL331IDBVR	TL331IDBVRQ1	TL331IDBVT	AP331AWG-7	TS391RILT
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Diodes Incorporated	STMicroelectronics
Product Status	Obsolete	Active	Active	Active	Active	Active
Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Number of Elements	1	1	1	1	1	1
Output Type	Open-Collector, Rail-to-Rail	Open-Collector, Rail-to-Rail	Open-Collector, Rail-to-Rail	Open-Collector, Rail-to-Rail	CMOS, DTL, ECL, MOS, Open-Collector, TTL	CMOS, DTL, ECL, MOS, TTL
Voltage - Supply, Single/Dual (±)	2V ~ 36V, ±1V ~ 18V	2V ~ 36V, ±1V ~ 18V	2V ~ 36V, ±1V ~ 18V	2V ~ 36V, ±1V ~ 18V	2V ~ 36V, ±1V ~ 18V	2V ~ 36V, ±1V ~ 18V
Voltage - Input Offset (Max)	5mV @ 30V	5mV @ 30V	5mV @ 30V	5mV @ 30V	8mV @ 5V	5mV @ 30V
Current - Input Bias (Max)	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.4µA @ 5V	0.25µA @ 5V
Current - Output (Typ)	20mA	20mA	20mA	20mA	16mA @ 5V	16mA @ 5V
Current - Quiescent (Max)	700µA	700µA	700µA	700µA	2.5mA	1.25mA
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 125°C
Package / Case	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Supplier Device Package	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	SOT-25	SOT-23-5
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Automotive Grade / AEC-Q100	—	—	Yes	—	—	—

Engineering Selection Recommendations

Primary Substitutes (Texas Instruments TL331 Series): For direct replacement of the obsolete TL331IDBVRE4, select TL331IDBVR or TL331IDBVT. Both maintain identical electrical specifications and are currently in active production status with substantial inventory availability (85,050 and 19,300 units respectively). These parts are fully compatible with existing PCB layouts and require no circuit modifications. TL331IDBVRQ1 is the appropriate selection for automotive applications requiring AEC-Q100 qualification, with 6,479 units in stock.

Cross-Manufacturer Alternatives: TS391RILT (STMicroelectronics) provides functional equivalence with extended operating temperature range (-40°C ~ 125°C) and lower quiescent current (1.25mA vs. 700µA), beneficial for temperature-critical or low-power applications. AP331AWG-7 (Diodes Incorporated) is suitable for applications where the reduced operating temperature range (0°C ~ 70°C) and higher quiescent current (2.5mA) are acceptable trade-offs. Both alternatives maintain RoHS3 compliance and MSL-1 rating.

Compliance Considerations: All substitute parts maintain ROHS3 compliance, REACH unaffected status, and MSL-1 (unlimited) moisture sensitivity rating, ensuring regulatory and environmental compatibility with the original TL331IDBVRE4 specification.

Frequently Asked Questions (FAQ)

Q: Can TL331IDBVR directly replace TL331IDBVRE4 without circuit modifications?

A: Yes. TL331IDBVR is a parametric equivalent with identical electrical specifications, supply voltage range, output type, and package footprint (SOT-23-5). The only difference is product status (active vs. obsolete) and packaging format. No circuit modifications are required.

Q: What is the difference between TL331IDBVRQ1 and other TL331 variants?

A: TL331IDBVRQ1 includes automotive-grade qualification (AEC-Q100) certification, making it suitable for automotive applications. Electrical specifications remain identical to TL331IDBVR and TL331IDBVT. Select this variant if your application requires automotive reliability standards.

Q: Can TS391RILT replace TL331IDBVRE4 in all applications?

A: TS391RILT is functionally equivalent within the specified parameter ranges but differs in quiescent current (1.25mA vs. 700µA) and operating temperature range (-40°C ~ 125°C vs. -40°C ~ 85°C). It is suitable for applications where these differences are acceptable. Verify output type compatibility (CMOS, DTL, ECL, MOS, TTL vs. open-collector rail-to-rail) with your circuit design.

Q: Is AP331AWG-7 suitable for low-temperature applications?

A: No. AP331AWG-7 has a restricted operating temperature range of 0°C ~ 70°C, making it unsuitable for applications requiring -40°C operation. Use TL331IDBVR, TL331IDBVRQ1, TL331IDBVT, or TS391RILT for extended low-temperature performance.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (TL331IDBVR, TL331IDBVRQ1, TL331IDBVT, AP331AWG-7, and TS391RILT) are ROHS3 compliant with MSL-1 (unlimited) moisture sensitivity rating, matching the original TL331IDBVRE4 specification.

Q: What is the difference between SOT-23-5 and SOT-25 packages?

A: Both are surface mount packages with identical pin count and footprint compatibility for this comparator application. AP331AWG-7 uses SOT-25 designation while other parts use SOT-23-5; both refer to the same SC-74A physical package. PCB layout compatibility is maintained across all listed parts.

Q: Which substitute offers the lowest quiescent current?

A: TS391RILT offers the lowest quiescent current at 1.25mA maximum, compared to 700µA for TL331 variants and 2.5mA for AP331AWG-7. Select TS391RILT for power-sensitive applications where reduced standby current is critical.

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