TL331IDBVTE4 Equivalent & Substitute Parts

Part Overview

The TL331IDBVTE4 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 single differential input element. The TL331IDBVTE4 carries an obsolete product status, making identification of active equivalent and substitute parts essential for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Linear
Type	General Purpose Comparator
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)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts for the TL331IDBVTE4 are classified based on strict electrical and mechanical parameter alignment. The primary substitution criteria are:

Critical Matching Parameters:

Output Type: Open-Collector, Rail-to-Rail configuration
Voltage Supply Range: 2V ~ 36V, ±1V ~ 18V
Voltage - Input Offset (Max): 5mV @ 30V
Current - Input Bias (Max): 0.25µA @ 5V
Package / Case: SC-74A, SOT-753
Mounting Type: Surface Mount
Supplier Device Package: SOT-23-5
RoHS Status: ROHS3 Compliant

Grouping Categories:

Direct Manufacturer Equivalents (Texas Instruments): Parts TL331IDBVR, TL331KDBVT, TL331IDBVRQ1, and TL331IDBVT maintain identical electrical specifications and package configuration. These parts differ only in product status (active vs. obsolete) and temperature rating or qualification grade.

Manufacturer-Recommended Cross-Reference (Diodes Incorporated): The AP331AWG-7 is designated as a manufacturer-recommended substitute. While maintaining core electrical parameters, it exhibits variations in current output (16mA vs. 20mA typical) and quiescent current (2.5mA vs. 700µA maximum), with a narrower operating temperature range (0°C ~ 70°C).

Manufacturer-Recommended Cross-Reference (STMicroelectronics): The TS391RILT is designated as a manufacturer-recommended substitute. It maintains core electrical parameters with variations in quiescent current (1.25mA vs. 700µA maximum) and an extended operating temperature range (-40°C ~ 125°C).

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage Supply	Input Offset (Max)	Input Bias (Max)	Output Current (Typ)	Quiescent Current (Max)	Operating Temp	Package	Inventory
TL331IDBVTE4	Texas Instruments	Obsolete	2V ~ 36V, ±1V ~ 18V	5mV @ 30V	0.25µA @ 5V	20mA	700µA	-40°C ~ 85°C	SOT-23-5	772 Pcs
TL331IDBVR	Texas Instruments	Active	2V ~ 36V, ±1V ~ 18V	5mV @ 30V	0.25µA @ 5V	20mA	700µA	-40°C ~ 85°C	SOT-23-5	85050 Pcs
TL331KDBVT	Texas Instruments	Active	2V ~ 36V, ±1V ~ 18V	5mV @ 30V	0.25µA @ 5V	20mA	700µA	-40°C ~ 105°C	SOT-23-5	10100 Pcs
TL331IDBVRQ1	Texas Instruments	Active	2V ~ 36V, ±1V ~ 18V	5mV @ 30V	0.25µA @ 5V	20mA	700µA	-40°C ~ 85°C	SOT-23-5	6479 Pcs
TL331IDBVT	Texas Instruments	Active	2V ~ 36V, ±1V ~ 18V	5mV @ 30V	0.25µA @ 5V	20mA	700µA	-40°C ~ 85°C	SOT-23-5	19300 Pcs
AP331AWG-7	Diodes Incorporated	Active	2V ~ 36V, ±1V ~ 18V	8mV @ 5V	0.4µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	SOT-25	72400 Pcs
TS391RILT	STMicroelectronics	Active	2V ~ 36V, ±1V ~ 18V	5mV @ 30V	0.25µA @ 5V	16mA @ 5V	1.25mA	-40°C ~ 125°C	SOT-23-5	17108 Pcs

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

The TL331IDBVR, TL331IDBVT, and TL331KDBVT are direct parametric equivalents manufactured by Texas Instruments. All three maintain identical electrical specifications to the obsolete TL331IDBVTE4. Selection among these three should be based on product availability and packaging format. The TL331IDBVT offers the highest inventory level (19300 Pcs) with standard cut-tape and digi-reel packaging. The TL331KDBVT provides an extended operating temperature range (-40°C ~ 105°C) for applications requiring higher temperature performance.

For Automotive Applications:

The TL331IDBVRQ1 is qualified to AEC-Q100 automotive standards and carries active product status. This variant is suitable for automotive-grade applications requiring comparable electrical performance to the original part.

For Cross-Manufacturer Substitution:

The AP331AWG-7 (Diodes Incorporated) and TS391RILT (STMicroelectronics) are manufacturer-recommended cross-references. Both maintain the core supply voltage range and input offset specifications. The AP331AWG-7 operates within a narrower temperature range (0°C ~ 70°C) and exhibits higher quiescent current consumption (2.5mA). The TS391RILT provides extended temperature operation (-40°C ~ 125°C) with reduced quiescent current (1.25mA), making it suitable for low-power or wide-temperature applications.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can I directly replace TL331IDBVTE4 with TL331IDBVR or TL331IDBVT?

A: Yes. Both TL331IDBVR and TL331IDBVT are parametric equivalents with identical electrical specifications and SOT-23-5 packaging. The primary difference is product status (active vs. obsolete) and packaging format availability.

Q: What is the difference between TL331KDBVT and TL331IDBVT?

A: The TL331KDBVT extends the operating temperature range to -40°C ~ 105°C compared to -40°C ~ 85°C for the TL331IDBVT. All other electrical parameters remain identical. Select TL331KDBVT for applications requiring higher temperature operation.

Q: Is TL331IDBVRQ1 suitable for my application?

A: TL331IDBVRQ1 is qualified to AEC-Q100 automotive standards and maintains identical electrical specifications to the original part. Use this variant if your application requires automotive-grade qualification.

Q: Can I use AP331AWG-7 as a substitute?

A: AP331AWG-7 is a manufacturer-recommended cross-reference from Diodes Incorporated. It maintains the same supply voltage range and input offset specification. However, it exhibits lower typical output current (16mA vs. 20mA), higher quiescent current (2.5mA vs. 700µA maximum), and a narrower operating temperature range (0°C ~ 70°C). Verify compatibility with your specific application requirements before substitution.

Q: What are the advantages of TS391RILT over the TL331 variants?

A: The TS391RILT from STMicroelectronics maintains core electrical parameters while offering extended operating temperature range (-40°C ~ 125°C) and significantly lower quiescent current (1.25mA vs. 700µA maximum). These characteristics make it suitable for low-power applications or designs requiring wider temperature operation.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the original TL331IDBVTE4.

Q: What packaging formats are available for these substitutes?

A: All Texas Instruments variants (TL331IDBVR, TL331KDBVT, TL331IDBVRQ1, TL331IDBVT) are supplied in SOT-23-5 surface-mount packages with cut-tape and digi-reel options. The AP331AWG-7 uses SOT-25 packaging. The TS391RILT uses SOT-23-5 packaging with cut-tape and digi-reel options.

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