TL331IDBVRG4 Equivalent & Substitute Parts

Part Overview

The TL331IDBVRG4 is a general-purpose comparator IC manufactured by Texas Instruments, featuring open-collector, rail-to-rail output in a SOT-23-5 surface mount package. This device is classified as obsolete, which necessitates 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)
REACH Status	REACH Unaffected
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the TL331IDBVRG4 is determined by the following critical parameters:

Primary Substitution Criteria:

Single comparator element (Number of Elements = 1)
Open-collector output configuration with rail-to-rail capability
Supply voltage range: 2V ~ 36V, ±1V ~ 18V
Input offset voltage maximum: 5mV @ 30V
Input bias current maximum: 0.25µA @ 5V
Output current typical: 20mA
Quiescent current maximum: 700µA
Operating temperature range: -40°C ~ 85°C
Surface mount package: SOT-23-5 (SC-74A, SOT-753)
RoHS3 compliance and MSL Level 1

Substitute Categories:

MFR Recommended Equivalents (Texas Instruments): TL331IDBVR and TL331IDBVT are direct parametric equivalents from the same manufacturer with identical electrical specifications and active product status.

Parametric Equivalent (Automotive Grade): TL331IDBVRQ1 meets all electrical parameters and adds AEC-Q100 automotive qualification for applications requiring automotive-grade components.

Cross-Manufacturer Equivalents: AP331AWG-7 (Diodes Incorporated) and TS391RILT (STMicroelectronics) provide functional equivalence with minor parameter variations within acceptable tolerances for general-purpose comparator applications.

Parameter Comparison

Parameter	TL331IDBVRG4	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)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
Qualification	-	-	AEC-Q100	-	-	-

Engineering Selection Recommendations

Primary Recommendation - Texas Instruments TL331IDBVR: Direct parametric equivalent with identical electrical specifications and active product status. Preferred for direct replacement in existing designs. Available in higher inventory quantities (85,050 pcs).

Secondary Recommendation - Texas Instruments TL331IDBVT: Parametric equivalent with active status and identical electrical performance. Suitable for new designs and production continuity. Inventory availability: 19,300 pcs.

Automotive Applications - Texas Instruments TL331IDBVRQ1: Meets all electrical parameters of the original part with AEC-Q100 automotive qualification. Required for automotive-grade applications. Inventory availability: 6,479 pcs.

Cross-Manufacturer Option - STMicroelectronics TS391RILT: Functional equivalent with extended operating temperature range (-40°C ~ 125°C) and lower quiescent current (1.25mA). Suitable for applications requiring wider temperature operation. Inventory availability: 17,108 pcs.

Alternative Cross-Manufacturer Option - Diodes Incorporated AP331AWG-7: Functional equivalent with higher quiescent current (2.5mA) and narrower operating temperature range (0°C ~ 70°C). Suitable for commercial-grade applications with moderate temperature requirements. Inventory availability: 72,400 pcs.

Frequently Asked Questions (FAQ)

Q: Can TL331IDBVR be used as a direct replacement for TL331IDBVRG4? A: Yes. TL331IDBVR is a direct parametric equivalent with identical electrical specifications, supply voltage range, output characteristics, and package configuration. The primary difference is product status: TL331IDBVRG4 is obsolete while TL331IDBVR is active.

Q: What is the difference between TL331IDBVRQ1 and TL331IDBVR? A: TL331IDBVRQ1 includes AEC-Q100 automotive qualification and is designated for automotive-grade applications. Electrical parameters are identical. Select TL331IDBVRQ1 for automotive designs; use TL331IDBVR for general industrial and commercial applications.

Q: Are cross-manufacturer parts (AP331AWG-7, TS391RILT) fully compatible? A: Cross-manufacturer parts meet the core functional requirements and share the same supply voltage range, input offset voltage, and package footprint. However, minor parameter variations exist: AP331AWG-7 has higher quiescent current (2.5mA vs. 700µA) and narrower temperature range (0°C ~ 70°C); TS391RILT has lower quiescent current (1.25mA) and extended temperature range (-40°C ~ 125°C). Evaluate application-specific requirements before selection.

Q: Does package compatibility differ between substitutes? A: All recommended substitutes use SOT-23-5 or SOT-25 packages with SC-74A, SOT-753 case designations. Physical footprints are compatible for PCB placement. AP331AWG-7 uses SOT-25 packaging; verify PCB layout compatibility if switching from SOT-23-5 designs.

Q: Are all substitutes RoHS3 compliant? A: Yes. All recommended substitute parts are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating and REACH Unaffected status, meeting environmental and regulatory requirements.

Q: Which substitute offers the best inventory availability? A: Diodes Incorporated AP331AWG-7 has the highest inventory (72,400 pcs), followed by Texas Instruments TL331IDBVR (85,050 pcs). For immediate procurement needs, both options provide substantial stock levels.

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