AZV331KSTR-G1 Equivalent & Substitute Parts

Part Overview

The AZV331KSTR-G1 is a general-purpose comparator IC manufactured by Diodes Incorporated, featuring open-collector output in SC-70-5 surface mount packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The device operates across a 2.5V to 5.5V supply range with a maximum input offset voltage of 7mV and propagation delay of 450ns, suitable for general-purpose comparison applications in compact form factors.

Key Parameters

Parameter	Value
Manufacturer Part Number	AZV331KSTR-G1
Manufacturer	Diodes Incorporated
Product Category	Linear - Comparator
Type	General Purpose
Output Type	Open-Collector
Package / Case	5-TSSOP, SC-70-5, SOT-353
Mounting Type	Surface Mount
Voltage - Supply, Single/Dual (±)	2.5V ~ 5.5V
Voltage - Input Offset (Max)	7mV @ 5V
Current - Input Bias (Max)	0.25µA @ 5V
Current - Output (Typ)	84mA @ 5V
Current - Quiescent (Max)	120µA
Propagation Delay (Max)	450ns
Operating Temperature	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the AZV331KSTR-G1 is determined by the following critical parameters:

Electrical Compatibility Requirements:

Output type: Open-Collector
Supply voltage range: Must support minimum 2.5V operation
Input offset voltage: Maximum 7mV @ 5V
Input bias current: Maximum 0.25µA @ 5V
Output current capability: Minimum 84mA @ 5V
Quiescent current: Maximum 120µA
Propagation delay: Maximum 450ns

Package and Mechanical Requirements:

Surface mount packaging (SC-70-5, SOT-353, or equivalent 5-pin small outline packages)
Pin-compatible or functionally equivalent pinout

Compliance Requirements:

RoHS3 compliance
MSL rating suitable for manufacturing processes

Substitute parts are grouped into two categories: direct pin-compatible replacements in SC-70-5/SOT-353 packaging, and functionally equivalent alternatives in different surface mount packages (SOT-23-5) that require PCB layout modification. Through-hole alternatives are provided for applications where package change is acceptable.

Parameter Comparison

Parameter	AZV331KSTR-G1	LMV331SE-7	LMV331IDBVR	LMV331IDBVT	LMV331QDBVRQ1	LT1011CN8#PBF	LT1011IS8#TRPBF
Manufacturer	Diodes Inc.	Diodes Inc.	Texas Instruments	Texas Instruments	Texas Instruments	Analog Devices	Analog Devices
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Output Type	Open-Collector	Open-Collector	Open-Collector	Open-Collector	Open-Collector	Open-Collector	Open-Collector
Voltage - Supply, Single/Dual (±)	2.5V ~ 5.5V	2.7V ~ 5.5V	2.7V ~ 5.5V	2.7V ~ 5.5V	2.7V ~ 5.5V	3V ~ 36V, ±1.5V ~ 18V	3V ~ 36V, ±1.5V ~ 18V
Voltage - Input Offset (Max)	7mV @ 5V	7mV @ 5V	7mV @ 5V	7mV @ 5V	7mV @ 5V	2mV @ ±15V	2mV @ ±15V
Current - Input Bias (Max)	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.025µA @ 5V	0.065µA @ ±15V	0.065µA @ ±15V
Current - Output (Typ)	84mA @ 5V	84mA @ 5V	84mA @ 5V	84mA @ 5V	84mA @ 5V	50mA	50mA
Current - Quiescent (Max)	120µA	120µA	150µA	150µA	150µA	4mA	4mA
Propagation Delay (Max)	450ns	450ns	600ns	600ns	600ns	—	—
Operating Temperature	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	0°C ~ 70°C	-40°C ~ 85°C
Package / Case	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	8-DIP (0.300", 7.62mm)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Through Hole	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Pin-Compatible Replacement (Recommended for Obsolete Part Replacement):

LMV331SE-7 is the primary substitute for AZV331KSTR-G1. Both parts are manufactured by Diodes Incorporated and share identical SC-70-5 packaging and pinout. The LMV331SE-7 is active in production with superior operating temperature range (-40°C to 125°C versus -40°C to 85°C), matching electrical specifications, and equivalent MSL rating. This part requires no PCB layout modification.

Surface Mount Alternatives (SOT-23-5 Package):

LMV331IDBVR, LMV331IDBVT, and LMV331QDBVRQ1 are functionally equivalent comparators in SOT-23-5 packaging. These parts maintain electrical compatibility with slightly higher quiescent current (150µA maximum versus 120µA) and propagation delay (600ns maximum versus 450ns). LMV331QDBVRQ1 includes automotive qualification (AEC-Q100) and extended temperature range (-40°C to 125°C), with lower input bias current (0.025µA). All three require PCB layout modification due to different pinout and package footprint.

Through-Hole Alternatives:

LT1011CN8#PBF (8-DIP) and LT1011IS8#TRPBF (8-SOIC) are functionally equivalent comparators from Analog Devices with broader supply voltage range (3V to 36V or ±1.5V to ±18V). These parts feature superior input offset voltage (2mV) and CMRR (115dB) but lower output current capability (50mA) and higher quiescent current (4mA). LT1011CN8#PBF is limited to 0°C to 70°C operating temperature. Both require significant PCB redesign.

Selection Criteria:

For direct replacement of obsolete AZV331KSTR-G1 in existing designs, use LMV331SE-7. For new designs or redesigns accepting package change, select based on temperature range requirements, supply voltage range, and output current needs. All recommended substitutes maintain RoHS3 compliance and open-collector output architecture.

Frequently Asked Questions (FAQ)

Q: Can LMV331SE-7 be used as a direct replacement for AZV331KSTR-G1?

A: Yes. LMV331SE-7 is pin-compatible and functionally equivalent, with identical SC-70-5 packaging and pinout. No PCB modification is required. The part is active in production and offers extended temperature range.

Q: What is the difference between SC-70-5 and SOT-23-5 packages?

A: SC-70-5 (also called SOT-353) and SOT-23-5 are both 5-pin surface mount packages but have different pinouts and footprints. Substituting between them requires PCB layout modification and verification of pin assignments.

Q: Why do LMV331IDBVR and LMV331IDBVT have different propagation delays than AZV331KSTR-G1?

A: LMV331IDBVR and LMV331IDBVT have maximum propagation delay of 600ns compared to 450ns for AZV331KSTR-G1. This difference is within the same product family but reflects different manufacturing processes or test conditions. Verify timing requirements in your application before substitution.

Q: Is LMV331QDBVRQ1 suitable for automotive applications?

A: LMV331QDBVRQ1 carries AEC-Q100 automotive qualification and is suitable for automotive-grade applications. It features extended temperature range (-40°C to 125°C) and lower input bias current (0.025µA) compared to standard versions.

Q: Can LT1011 series parts replace AZV331KSTR-G1?

A: LT1011 series parts are functionally equivalent but require significant PCB redesign due to different packaging (8-DIP or 8-SOIC versus SC-70-5). They offer broader supply voltage range and superior input offset voltage but lower output current capability. Use only if package change is acceptable in your design.

Q: What does MSL rating mean for these comparators?

A: Moisture Sensitivity Level (MSL) indicates the maximum time a component can be exposed to ambient conditions before soldering. AZV331KSTR-G1 and LMV331SE-7 have MSL 3 (168 hours), while LMV331 SOT-23-5 variants and LT1011 series have MSL 1 (unlimited). Higher MSL ratings provide greater manufacturing flexibility.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All recommended substitute parts listed are RoHS3 compliant, matching the compliance status of AZV331KSTR-G1.

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