LMV321RIYLT Equivalent & Substitute Parts

Part Overview

The LMV321RIYLT is a general-purpose operational amplifier manufactured by STMicroelectronics, classified as a linear amplifier integrated circuit. This single-circuit, rail-to-rail output device is packaged in SOT-23-5 surface mount configuration and operates across a supply voltage range of 2.7 V to 6 V with an operating temperature range of -40°C to 125°C. The device holds Active product status and carries AEC-Q100 automotive qualification. Equivalent and substitute parts are identified to address inventory availability, alternative sourcing requirements, or specific application constraints while maintaining functional compatibility within defined electrical and mechanical parameters.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Slew Rate	0.45	V/µs
Gain Bandwidth Product	1.3	MHz
Current - Input Bias	16	nA
Voltage - Input Offset	100	µV
Current - Supply	162	µA
Current - Output / Channel	48	mA
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	6	V
Operating Temperature Range	-40 to 125	°C
Mounting Type	Surface Mount	—
Package / Case	SC-74A, SOT-753	—
Supplier Device Package	SOT-23-5	—
Grade	Automotive	—
Qualification	AEC-Q100	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LMV321RIYLT is determined by strict alignment of the following critical parameters: single-circuit configuration, rail-to-rail output topology, general-purpose amplifier classification, surface mount technology, and SOT-23-5 package compatibility. The supply voltage range must encompass the minimum 2.7 V and maximum 6 V specifications of the primary device. Operating temperature range, slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current are secondary parameters that define performance boundaries for substitution eligibility.

Substitute parts are grouped into two categories:

Category A: Direct SOT-23-5 Package Equivalents — Parts maintaining identical SOT-23-5 packaging with electrical parameters within acceptable operational margins.

Category B: Alternative Package Variants — Parts with equivalent electrical performance but different package configurations (SOT-25, 5-TSOP) that require mechanical design consideration.

Parameter Comparison

Parameter	LMV321RIYLT (Main)	LMV321IDBVT	LMV321M5/NOPB	LMV321M5X/NOPB	LMV321SN3T1G	AZV321KTR-G1	LMV321IDBVR	LMV321WG-7	LMV931Q1MF/NOPB
Manufacturer	STMicroelectronics	Texas Instruments	Texas Instruments	Texas Instruments	onsemi	Diodes Incorporated	UMW	Diodes Incorporated	Texas Instruments
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	Voltage Feedback	General Purpose	General Purpose
Number of Circuits	1	1	1	1	1	1	1	1	1
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	0.45	1	1	1	1	1	—	1	0.42
Gain Bandwidth Product (MHz)	1.3	1	1	1	1	1	1	1	1.5
Current - Input Bias (nA)	16	15	15	15	1	250	10 pA	15	14
Voltage - Input Offset (µV)	100	1700	1700	1700	1700	1700	800	1700	1000
Current - Supply (µA)	162	130	130	130	130	130	45	110	116
Current - Output / Channel (mA)	48	—	160	160	160	160	25	90	—
Voltage - Supply Span Min (V)	2.7	2.7	2.7	2.7	2.7	2.7	2.1	2.7	1.8
Voltage - Supply Span Max (V)	6	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5
Operating Temperature Range (°C)	-40 to 125	-40 to 125	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-25 to 85	-40 to 85	-40 to 125
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SOT-23-5 Thin, TSOT-23-5	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753
Supplier Device Package	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	5-TSOP	SOT-23-5	SOT-23-5	SOT-25	SOT-23-5
Grade	Automotive	—	—	—	—	—	—	—	Automotive
Qualification	AEC-Q100	—	—	—	—	—	—	—	AEC-Q100
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	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)	3 (168 Hours)	1 (Unlimited)	3 (168 Hours)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitutes (Direct Compatibility)

LMV321IDBVT, LMV321M5/NOPB, and LMV321M5X/NOPB are direct substitutes manufactured by Texas Instruments. These devices maintain SOT-23-5 packaging, single-circuit general-purpose amplifier configuration, and rail-to-rail output topology. All three operate within the 2.7 V to 5.5 V supply range and -40°C to 85°C temperature window. The LMV321IDBVT extends the upper temperature limit to 125°C, matching the primary device specification. LMV321M5/NOPB and LMV321M5X/NOPB are functionally identical variants with identical electrical specifications and MSL-1 moisture sensitivity rating.

LMV321SN3T1G, manufactured by onsemi, provides equivalent electrical performance in a 5-TSOP thin package variant. This device maintains SOT-23-5 electrical compatibility while offering a thinner profile suitable for space-constrained applications. Operating temperature range is -40°C to 85°C.

Secondary Substitutes (Performance Variants)

LMV931Q1MF/NOPB, manufactured by Texas Instruments, carries automotive grade and AEC-Q100 qualification matching the primary device. This substitute operates across -40°C to 125°C and provides enhanced gain bandwidth product of 1.5 MHz. Supply voltage range is 1.8 V to 5.5 V, extending lower voltage operation capability.

AZV321KTR-G1, manufactured by Diodes Incorporated, provides general-purpose amplifier functionality in SOT-23-5 packaging with 1 MHz gain bandwidth product and 1 V/µs slew rate. Operating temperature range is -40°C to 85°C. MSL-3 moisture sensitivity requires controlled storage conditions.

LMV321IDBVR, manufactured by UMW, operates across 2.1 V to 5.5 V supply range with reduced supply current of 45 µA. Operating temperature range is -25°C to 85°C. This device is classified as voltage feedback amplifier rather than general purpose.

LMV321WG-7, manufactured by Diodes Incorporated, is packaged in SOT-25 configuration rather than SOT-23-5. This alternative package requires PCB layout modification. MSL-3 moisture sensitivity applies.

Automotive Applications

For applications requiring automotive qualification and AEC-Q100 compliance, LMV931Q1MF/NOPB is the qualified substitute. The primary device LMV321RIYLT and LMV931Q1MF/NOPB both carry automotive grade designation and AEC-Q100 qualification.

Compliance and Regulatory Status

All substitute parts maintain ROHS3 compliance and REACH unaffected status. All devices are classified under ECCN EAR99 and HTSUS 8542.33.0001.

Frequently Asked Questions (FAQ)

Q: Can LMV321M5/NOPB and LMV321M5X/NOPB be used interchangeably with LMV321RIYLT?

A: Yes. Both Texas Instruments variants maintain identical electrical specifications, SOT-23-5 packaging, single-circuit general-purpose amplifier configuration, and rail-to-rail output topology. Supply voltage range is 2.7 V to 5.5 V, and operating temperature range is -40°C to 85°C. Both carry MSL-1 moisture sensitivity rating.

Q: What is the primary difference between LMV321IDBVT and LMV321M5/NOPB?

A: Both are Texas Instruments general-purpose amplifiers in SOT-23-5 packaging with identical electrical performance. The LMV321IDBVT extends the upper operating temperature limit to 125°C, matching the primary device specification. LMV321M5/NOPB operates to 85°C maximum.

Q: Is LMV321SN3T1G compatible with standard SOT-23-5 PCB layouts?

A: LMV321SN3T1G is packaged in 5-TSOP thin variant (TSOT-23-5) rather than standard SOT-23-5. While pin configuration and electrical function are equivalent, the thinner profile may require PCB footprint verification. Consult device datasheets for mechanical dimensions.

Q: Can LMV321WG-7 replace LMV321RIYLT in existing designs?

A: LMV321WG-7 is packaged in SOT-25 configuration, not SOT-23-5. This requires PCB layout modification and footprint redesign. Electrical performance is equivalent within specified parameters. MSL-3 moisture sensitivity requires controlled storage conditions compared to MSL-1 of the primary device.

Q: What are the supply voltage limitations for substitute parts?

A: The primary device LMV321RIYLT operates across 2.7 V to 6 V. Most substitute parts operate across 2.7 V to 5.5 V, reducing the maximum supply voltage by 0.5 V. LMV321IDBVR extends minimum supply voltage to 2.1 V. LMV931Q1MF/NOPB extends minimum supply voltage to 1.8 V. Verify application supply voltage requirements against substitute specifications.

Q: Which substitute parts carry automotive qualification?

A: LMV931Q1MF/NOPB carries automotive grade designation and AEC-Q100 qualification, matching the primary device. All other substitute parts lack automotive qualification.

Q: What is the significance of MSL-3 moisture sensitivity for AZV321KTR-G1 and LMV321WG-7?

A: MSL-3 devices require storage at controlled humidity conditions (168-hour maximum exposure limit) compared to MSL-1 devices with unlimited shelf life. MSL-3 components require baking procedures before reflow soldering if storage time limits are exceeded.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the primary device regulatory classification.

Q: What is the difference between general-purpose and voltage-feedback amplifier classifications?

A: LMV321IDBVR is classified as voltage feedback amplifier, while the primary device and most substitutes are classified as general purpose. This classification reflects internal circuit topology and feedback configuration. Electrical performance parameters remain comparable within specified ranges.

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