LMV324MX Equivalent & Substitute Parts

Part Overview

The LMV324MX is a general-purpose operational amplifier featuring four independent circuits in a 14-SOIC surface-mount package. This device provides rail-to-rail output capability with a supply voltage range of 2.7 V to 5.5 V and operates across an extended temperature range of -40°C to 125°C. The LMV324MX is classified as "Not For New Designs" by Texas Instruments, indicating that alternative solutions should be evaluated for new applications. Identifying equivalent and substitute parts is necessary to ensure design continuity, improve component availability, and access devices with enhanced performance characteristics or updated compliance certifications.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Slew Rate	1	V/µs
Gain Bandwidth Product	1	MHz
Current - Input Bias	15	nA
Voltage - Input Offset	1.7	mV
Current - Supply (x4 Channels)	410	µA
Current - Output / Channel	160	mA
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 125	°C
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	RoHS non-compliant	—

Substitute Part Grouping Explanation

Substitute parts for the LMV324MX are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Electrical Compatibility:

Four independent operational amplifier circuits
Rail-to-rail output configuration
Supply voltage range encompassing 2.7 V to 5.5 V minimum and maximum
Operating temperature range of -40°C to 125°C
Surface-mount packaging in 14-pin SOIC or equivalent footprint

Mechanical Compatibility:

14-pin SOIC package with 0.154" (3.90mm) width or 14-pin SOP variants with compatible pinout

Substitutes are grouped into two categories:

Category 1: Direct Equivalents (LMV324 Base Product Family) Parts sharing the identical LMV324 base product number with matching electrical specifications and packaging. These include LMV324MX/NOPB and LMV324AM14X, which maintain full pin-for-pin compatibility and identical performance characteristics.

Category 2: Functional Alternatives (Enhanced or Comparable Performance) Parts from alternative manufacturers (Analog Devices, Renesas, Rohm Semiconductor, Diodes Incorporated, onsemi) that meet or exceed the core electrical requirements while offering improved performance metrics, enhanced compliance certifications, or superior availability. These devices maintain the four-circuit configuration, rail-to-rail output, and compatible package footprint but may exhibit different slew rates, gain-bandwidth products, or supply current characteristics.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Circuits	Output Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (nA)	Input Offset (mV)	Supply Current (µA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package	Status	RoHS
LMV324MX	Texas Instruments	General Purpose	4	Rail-to-Rail	1	1	15	1.7	410	160	2.7	5.5	-40 to 125	14-SOIC	Not For New Designs	Non-compliant
LMV324MX/NOPB	Texas Instruments	General Purpose	4	Rail-to-Rail	1	1	15	1.7	410	160	2.7	5.5	-40 to 125	14-SOIC	Active	ROHS3 Compliant
ADA4891-4ARZ	Analog Devices Inc.	CMOS	4	Rail-to-Rail	210	105	0.002	2.5	4400	125	2.7	5.5	-40 to 125	14-SOIC	Active	ROHS3 Compliant
ADA4891-4ARZ-R7	Analog Devices Inc.	CMOS	4	Rail-to-Rail	210	105	0.002	2.5	4400	125	2.7	5.5	-40 to 125	14-SOIC	Active	ROHS3 Compliant
ADA4891-4ARZ-RL	Analog Devices Inc.	CMOS	4	Rail-to-Rail	210	105	0.002	2.5	4400	125	2.7	5.5	-40 to 125	14-SOIC	Active	ROHS3 Compliant
BU7487F-E2	Rohm Semiconductor	CMOS	4	Rail-to-Rail	10	10	0.001	1	6000	12	3	5.5	-40 to 105	14-SOP	Active	ROHS3 Compliant
ISL28413FBZ	Renesas Electronics Corporation	General Purpose	4	Rail-to-Rail	1	2	0.003	0.5	90	22	1.8	5.5	-40 to 125	14-SOIC	Active	ROHS3 Compliant
ISL28414FBZ-T13	Renesas Electronics Corporation	General Purpose	4	Rail-to-Rail	2.5	5	0.003	0.5	300	31	1.8	5.5	-40 to 125	14-SOIC	Active	ROHS3 Compliant
LMR934F-GE2	Rohm Semiconductor	General Purpose	4	Rail-to-Rail	0.35	1.4	5	1	250	90	1.8	5	-40 to 85	14-SOP	Active	ROHS3 Compliant
LMV324AM14X	onsemi	General Purpose	4	Rail-to-Rail	1.5	1.4	1	1	100	34	2.7	5.5	-40 to 125	14-SOIC	Obsolete	ROHS3 Compliant
LMV324BG-13	Diodes Incorporated	General Purpose	4	Rail-to-Rail	1	1	15	1.7	340	90	2.7	5.5	-40 to 125	14-SOIC	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement with Enhanced Compliance:

LMV324MX/NOPB is the primary direct substitute. This part maintains identical electrical specifications and packaging while offering Active product status and ROHS3 compliance, addressing the obsolescence and regulatory concerns of the original LMV324MX. The NOPB designation indicates lead-free manufacturing, suitable for applications requiring RoHS compliance.

For Applications Requiring Extended Low-Voltage Operation:

ISL28413FBZ and ISL28414FBZ-T13 from Renesas Electronics Corporation support minimum supply voltages of 1.8 V, compared to 2.7 V for the LMV324MX. These devices maintain the four-circuit configuration and rail-to-rail output while offering improved input offset voltage (0.5 mV) and lower input bias current (3 pA). Both devices are Active and ROHS3 compliant. ISL28414FBZ-T13 provides enhanced slew rate (2.5 V/µs) and gain-bandwidth product (5 MHz) for applications requiring faster signal processing.

For High-Performance Applications:

ADA4891-4ARZ, ADA4891-4ARZ-R7, and ADA4891-4ARZ-RL from Analog Devices Inc. deliver significantly enhanced performance with slew rate of 210 V/µs and gain-bandwidth product of 105 MHz. These CMOS devices feature extremely low input bias current (2 pA) and maintain the 2.7 V to 5.5 V supply range and -40°C to 125°C operating temperature. All three variants are Active and ROHS3 compliant, differing only in packaging format (Tube, Cut Tape & Digi-Reel, and Tape & Reel respectively).

For Low-Power Applications:

LMR934F-GE2 from Rohm Semiconductor offers reduced supply current (250 µA) compared to the LMV324MX (410 µA), making it suitable for battery-powered or energy-constrained designs. This device operates across 1.8 V to 5 V supply range and maintains the four-circuit configuration. Note that the maximum operating temperature is limited to 85°C, which may restrict use in extended-temperature applications.

For Package Compatibility Considerations:

BU7487F-E2 from Rohm Semiconductor uses a 14-SOP package (0.173", 4.40mm width) rather than the standard 14-SOIC (0.154", 3.90mm width). While electrically compatible, PCB layout modifications may be required. This device is Active and ROHS3 compliant but exhibits lower output current per channel (12 mA) and reduced maximum operating temperature (105°C).

Devices to Avoid for New Designs:

LMV324AM14X from onsemi is classified as Obsolete and should not be selected for new applications despite ROHS3 compliance and Active inventory status.

Frequently Asked Questions (FAQ)

Q: Can LMV324MX/NOPB be used as a direct replacement for LMV324MX?

A: Yes. LMV324MX/NOPB is a direct equivalent with identical electrical specifications, pin configuration, and package dimensions. The primary differences are Active product status (versus "Not For New Designs"), ROHS3 compliance (versus non-compliant), and lead-free manufacturing. No circuit modifications are required.

Q: What is the key difference between the ADA4891-4ARZ variants (ARZ, ARZ-R7, ARZ-RL)?

A: All three variants share identical electrical specifications. The differences are packaging formats: ARZ is supplied in Tube, ARZ-R7 in Cut Tape & Digi-Reel, and ARZ-RL in Tape & Reel. Selection depends on procurement and assembly requirements rather than electrical performance.

Q: Can ISL28413FBZ operate at 2.7 V supply voltage like the LMV324MX?

A: Yes. ISL28413FBZ supports a minimum supply voltage of 1.8 V, which encompasses the 2.7 V minimum of the LMV324MX. The device is fully compatible with 2.7 V to 5.5 V supply range applications.

Q: Why does BU7487F-E2 have lower output current per channel (12 mA) compared to LMV324MX (160 mA)?

A: BU7487F-E2 is optimized for low-power applications and features different internal architecture. Applications requiring high output current (>12 mA per channel) should not use this substitute.

Q: Is LMV324AM14X suitable for new designs?

A: No. LMV324AM14X is classified as Obsolete. For new applications, select LMV324MX/NOPB or alternative active devices such as ISL28413FBZ, ISL28414FBZ-T13, or ADA4891-4ARZ variants.

Q: What is the maximum operating temperature for LMR934F-GE2?

A: LMR934F-GE2 operates to a maximum of 85°C, compared to 125°C for the LMV324MX. Applications requiring operation above 85°C must use alternative substitutes such as LMV324MX/NOPB, ISL28413FBZ, ISL28414FBZ-T13, or ADA4891 variants.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed are ROHS3 compliant except the original LMV324MX, which is RoHS non-compliant. LMV324MX/NOPB provides ROHS3 compliance as a direct equivalent.

Q: Can ADA4891-4ARZ be used in applications designed for LMV324MX without circuit modifications?

A: Pin configuration and package footprint are compatible, enabling direct physical substitution. However, the significantly enhanced performance characteristics (210 V/µs slew rate versus 1 V/µs, 105 MHz gain-bandwidth product versus 1 MHz) may affect circuit behavior. Circuit analysis and testing are necessary to confirm functional equivalence in the specific application context.

Q: What is the moisture sensitivity level (MSL) for all substitute parts?

A: LMV324MX/NOPB, ADA4891 variants, BU7487F-E2, LMR934F-GE2, and LMV324AM14X have MSL 1 (Unlimited). ISL28413FBZ and ISL28414FBZ-T13 have MSL 2 (1 Year). LMV324BG-13 has MSL 3 (168 Hours). MSL ratings affect storage and handling requirements prior to assembly.

Q: Which substitute offers the lowest input offset voltage?

A: ISL28413FBZ and ISL28414FBZ-T13 both feature 0.5 mV input offset voltage, compared to 1.7 mV for LMV324MX. ADA4891 variants offer 2.5 mV. BU7487F-E2 offers 1 mV. LMR934F-GE2 offers 1 mV.

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