LM258DMR2 Equivalent & Substitute Parts

Part Overview

The LM258DMR2 is a general-purpose operational amplifier featuring two circuits in an 8-MSOP surface mount package. This device is classified as obsolete, with 3,800 units currently in stock. The LM258DMR2 operates across a supply voltage range of 3V to 32V and is suitable for applications requiring dual-channel amplification with moderate bandwidth requirements.

Due to its obsolete status, identifying equivalent and substitute parts is necessary for design continuity, long-term availability assurance, and compliance with current manufacturing standards. Active alternatives provide enhanced specifications, improved compliance certifications, and greater inventory availability.

Key Parameters

Parameter	LM258DMR2 Value
Amplifier Type	General Purpose
Number of Circuits	2
Gain Bandwidth Product	1 MHz
Current - Input Bias	45 nA
Voltage - Input Offset	2 mV
Current - Supply	800µA (x2 Channels)
Current - Output / Channel	40 mA
Voltage - Supply Span (Min)	3 V
Voltage - Supply Span (Max)	32 V
Operating Temperature	-25°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the LM258DMR2 is determined by the following critical parameters:

Primary Substitution Criteria:

Number of circuits: 2 (dual-channel requirement)
Amplifier type: General Purpose (functional equivalence)
Package type: 8-MSOP surface mount (mechanical compatibility)
Supply voltage range: Minimum 3V, Maximum ≥32V (operational compatibility)
Current output per channel: ≥40 mA (load-driving capability)
Operating temperature range: Must encompass -25°C to 85°C

Substitution Categories:

Direct Equivalents maintain identical electrical specifications and packaging while offering improved product status and compliance. The LM258DMR2G (onsemi) is a direct equivalent available in active status with RoHS3 compliance.

Compatible Substitutes meet all critical electrical and mechanical parameters but may exhibit variations in secondary specifications such as slew rate, gain bandwidth product, or input bias current. These include the LM258DGKR (Texas Instruments) and LM258ADGKR (Texas Instruments), which maintain functional compatibility within the LM258 base product family.

Alternative Substitutes provide equivalent functionality through different amplifier architectures or enhanced performance characteristics. These include J-FET based designs (ADA4062-2ARMZ series) and enhanced general-purpose designs (AS358MMTR-G1, BA3404FVM-TR, BA3472 series) that meet or exceed the core electrical requirements.

Parameter Comparison

Parameter	LM258DMR2	LM258DMR2G	LM258DGKR	LM258ADGKR	ADA4062-2ARMZ-R7	AS358MMTR-G1	BA3404FVM-TR	BA3472RFVM-TR
Manufacturer	onsemi	onsemi	Texas Instruments	Texas Instruments	Analog Devices Inc.	Diodes Incorporated	Rohm Semiconductor	Rohm Semiconductor
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	J-FET	General Purpose	General Purpose	General Purpose
Number of Circuits	2	2	2	2	2	2	2	2
Gain Bandwidth Product	1 MHz	1 MHz	700 kHz	700 kHz	1.4 MHz	Not specified	1.2 MHz	4 MHz
Current - Input Bias	45 nA	45 nA	20 nA	15 nA	2 pA	20 nA	70 nA	100 nA
Voltage - Input Offset	2 mV	2 mV	3 mV	2 mV	750 µV	2 mV	2 mV	1.5 mV
Current - Supply	800µA (x2)	800µA (x2)	500µA (x2)	500µA (x2)	165µA (x2)	700µA (x2)	2mA	4mA
Current - Output / Channel	40 mA	40 mA	40 mA	40 mA	20 mA	40 mA	30 mA	30 mA
Voltage - Supply Span (Min)	3 V	3 V	3 V	3 V	8 V	3 V	4 V	3 V
Voltage - Supply Span (Max)	32 V	32 V	32 V	32 V	36 V	36 V	36 V	36 V
Operating Temperature	-25°C ~ 85°C	-25°C ~ 85°C	-25°C ~ 85°C	-25°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 105°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	8-MSOP	8-MSOP	8-VSSOP	8-VSSOP	8-MSOP	8-MSOP	8-MSOP	8-MSOP
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

The LM258DMR2G (onsemi) is the primary direct equivalent. This part maintains all electrical specifications of the LM258DMR2 while offering active product status and RoHS3 compliance. The LM258DMR2G is available in Tape & Reel packaging with 5,400 units in stock, providing superior availability compared to the obsolete original part.

For LM258 Family Compatibility:

The LM258DGKR (Texas Instruments) and LM258ADGKR (Texas Instruments) are active LM258 base product variants. Both maintain the core dual-channel general-purpose amplifier architecture with identical supply voltage ranges and output current specifications. The LM258ADGKR offers the highest inventory availability at 55,100 units. These parts are suitable for applications where the LM258 family specification is required and minor variations in slew rate (0.3V/µs) and gain bandwidth product (700 kHz) are acceptable.

For Enhanced Performance Requirements:

The BA3472RFVM-TR (Rohm Semiconductor) provides significantly enhanced performance with 4 MHz gain bandwidth product and 10V/µs slew rate while maintaining compatibility with the core electrical requirements. This part is suitable for applications requiring faster signal processing. The BA3472YFVM-CTR variant includes automotive qualification (AEC-Q100) for applications requiring automotive-grade components.

For Ultra-Low Input Bias Current Applications:

The ADA4062-2ARMZ-R7 (Analog Devices Inc.) employs J-FET input architecture, delivering 2 pA input bias current compared to 45 nA in the original part. This substitution is appropriate for high-impedance signal conditioning applications. Note that this part requires a minimum supply voltage of 8V, which may restrict use in 3V to 8V supply applications.

For General-Purpose Alternatives:

The AS358MMTR-G1 (Diodes Incorporated) provides general-purpose dual-channel amplification with specifications closely aligned to the LM258DMR2. This part is available in active status with 3,300 units in stock and supports supply voltages up to 36V.

All recommended substitutes are RoHS3 compliant and available in active product status, ensuring long-term supply chain viability and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can the LM258DMR2G be used as a direct replacement for the LM258DMR2?

A: Yes. The LM258DMR2G maintains identical electrical specifications including gain bandwidth product (1 MHz), input bias current (45 nA), input offset voltage (2 mV), supply current (800µA per channel), and output current (40 mA per channel). Both parts operate across 3V to 32V supply range and -25°C to 85°C temperature range. The primary difference is product status (active versus obsolete) and RoHS compliance (ROHS3 versus non-compliant).

Q: What is the difference between the 8-MSOP and 8-VSSOP packages?

A: Both packages are surface mount 8-pin configurations with identical pin counts and functional compatibility. The 8-MSOP package has a width of 0.118" (3.00mm), while the 8-VSSOP package has a width of 0.110" (2.80mm). The LM258DGKR and LM258ADGKR use the 8-VSSOP package variant. PCB layout modifications may be required when switching between these package types due to dimensional differences.

Q: Can I use the ADA4062-2ARMZ-R7 in a 3V to 8V supply application?

A: No. The ADA4062-2ARMZ-R7 requires a minimum supply voltage of 8V, whereas the LM258DMR2 operates from 3V. Applications requiring operation below 8V supply voltage must use alternatives such as the LM258DMR2G, LM258DGKR, LM258ADGKR, AS358MMTR-G1, or BA3404FVM-TR.

Q: Which substitute part offers the lowest input bias current?

A: The ADA4062-2ARMZ-R7 offers the lowest input bias current at 2 pA, achieved through J-FET input architecture. This represents a 22,500-fold reduction compared to the LM258DMR2 (45 nA). This characteristic is beneficial for high-impedance signal conditioning and precision measurement applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All recommended substitute parts carry RoHS3 compliance certification. The original LM258DMR2 is RoHS non-compliant. For applications subject to RoHS regulatory requirements, substitution to any of the recommended active parts is necessary.

Q: What is the inventory status of each substitute part?

A: Current inventory levels are as follows: LM258DMR2G (5,400 units), LM258DGKR (25,300 units), LM258ADGKR (55,100 units), ADA4062-2ARMZ-R7 (2,686 units), AS358MMTR-G1 (3,300 units), BA3404FVM-TR (2,300 units), and BA3472RFVM-TR (4,097 units). The LM258ADGKR provides the highest availability.

Q: Can I substitute the LM258DMR2 with the BA3472RFVM-TR for improved performance?

A: Yes, with design verification. The BA3472RFVM-TR provides enhanced specifications including 4 MHz gain bandwidth product (versus 1 MHz), 10V/µs slew rate (versus unspecified), and 1.5 mV input offset voltage (versus 2 mV). However, output current per channel is reduced to 30 mA (versus 40 mA), and supply current is increased to 4mA (versus 800µA per channel). Applications requiring the full 40 mA output current must verify that 30 mA is sufficient.

Q: What is the temperature range coverage of each substitute?

A: The LM258DMR2 operates -25°C to 85°C. Substitutes with identical range: LM258DMR2G, LM258DGKR, LM258ADGKR. Extended range options: ADA4062-2ARMZ-R7 (-40°C to 125°C), AS358MMTR-G1 (-40°C to 85°C), BA3404FVM-TR (-40°C to 85°C), BA3472RFVM-TR (-40°C to 105°C). Applications requiring operation below -25°C or above 85°C must select parts with extended temperature ratings.

Q: Is the LM258ADGKR suitable for all applications where the LM258DMR2 is used?

A: The LM258ADGKR is suitable for most applications. It maintains identical supply voltage range (3V to 32V), output current (40 mA per channel), and operating temperature range (-25°C to 85°C). The slew rate is 0.3V/µs and gain bandwidth product is 700 kHz, both lower than the original part's 1 MHz bandwidth. Applications with strict bandwidth or slew rate requirements must verify compatibility before substitution.

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