LM258WYST Equivalent & Substitute Parts

Part Overview

The LM258WYST is a general-purpose operational amplifier manufactured by STMicroelectronics, featuring dual circuits in an 8-MiniSO surface-mount package. This device is classified as obsolete, indicating it is no longer in active production. The LM258WYST operates across a wide supply voltage range of 3V to 30V and is qualified to AEC-Q100 automotive standards, making it suitable for automotive and industrial applications requiring dual-channel amplification.

Due to its obsolete status, sourcing new units from the original manufacturer is not feasible for new production runs or long-term inventory planning. Equivalent and substitute parts provide functional alternatives that maintain compatibility with existing circuit designs while ensuring continued availability and supply chain reliability.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Slew Rate	0.6	V/µs
Gain Bandwidth Product	1.1	MHz
Current - Input Bias	20	nA
Voltage - Input Offset	5	mV
Current - Supply (x2 Channels)	700	µA
Current - Output / Channel	40	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	30	V
Operating Temperature	-40 to 105	°C
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	—
Mounting Type	Surface Mount	—
Grade	Automotive	—
Qualification	AEC-Q100	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the LM258WYST is determined by the following critical parameters:

Package Compatibility: All substitute parts must use surface-mount packages with 8-pin configurations (8-TSSOP, 8-MSOP, or 8-VSSOP) to ensure mechanical and electrical compatibility with existing PCB layouts.

Electrical Specifications: Substitute parts must support dual-circuit amplifier configurations with compatible supply voltage ranges. The minimum supply voltage must not exceed 3V, and the maximum supply voltage must be at least 30V to maintain full operational compatibility.

Functional Classification: General-purpose amplifier types are directly substitutable. Alternative amplifier types (CMOS, J-FET) are included as functional alternatives when they meet or exceed the electrical performance requirements of the original device.

Compliance and Certification: Parts with AEC-Q100 automotive qualification are prioritized for applications requiring automotive-grade reliability. RoHS3 compliance is mandatory for all substitutes to ensure regulatory alignment.

Product Status: Active-status parts are preferred for new designs and long-term availability. Parts with "Not For New Designs" status are included for reference but are not recommended for new production implementations.

Parameter Comparison

Parameter	LM258WYST	AD8662ARMZ-REEL	ADA4062-2ARMZ	BA3404FVM-TR	LM258DGKR	LM2904AQM8-13	LM2904DGKR	LM2904M8-13	LM2904VDMR2G	TL062IPWR
Manufacturer	STMicroelectronics	Analog Devices Inc.	Analog Devices Inc.	Rohm Semiconductor	Texas Instruments	Diodes Incorporated	Rohm Semiconductor	Diodes Incorporated	onsemi	Texas Instruments
Amplifier Type	General Purpose	CMOS	J-FET	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	J-FET
Number of Circuits	2	2	2	2	2	2	2	2	2	2
Slew Rate (V/µs)	0.6	3.5	3.3	1.2	0.3	0.3	0.3	0.3	—	3.5
Gain Bandwidth Product (MHz)	1.1	4	1.4	1.2	0.7	0.7	0.7	0.7	1	1
Current - Input Bias (nA)	20	0.0003	0.002	70	20	20	20	20	45	30
Voltage - Input Offset (mV)	5	0.05	0.75	2	3	2	3	2	7	3
Current - Supply (µA, x2 Channels)	700	1250	165	2000	500	700	1000	700	1500	200
Current - Output / Channel (mA)	40	140	20	30	40	40	40	40	40	20
Voltage - Supply Span Min (V)	3	5	8	4	3	2	3	3	3	10
Voltage - Supply Span Max (V)	30	16	36	36	32	36	26	36	32	30
Operating Temperature (°C)	-40 to 105	-40 to 125	-40 to 125	-40 to 85	-25 to 85	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 85
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm)	8-TSSOP, 8-MSOP (0.118", 3.00mm)	8-TSSOP, 8-MSOP (0.118", 3.00mm)	8-VSSOP, 8-MSOP (0.110", 2.80mm)	8-TSSOP, 8-MSOP (0.118", 3.00mm)	8-TSSOP, 8-MSOP (0.118", 3.00mm)	8-TSSOP, 8-MSOP (0.118", 3.00mm)	8-TSSOP, 8-MSOP (0.118", 3.00mm)	8-TSSOP, 8-MSOP (0.118", 3.00mm)	8-TSSOP (0.173", 4.40mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active	Active	Not For New Designs	Active	Active	Active
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	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes for Direct Replacement:

LM258DGKR (Texas Instruments) and LM2904M8-13 (Diodes Incorporated) are the most suitable direct replacements for the LM258WYST. Both devices maintain identical dual general-purpose amplifier configurations with compatible 8-pin surface-mount packages. LM258DGKR operates across the full 3V to 32V supply range and maintains the same input bias current specification of 20 nA. LM2904M8-13 extends the operating temperature range to -40°C to 125°C and supports supply voltages from 3V to 36V, providing enhanced thermal performance for extended operating conditions.

Automotive-Grade Alternatives:

LM2904AQM8-13 (Diodes Incorporated) is qualified to AEC-Q100 automotive standards, matching the automotive-grade classification of the LM258WYST. This device provides equivalent electrical performance with a wider supply voltage range (2V to 36V) and extended operating temperature range (-40°C to 125°C), making it suitable for automotive applications requiring long-term reliability and supply chain continuity.

High-Performance Alternatives:

AD8662ARMZ-REEL (Analog Devices Inc.) offers enhanced performance characteristics including a 4 MHz gain bandwidth product, 3.5 V/µs slew rate, and rail-to-rail output capability. This CMOS-based device is suitable for applications requiring faster signal processing and lower input offset voltage (50 µV). However, the minimum supply voltage requirement of 5V restricts its use in 3V supply applications.

ADA4062-2ARMZ (Analog Devices Inc.) provides J-FET input characteristics with extremely low input bias current (2 pA) and extended supply voltage range (8V to 36V). This device is appropriate for high-impedance signal conditioning applications where input bias current minimization is critical.

Low-Power Alternatives:

TL062IPWR (Texas Instruments) is a J-FET input amplifier with reduced supply current (200 µA for dual channels) and enhanced slew rate (3.5 V/µs). This device is suitable for battery-powered or low-power applications. The minimum supply voltage requirement of 10V restricts its use in lower voltage systems.

Compatibility Constraints:

BA3404FVM-TR (Rohm Semiconductor) features a push-pull output configuration and operates across a 4V to 36V supply range. The package dimensions (0.110", 2.80mm width) differ slightly from the standard 0.118" width, requiring PCB layout verification before implementation.

LM2904DGKR (Rohm Semiconductor) carries a "Not For New Designs" status and should not be selected for new production implementations, despite its wide availability and compatible electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can the LM258WYST be directly replaced with LM258DGKR without circuit modifications?

A: Yes. LM258DGKR is a direct functional equivalent with identical dual general-purpose amplifier architecture, 8-pin surface-mount package, and compatible electrical specifications. Both devices operate across overlapping supply voltage ranges (3V to 30V for LM258WYST; 3V to 32V for LM258DGKR) and maintain the same input bias current of 20 nA. No circuit modifications are required for pin-compatible substitution.

Q: What is the primary limitation of using AD8662ARMZ-REEL as a substitute?

A: The AD8662ARMZ-REEL requires a minimum supply voltage of 5V, whereas the LM258WYST operates from 3V. Applications using 3V or 4V supply rails cannot use this substitute without additional voltage regulation circuitry. The device is suitable only for systems with 5V or higher supply voltages.

Q: Are there supply chain advantages to selecting LM2904M8-13 over LM258DGKR?

A: LM2904M8-13 offers extended operating temperature range (-40°C to 125°C versus -25°C to 85°C for LM258DGKR) and wider maximum supply voltage specification (36V versus 32V). These specifications provide greater design margin and may improve long-term availability through broader application compatibility. Both devices maintain equivalent electrical performance for general-purpose amplification.

Q: Which substitute is recommended for automotive applications requiring AEC-Q100 qualification?

A: LM2904AQM8-13 (Diodes Incorporated) is the only substitute part listed with AEC-Q100 automotive qualification. This device matches the automotive-grade classification of the LM258WYST and is suitable for automotive applications requiring certified reliability standards. The device operates across 2V to 36V supply range and -40°C to 125°C temperature range.

Q: What is the significance of the "Not For New Designs" status on LM2904DGKR?

A: "Not For New Designs" indicates that the manufacturer recommends against using this part in new product development. While the device remains available and functionally compatible, it is intended for legacy system support and maintenance only. New designs should select from active-status alternatives such as LM2904M8-13 or LM258DGKR to ensure long-term manufacturer support and supply continuity.

Q: Can TL062IPWR be used in a 3V supply application?

A: No. TL062IPWR requires a minimum supply voltage of 10V and cannot operate in 3V supply systems. This device is suitable only for applications with 10V or higher supply voltages. For low-voltage applications, select LM258DGKR, LM2904M8-13, or LM2904AQM8-13, all of which operate from 3V minimum supply voltage.

Q: How do CMOS and J-FET amplifier types compare to the general-purpose design of the LM258WYST?

A: CMOS amplifiers (AD8662ARMZ-REEL) provide lower input offset voltage (50 µV versus 5 mV) and higher slew rate (3.5 V/µs versus 0.6 V/µs), suitable for precision signal conditioning. J-FET amplifiers (TL062IPWR, ADA4062-2ARMZ) provide extremely low input bias current (30 pA to 2 pA versus 20 nA), suitable for high-impedance applications. General-purpose designs (LM258DGKR, LM2904M8-13) provide balanced performance across all parameters without specialization. Selection depends on specific application requirements for input impedance, offset voltage, and slew rate performance.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this reference are RoHS3 compliant, matching the environmental compliance status of the LM258WYST. All devices are also REACH unaffected and carry EAR99 export classification.

Q: What package considerations apply when substituting BA3404FVM-TR?

A: BA3404FVM-TR uses an 8-VSSOP package with 0.110" width, compared to the standard 0.118" width of most other substitutes. While both are 8-pin surface-mount packages with 3.00mm pitch, the slightly narrower body width may affect PCB layout compatibility. Verify PCB footprint dimensions and solder pad spacing before implementing this substitute to ensure mechanical fit and electrical connectivity.

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