LM2904D Equivalent & Substitute Parts

Part Overview

The LM2904D is a general-purpose operational amplifier featuring two independent circuits in an 8-SOIC surface mount package, manufactured by Texas Instruments. This device is classified as obsolete, with 105,400 pieces currently in stock. The LM2904D operates across a wide supply voltage range of 3V to 26V and maintains functionality over the extended temperature range of -40°C to 125°C, making it suitable for industrial and automotive applications requiring robust performance across temperature extremes.

Due to its obsolete status, component sourcing for new designs presents supply chain risk. Identifying equivalent and substitute parts ensures design continuity, maintains performance specifications, and provides access to actively manufactured alternatives with improved availability and extended product lifecycles.

Key Parameters

Parameter	LM2904D Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Slew Rate	0.3	V/µs
Gain Bandwidth Product	700	kHz
Current - Input Bias	20	nA
Voltage - Input Offset	3	mV
Current - Supply	500	µA (x2 Channels)
Current - Output / Channel	40	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	26	V
Operating Temperature	-40 to 125	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the LM2904D is determined by strict alignment of electrical and mechanical parameters. The following criteria establish valid substitution relationships:

Primary Substitution Criteria:

Number of circuits: Must equal 2
Package type: Must be 8-SOIC with 0.154" (3.90mm) width for direct pin compatibility
Mounting type: Surface mount only
Supply voltage range: Minimum 3V; maximum must accommodate 26V operation
Output current per channel: Minimum 40 mA
Input bias current: Maximum 20 nA
Input offset voltage: Maximum 3 mV
Operating temperature range: Must include -40°C to 125°C or be compatible with application requirements
RoHS3 compliance: Required for regulatory alignment

Secondary Compatibility Factors:

Slew rate and gain bandwidth product determine signal fidelity in AC applications
Supply current consumption affects power budget calculations
Product status (Active vs. Obsolete/Not For New Designs) indicates long-term availability

Substitutes are grouped into three categories: (1) Texas Instruments active alternatives with enhanced specifications, (2) Rohm Semiconductor equivalents with comparable performance, (3) Diodes Incorporated and STMicroelectronics variants with extended temperature or automotive qualification.

Parameter Comparison

Part Number	Manufacturer	Product Status	Slew Rate (V/µs)	GBW (kHz)	Input Bias (nA)	Input Offset (mV)	Supply Current (µA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package
LM2904D	Texas Instruments	Obsolete	0.3	700	20	3	500	40	3	26	-40 to 125	8-SOIC
LM2904M/NOPB	Texas Instruments	Active	—	1000	45	2	1000	40	3	32	-40 to 85	8-SOIC
LM2904MX/NOPB	Texas Instruments	Active	—	1000	45	2	1000	40	3	32	-40 to 85	8-SOIC
LM358AM/NOPB	Texas Instruments	Active	—	1000	45	2	1000	40	3	32	0 to 70	8-SOIC
LM358AMX/NOPB	Texas Instruments	Active	—	1000	45	2	1000	40	3	32	0 to 70	8-SOIC
LM2904DR	Rohm Semiconductor	Not For New Designs	0.3	700	20	3	1000	40	3	26	-40 to 125	8-SOIC
BA10358F-E1	Rohm Semiconductor	Active	0.2	500	45	2	700	20	3	32	-40 to 85	8-SOP
BA10358F-E2	Rohm Semiconductor	Active	0.2	500	45	2	700	20	3	32	-40 to 85	8-SOP
BA2904SF-E2	Rohm Semiconductor	Active	0.2	500	20	2	500	30	3	32	-40 to 105	8-SOP
LM2904AS-13	Diodes Incorporated	Active	0.3	700	20	1	700	40	3	36	-40 to 125	8-SOIC
LM2904AYDT	STMicroelectronics	Active	0.6	1100	20	1	700	40	3	30	-40 to 125	8-SOIC

Engineering Selection Recommendations

Tier 1: Direct Electrical & Mechanical Equivalents (Recommended for Obsolete Part Replacement)

LM2904AS-13 (Diodes Incorporated) and LM2904AYDT (STMicroelectronics) provide the closest functional equivalence to LM2904D. Both maintain the 8-SOIC package format, support the full -40°C to 125°C temperature range, deliver 40 mA output current per channel, and achieve 700 kHz gain bandwidth product. LM2904AS-13 extends maximum supply voltage to 36V, exceeding the original 26V specification. LM2904AYDT offers enhanced slew rate (0.6V/µs vs. 0.3V/µs) and includes automotive-grade AEC-Q100 qualification. Both are actively manufactured and RoHS3 compliant.

Tier 2: Texas Instruments Active Alternatives (Enhanced Performance)

LM2904M/NOPB and LM2904MX/NOPB represent the manufacturer's current production line. These devices increase gain bandwidth product to 1 MHz and extend maximum supply voltage to 32V. Operating temperature range reduces to -40°C to 85°C, which is acceptable for most industrial applications but excludes the upper 40°C of the original specification. Supply current increases to 1 mA per channel. Both are available in high volume and offer superior long-term availability.

Tier 3: Rohm Semiconductor Alternatives (Conditional Compatibility)

LM2904DR (Rohm) maintains electrical specifications identical to LM2904D but carries "Not For New Designs" status, limiting its suitability for new projects despite current inventory. BA10358F-E1 and BA10358F-E2 (Rohm) use 8-SOP package (0.173", 4.40mm width), which differs from the original 8-SOIC footprint and requires PCB layout verification. Output current reduces to 20 mA per channel, which may be insufficient for applications requiring 40 mA. BA2904SF-E2 similarly uses 8-SOP packaging and delivers only 30 mA output current.

Tier 4: Temperature-Limited Alternatives (Restricted Application)

LM358AM/NOPB and LM358AMX/NOPB operate only to 70°C maximum, eliminating them from applications requiring the full -40°C to 125°C range. These are suitable only for commercial-grade designs with narrower temperature requirements.

Compliance & Regulatory Alignment:

All recommended substitutes maintain RoHS3 compliance and REACH unaffected status, matching the original part's regulatory posture. LM2904AYDT includes AEC-Q100 automotive qualification, providing additional assurance for automotive and harsh-environment applications.

Frequently Asked Questions (FAQ)

Q1: Can LM2904M/NOPB directly replace LM2904D in existing designs?

LM2904M/NOPB is electrically compatible for most applications. Pin configuration and package footprint (8-SOIC) are identical. However, the maximum operating temperature reduces from 125°C to 85°C. If your application operates above 85°C, this substitute is not suitable. Supply current increases from 500 µA to 1 mA per channel, which may affect power budget calculations in battery-powered designs. Verify that your circuit does not depend on the original 0.3V/µs slew rate specification, as the substitute's slew rate is not specified.

Q2: Why do BA10358F-E1 and BA10358F-E2 show different package dimensions despite both being labeled 8-SOP?

BA10358F-E1 and BA10358F-E2 use 8-SOP packaging with 0.173" (4.40mm) width, compared to the original LM2904D's 8-SOIC with 0.154" (3.90mm) width. This dimensional difference affects PCB footprint compatibility. Direct substitution requires PCB layout modification. Additionally, output current capability reduces to 20 mA per channel, which may be insufficient for applications requiring the original 40 mA specification.

Q3: Is LM2904AS-13 suitable for applications requiring extended temperature operation?

Yes. LM2904AS-13 maintains the full -40°C to 125°C operating range and uses the identical 8-SOIC package. It exceeds the original supply voltage specification (36V maximum vs. 26V), providing additional design margin. Input offset voltage improves to 1 mV. Moisture sensitivity level is MSL 3 (168 hours), compared to MSL 1 for the original part, which may affect storage and handling procedures in high-humidity environments.

Q4: What is the advantage of LM2904AYDT over other substitutes?

LM2904AYDT combines full temperature range operation (-40°C to 125°C), identical 8-SOIC packaging, and enhanced performance specifications including 0.6V/µs slew rate and 1.1 MHz gain bandwidth product. It includes AEC-Q100 automotive qualification, making it suitable for automotive and industrial applications requiring certified component traceability. Supply voltage range extends to 30V, and input offset voltage improves to 1 mV.

Q5: Can I use LM358AM/NOPB as a substitute?

LM358AM/NOPB is not recommended for applications requiring the full -40°C to 125°C temperature range, as it operates only to 70°C maximum. It is suitable only for commercial-grade designs with narrower temperature requirements (0°C to 70°C). Pin configuration and 8-SOIC package are compatible. Electrical specifications (1 MHz gain bandwidth product, 40 mA output current) exceed the original part's capabilities.

Q6: How does supply current affect circuit design when substituting LM2904D?

Original LM2904D draws 500 µA per channel (1 mA total for two channels). Most active substitutes increase this to 700 µA or 1 mA per channel. In battery-powered or low-power applications, this increase directly reduces battery life or increases power supply requirements. Calculate total system current consumption including all other components. For applications with strict power budgets, verify that the substitute's increased supply current is acceptable before implementation.

Q7: Are all substitutes RoHS3 compliant?

Yes. All recommended substitutes listed in this document maintain RoHS3 compliance and REACH unaffected status, matching the original LM2904D's regulatory alignment. This ensures compatibility with procurement requirements and environmental regulations across global markets.

Q8: What packaging options are available for LM2904D substitutes?

Most active substitutes are available in 8-SOIC (0.154", 3.90mm width) packaging, which is directly compatible with original LM2904D PCB layouts. Rohm Semiconductor alternatives (BA10358F-E1, BA10358F-E2, BA2904SF-E2) use 8-SOP packaging (0.173", 4.40mm width), requiring PCB footprint verification and potential layout modification. Verify packaging compatibility before design implementation.

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