LM324DRG3 Equivalent & Substitute Parts

Part Overview

The LM324DRG3 is a general-purpose operational amplifier integrated circuit manufactured by Texas Instruments, configured as a 4-circuit device in 14-SOIC surface mount packaging. This component operates across a supply voltage range of 3V to 30V with an operating temperature range of 0°C to 70°C. The device is classified as Last Time Buy, indicating discontinued production status. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and accommodate alternative sourcing requirements for applications requiring general-purpose amplification functionality.

Key Parameters

Parameter	LM324DRG3 Value
Manufacturer	Texas Instruments
Amplifier Type	General Purpose
Number of Circuits	4
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Slew Rate	0.5V/µs
Gain Bandwidth Product	1.2 MHz
Current - Input Bias	20 nA
Voltage - Input Offset	3 mV
Current - Supply	1.4 mA (x4 Channels)
Current - Output / Channel	30 mA
Voltage - Supply Span (Min)	3 V
Voltage - Supply Span (Max)	30 V
Operating Temperature	0°C ~ 70°C (TA)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Last Time Buy

Substitute Part Grouping Explanation

Substitution eligibility for the LM324DRG3 is determined by the following critical parameters:

Primary Compatibility Criteria:

Amplifier Type: General Purpose (4-circuit configuration)
Package / Case: 14-SOIC form factor with 0.154" (3.90mm) width
Mounting Type: Surface Mount
Number of Circuits: 4 channels per device
Voltage - Supply Span: Minimum 3V, Maximum ≥30V
Operating Temperature Range: Must encompass or exceed 0°C to 70°C

Secondary Performance Parameters:

Gain Bandwidth Product: 1.2 MHz or higher
Slew Rate: 0.5V/µs or higher
Current - Input Bias: 20 nA or lower
Voltage - Input Offset: 3 mV or lower
Current - Output / Channel: 30 mA or higher

Substitute parts must maintain electrical compatibility within the 14-SOIC package footprint and support the full supply voltage range. Parts with extended temperature ratings or improved performance specifications are acceptable substitutes. Compliance certifications (RoHS3, REACH) must be maintained for regulated applications.

Parameter Comparison

Part Number	Manufacturer	Package	Slew Rate (V/µs)	GBW (MHz)	Input Bias (nA)	Input Offset (mV)	Supply Current (mA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Status
LM324DRG3	Texas Instruments	14-SOIC	0.5	1.2	20	3	1.4	30	3	30	0 ~ 70	Last Time Buy
LM324DR	Rohm Semiconductor	14-SOIC	0.3	1.2	20	1	1	30	3	32	-40 ~ 85	Obsolete
LM324AM/NOPB	Texas Instruments	14-SOIC	—	1	45	2	1.5	40	3	32	0 ~ 70	Active
LM324AMX/NOPB	Texas Instruments	14-SOIC	—	1	45	2	1.5	40	3	32	0 ~ 70	Active
LM324M/NOPB	Texas Instruments	14-SOIC	—	1	45	2	1.5	40	3	32	0 ~ 70	Active
LM324MX/NOPB	Texas Instruments	14-SOIC	—	1	45	2	1.5	40	3	32	0 ~ 70	Active
LM324EDR2G	onsemi	14-SOIC	—	—	90	2	—	40	3	32	0 ~ 70	Active
BA2902SF-E2	Rohm Semiconductor	14-SOP	0.2	0.5	20	2	0.7	30	3	32	-40 ~ 105	Active
LM224D	STMicroelectronics	14-SOIC	0.4	1.2	20	2	1.5	40	3	30	-40 ~ 105	Active
LM2902D	onsemi	14-SOIC	0.5	1.2	20	3	1.4	30	3	26	-40 ~ 125	Obsolete
LM2902DT	Rohm Semiconductor	14-SOIC	0.3	0.8	20	1	1	30	3	32	-40 ~ 125	Not For New Designs

Engineering Selection Recommendations

Active Production Alternatives (Recommended for New Designs):

The LM324AMX/NOPB, LM324AM/NOPB, and LM324MX/NOPB from Texas Instruments are direct functional equivalents with Active product status. These parts maintain the same 14-SOIC package, 4-circuit configuration, and supply voltage range (3V to 32V). All three are RoHS3 compliant and carry MSL Level 1 rating. The primary difference is packaging format: AM/NOPB uses Tube packaging, while AMX/NOPB uses Cut Tape & Digi-Reel format. These parts feature improved input offset voltage (2 mV versus 3 mV) and higher output current capability (40 mA versus 30 mA per channel), making them superior substitutes for the LM324DRG3.

The LM324EDR2G from onsemi is an Active alternative in 14-SOIC packaging with extended supply voltage range (3V to 32V) and improved output current (40 mA). This part is suitable for applications requiring onsemi sourcing or supply chain diversification.

Extended Temperature Range Alternatives:

The LM224D from STMicroelectronics provides an extended operating temperature range (-40°C to 105°C) while maintaining 14-SOIC packaging and 1.2 MHz gain bandwidth product. This part is suitable for applications requiring wider temperature operation beyond the standard 0°C to 70°C range.

Obsolete Parts (Not Recommended for New Designs):

The LM324DR (Rohm Semiconductor) and LM2902D (onsemi) are classified as Obsolete. The LM2902DT is marked Not For New Designs. These parts should not be selected for new circuit designs due to discontinued production status.

Package Compatibility Note:

The BA2902SF-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). This package difference may require PCB layout modifications and is not recommended as a direct substitute without design verification.

Frequently Asked Questions (FAQ)

Q: Can I use LM324AMX/NOPB as a direct replacement for LM324DRG3?

A: Yes. Both parts are 4-circuit general-purpose operational amplifiers in 14-SOIC packaging with compatible supply voltage ranges (3V to 32V for LM324AMX/NOPB covers the 3V to 30V requirement of LM324DRG3). The LM324AMX/NOPB has Active product status and improved specifications (2 mV input offset versus 3 mV, 40 mA output current versus 30 mA). The primary difference is packaging format: LM324AMX/NOPB uses Cut Tape & Digi-Reel, while LM324DRG3 uses Tape & Reel.

Q: What is the difference between LM324AM/NOPB, LM324M/NOPB, and LM324MX/NOPB?

A: All three parts are functionally identical 4-circuit general-purpose operational amplifiers from Texas Instruments with identical electrical specifications. The differences are packaging formats: LM324AM/NOPB and LM324M/NOPB use Tube packaging, while LM324MX/NOPB uses Cut Tape & Digi-Reel format. Selection depends on your procurement and assembly requirements.

Q: Why is the LM324DR listed as Obsolete?

A: The LM324DR from Rohm Semiconductor has been discontinued and is no longer in active production. While it meets the electrical requirements for substitution, new designs should not rely on this part due to limited future availability.

Q: Can I use BA2902SF-E2 as a substitute?

A: The BA2902SF-E2 is functionally compatible as a 4-circuit general-purpose operational amplifier, but uses a different package format (14-SOP with 4.40mm width versus 14-SOIC with 3.90mm width). This package difference requires PCB layout verification and is not recommended as a direct pin-compatible substitute without design review.

Q: What is the significance of the LinCMOS™ series designation?

A: The LinCMOS™ series designation on LM324AM/NOPB, LM324M/NOPB, and LM324MX/NOPB indicates Texas Instruments' CMOS technology implementation. These parts maintain functional compatibility with the LM324DRG3 while offering improved power efficiency characteristics.

Q: Are all substitute parts RoHS3 compliant?

A: All recommended Active substitute parts (LM324AMX/NOPB, LM324AM/NOPB, LM324M/NOPB, LM324MX/NOPB, LM324EDR2G, and LM224D) are RoHS3 compliant. The obsolete parts LM324DR and LM2902DT are also RoHS3 compliant. The LM2902D is RoHS non-compliant and should not be used in regulated applications.

Q: Which substitute offers the best performance improvement?

A: The LM324AMX/NOPB, LM324AM/NOPB, and LM324M/NOPB offer improved input offset voltage (2 mV versus 3 mV) and higher output current per channel (40 mA versus 30 mA). The LM224D provides extended temperature range (-40°C to 105°C) while maintaining equivalent gain bandwidth product (1.2 MHz).

Q: What is the MSL rating and why does it matter?

A: All recommended substitute parts carry MSL Level 1 (Unlimited) rating, indicating unlimited shelf life and no moisture sensitivity concerns. This matches the LM324DRG3 specification and ensures consistent handling and storage requirements across substitutes.

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