LM324APWRG4 Equivalent & Substitute Parts

Part Overview

The LM324APWRG4 is a general-purpose operational amplifier featuring four independent circuits in a 14-TSSOP surface mount package. Manufactured by Texas Instruments, this device is designed for applications requiring low-power, general-purpose amplification across a wide supply voltage range of 3V to 30V.

The LM324APWRG4 is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent substitute components. Active alternatives are available from Texas Instruments and other manufacturers that maintain compatible electrical and mechanical specifications, ensuring seamless integration into existing designs.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Slew Rate	0.5	V/µs
Gain Bandwidth Product	1.2	MHz
Current - Input Bias	15	nA
Voltage - Input Offset	2	mV
Current - Supply (x4 Channels)	1.4	mA
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	30	V
Operating Temperature	0 to 70	°C
Package / Case	14-TSSOP (0.173", 4.40mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the LM324APWRG4 are classified based on strict electrical and mechanical compatibility. The primary substitution criteria are:

Critical Parameters for Substitution:

Four independent operational amplifier circuits
14-TSSOP or equivalent surface mount package (0.173", 4.40mm width)
Supply voltage range compatibility (minimum 3V, maximum ≥30V)
Input offset voltage of 2 mV
General-purpose amplifier classification
RoHS3 compliance and MSL Level 1

Substitution Categories:

Category 1: Direct Electrical Equivalents (Texas Instruments LM324 Series) Parts LM324APWR, LM324MT/NOPB, and LM324MTX/NOPB maintain identical or near-identical electrical specifications to the LM324APWRG4, with differences only in packaging format (Cut Tape, Tube, or Tape & Reel). These are primary substitutes for applications where the original part is unavailable.

Category 2: Low-Power Variants (Texas Instruments LP324 Series) Parts LP324MT/NOPB and LP324MTX/NOPB are low-power derivatives of the LM324 family. While maintaining the same package and supply voltage range, these parts feature reduced slew rate (0.05V/µs vs. 0.5V/µs), lower gain bandwidth product (100 kHz vs. 1.2 MHz), significantly lower supply current (85µA vs. 1.4mA), and reduced output current per channel (10 mA vs. 30 mA). These are suitable only for applications where bandwidth and output current requirements are less stringent.

Category 3: Cross-Manufacturer Equivalents (Rohm Semiconductor) Parts BA10324AFV-E2, BA2902FV-E2, BA2902SFV-E2, and BA3474FVJ-E2 from Rohm Semiconductor provide functional equivalence with variations in electrical performance. BA10324AFV-E2 and BA2902 series maintain moderate performance levels (500 kHz bandwidth, 0.2V/µs slew rate) suitable for general-purpose applications. BA3474FVJ-E2 offers enhanced performance (4 MHz bandwidth, 10V/µs slew rate) for higher-speed applications.

Category 4: Alternative Manufacturer (onsemi) Part LM224DTBR2G from onsemi provides a functionally compatible alternative with 1 MHz gain bandwidth product and extended temperature range (-25°C to 85°C).

Parameter Comparison

Part Number	Manufacturer	Slew Rate (V/µs)	GBW (MHz)	Input Bias (nA)	Supply Current (mA)	Output Current (mA)	Temp Range (°C)	Package	Status
LM324APWRG4	Texas Instruments	0.5	1.2	15	1.4	30	0 to 70	14-TSSOP	Discontinued
LM324APWR	Texas Instruments	0.5	1.2	15	1.4	30	0 to 70	14-TSSOP	Active
LM324MT/NOPB	Texas Instruments	—	1.0	45	1.5	40	0 to 70	14-TSSOP	Active
LM324MTX/NOPB	Texas Instruments	—	1.0	45	1.5	40	0 to 70	14-TSSOP	Active
LP324MT/NOPB	Texas Instruments	0.05	0.1	2	0.085	10	0 to 70	14-TSSOP	Active
LP324MTX/NOPB	Texas Instruments	0.05	0.1	2	0.085	10	0 to 70	14-TSSOP	Active
BA10324AFV-E2	Rohm Semiconductor	0.2	0.5	20	0.6	35	-40 to 85	14-LSSOP	Active
BA2902FV-E2	Rohm Semiconductor	0.2	0.5	20	0.7	30	-40 to 125	14-LSSOP	Active
BA2902SFV-E2	Rohm Semiconductor	0.2	0.5	20	0.7	30	-40 to 105	14-LSSOP	Active
BA3474FVJ-E2	Rohm Semiconductor	10	4.0	100	8	30	-40 to 85	14-TSSOP	Active
LM224DTBR2G	onsemi	—	1.0	90	—	40	-25 to 85	14-TSSOP	Active

Engineering Selection Recommendations

Primary Substitute: LM324APWR

The LM324APWR from Texas Instruments is the recommended primary substitute for the discontinued LM324APWRG4. This part maintains identical electrical specifications (0.5V/µs slew rate, 1.2 MHz gain bandwidth product, 15 nA input bias current, 1.4 mA supply current, 30 mA output current per channel) and operates across the same temperature range (0°C to 70°C). The only difference is packaging format: LM324APWR is supplied in Cut Tape and Digi-Reel format rather than the original packaging. Both parts are RoHS3 compliant with MSL Level 1 rating. With 105,200 units in stock, LM324APWR provides immediate availability for design transitions.

Secondary Substitutes: LM324MT/NOPB and LM324MTX/NOPB

These Texas Instruments alternatives maintain the same 14-TSSOP package and supply voltage range. LM324MT/NOPB (Tube packaging, 2,316 units in stock) and LM324MTX/NOPB (Cut Tape & Digi-Reel, 21,068 units in stock) feature slightly reduced gain bandwidth product (1.0 MHz vs. 1.2 MHz) and increased input bias current (45 nA vs. 15 nA), with marginally higher output current capability (40 mA vs. 30 mA). These parts are suitable for applications where the minor performance variations are acceptable.

Low-Power Alternative: LP324MT/NOPB and LP324MTX/NOPB

For power-constrained applications, LP324MT/NOPB (Tube, 1,467 units) and LP324MTX/NOPB (Tape & Reel, 2,264 units) offer significantly reduced supply current (85 µA vs. 1.4 mA) and lower slew rate (0.05V/µs vs. 0.5V/µs). These parts are suitable only for applications where bandwidth requirements do not exceed 100 kHz and output current does not exceed 10 mA per channel.

Cross-Manufacturer Options: Rohm Semiconductor BA Series

BA10324AFV-E2, BA2902FV-E2, and BA2902SFV-E2 from Rohm Semiconductor provide functional alternatives with moderate performance specifications (500 kHz bandwidth, 0.2V/µs slew rate). These parts feature extended temperature ranges (-40°C to 85°C, -40°C to 125°C, and -40°C to 105°C respectively) and are suitable for applications requiring wider operating temperature coverage. All three are RoHS3 compliant with MSL Level 1 rating.

BA3474FVJ-E2 from Rohm Semiconductor is a high-performance alternative featuring 4 MHz gain bandwidth product and 10V/µs slew rate, suitable for applications requiring enhanced speed performance. This part operates across -40°C to 85°C temperature range.

Alternative Manufacturer: onsemi LM224DTBR2G

LM224DTBR2G from onsemi provides a functionally compatible option with 1 MHz gain bandwidth product and extended temperature range (-25°C to 85°C). With 37,400 units in stock, this part offers good availability. The part is RoHS3 compliant with MSL Level 1 rating.

Compliance and Certification:

All recommended substitutes maintain RoHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage processes. All parts carry EAR99 export classification and are REACH unaffected.

Frequently Asked Questions (FAQ)

Q1: Can LM324APWR be used as a direct replacement for LM324APWRG4?

Yes. LM324APWR is electrically and functionally identical to LM324APWRG4, with identical specifications for slew rate (0.5V/µs), gain bandwidth product (1.2 MHz), input bias current (15 nA), supply current (1.4 mA), output current (30 mA per channel), and operating temperature range (0°C to 70°C). The difference is packaging format only. Both parts use the same 14-TSSOP package and are RoHS3 compliant with MSL Level 1 rating.

Q2: What are the key differences between LM324APWRG4 and LM324MT/NOPB?

LM324MT/NOPB has slightly reduced gain bandwidth product (1.0 MHz vs. 1.2 MHz) and higher input bias current (45 nA vs. 15 nA). Output current capability is marginally higher (40 mA vs. 30 mA). Both parts operate across the same supply voltage range (3V to 30V) and temperature range (0°C to 70°C). The 14-TSSOP package is identical. These differences are acceptable for most general-purpose applications.

Q3: When should LP324MT/NOPB or LP324MTX/NOPB be selected instead of LM324APWRG4?

LP324 series parts should be selected only for applications where power consumption is critical and bandwidth requirements are low. These parts consume 85 µA supply current compared to 1.4 mA for LM324APWRG4, but offer only 100 kHz gain bandwidth product (vs. 1.2 MHz) and 10 mA maximum output current per channel (vs. 30 mA). Applications requiring bandwidth above 100 kHz or output current above 10 mA per channel must use LM324 series parts.

Q4: Are Rohm Semiconductor BA series parts compatible with LM324APWRG4?

BA10324AFV-E2, BA2902FV-E2, and BA2902SFV-E2 are functionally compatible for general-purpose amplification applications. These parts feature 500 kHz gain bandwidth product (vs. 1.2 MHz for LM324APWRG4) and 0.2V/µs slew rate (vs. 0.5V/µs). They are suitable for applications where bandwidth does not exceed 500 kHz. All three parts use 14-LSSOP package (mechanically compatible with 14-TSSOP) and offer extended temperature ranges. BA3474FVJ-E2 offers higher performance (4 MHz bandwidth, 10V/µs slew rate) for speed-critical applications.

Q5: What is the difference between 14-TSSOP and 14-LSSOP packages?

Both 14-TSSOP and 14-LSSOP are surface mount packages with identical pitch and width (0.173", 4.40mm). The packages are mechanically compatible for PCB layout purposes. TSSOP denotes Thin Shrink Small Outline Package, while LSSOP denotes Leadless Shrink Small Outline Package. Pin assignments and electrical functionality are identical for equivalent parts.

Q6: Can BA3474FVJ-E2 be used in place of LM324APWRG4 for all applications?

BA3474FVJ-E2 can be used as a substitute only if the application can tolerate higher supply current (8 mA vs. 1.4 mA) and higher input bias current (100 nA vs. 15 nA). The part offers superior performance with 4 MHz gain bandwidth product and 10V/µs slew rate, making it suitable for higher-speed applications. Extended temperature range (-40°C to 85°C) provides additional environmental coverage. Verify that the application circuit can accommodate the higher current consumption before substitution.

Q7: What is the inventory status of substitute parts?

LM324APWR offers the highest availability with 105,200 units in stock. LM324MTX/NOPB has 21,068 units available. BA10324AFV-E2 has 27,661 units in stock. LM224DTBR2G from onsemi has 37,400 units available. LP324MTX/NOPB has 2,264 units, and BA3474FVJ-E2 has only 958 units in stock. For immediate availability, LM324APWR is the recommended choice.

Q8: Are all substitute parts RoHS3 compliant?

Yes. All recommended substitute parts (LM324APWR, LM324MT/NOPB, LM324MTX/NOPB, LP324MT/NOPB, LP324MTX/NOPB, BA10324AFV-E2, BA2902FV-E2, BA2902SFV-E2, BA3474FVJ-E2, and LM224DTBR2G) are RoHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating. All parts carry EAR99 export classification and are REACH unaffected.

Q9: What packaging formats are available for LM324APWR?

LM324APWR is available in Cut Tape (CT) and Digi-Reel format. This differs from the original LM324APWRG4 packaging. If specific packaging format is required, LM324MT/NOPB (Tube) or LM324MTX/NOPB (Cut Tape & Digi-Reel) provide alternative packaging options while maintaining identical electrical specifications.

Q10: Can onsemi LM224DTBR2G be used as a substitute?

Yes. LM224DTBR2G from onsemi is functionally compatible with LM324APWRG4 for general-purpose amplification. The part features 1 MHz gain bandwidth product (vs. 1.2 MHz) and operates across -25°C to 85°C temperature range (vs. 0°C to 70°C). Input bias current is higher at 90 nA (vs. 15 nA). The part is RoHS3 compliant with MSL Level 1 rating and offers good availability with 37,400 units in stock.

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