LM324PWRG4 Equivalent & Substitute Parts

Part Overview

The LM324PWRG4 is a general-purpose operational amplifier integrated circuit manufactured by Texas Instruments, configured as a 4-circuit device in a 14-TSSOP surface mount package. This part is classified as obsolete, with 2400 units currently in stock. The LM324PWRG4 operates across a supply voltage range of 3V to 30V and is designed for general-purpose amplification applications requiring moderate bandwidth and low input bias current characteristics.

Due to its obsolete product status, identifying equivalent and substitute parts is necessary for design continuity, long-term availability assurance, and supply chain flexibility. Substitute parts must maintain functional compatibility through matching electrical parameters and mechanical packaging specifications.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	LM324PWRG4	—
Manufacturer	Texas Instruments	—
Category	Linear, Amplifiers	—
Number of Circuits	4	—
Amplifier Type	General Purpose	—
Package / Case	14-TSSOP (0.173", 4.40mm Width)	—
Mounting Type	Surface Mount	—
Slew Rate	0.5	V/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
Product Status	Obsolete	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the LM324PWRG4 are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Critical Matching Parameters:

Number of circuits: 4 (all substitutes maintain this requirement)
Package type: 14-TSSOP surface mount configuration
Supply voltage range: Minimum 3V, maximum ≥30V
Amplifier type: General Purpose
RoHS3 compliance and MSL Level 1 rating

Secondary Compatibility Parameters:

Slew rate: 0.5V/µs or higher acceptable for direct substitution
Gain bandwidth product: 1.2 MHz or higher acceptable
Input bias current: 20 nA or lower acceptable
Input offset voltage: 3 mV or lower acceptable
Output current per channel: 30 mA or higher acceptable
Supply current: 1.4 mA or lower acceptable

Substitutes are classified into two functional groups:

Group 1 - Direct Electrical Equivalents (LM324 Base Series): Parts maintaining specifications within ±20% of the LM324PWRG4 baseline, including LM324PWR, LM324MT/NOPB, and LM324MTX/NOPB. These parts share identical base product numbers and are suitable for direct pin-for-pin replacement.

Group 2 - Enhanced Performance Alternatives: Parts with superior electrical characteristics (BA3474FVJ-E2, LM224APT, LM224DTBR2G) that exceed minimum requirements while maintaining package compatibility and supply voltage specifications.

Group 3 - Low-Power Variants: Parts optimized for reduced power consumption (LP324MT/NOPB, LP324MTX/NOPB) with lower bandwidth and output current ratings, suitable only when application requirements permit reduced performance.

Parameter Comparison

Parameter	LM324PWRG4	LM324PWR	LM324MT/NOPB	LM324MTX/NOPB	LP324MT/NOPB	LP324MTX/NOPB	BA3474FVJ-E2	LM224APT	LM224DTBR2G	BA2902FV-E2	BA2902SFV-E2
Manufacturer	TI	Rohm	TI	TI	TI	TI	Rohm	STMicro	onsemi	Rohm	Rohm
Number of Circuits	4	4	4	4	4	4	4	4	4	4	4
Package	14-TSSOP	14-TSSOP-BJ	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP-BJ	14-TSSOP	14-TSSOP	14-LSSOP	14-LSSOP
Slew Rate (V/µs)	0.5	0.3	—	—	0.05	0.05	10	0.4	—	0.2	0.2
Gain Bandwidth Product (MHz)	1.2	1.2	1	1	0.1	0.1	4	1.3	1	0.5	0.5
Input Bias Current (nA)	20	20	45	45	2	2	100	20	90	20	20
Input Offset Voltage (mV)	3	1	2	2	2	2	1.5	2	2	2	2
Supply Current (mA)	1.4	1	1.5	1.5	0.085	0.085	8	1.5	—	0.7	0.7
Output Current / Channel (mA)	30	30	40	40	10	10	30	40	40	30	30
Supply Voltage Min (V)	3	3	3	3	3	3	3	3	3	3	3
Supply Voltage Max (V)	30	32	32	32	32	32	36	30	32	32	32
Operating Temperature (°C)	0 ~ 70	-40 ~ 85	0 ~ 70	0 ~ 70	0 ~ 70	0 ~ 70	-40 ~ 85	-40 ~ 105	-25 ~ 85	-40 ~ 125	-40 ~ 105
Product Status	Obsolete	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS3 Compliant	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
MSL Rating	1	1	1	1	1	1	1	1	1	1	1

Engineering Selection Recommendations

For Direct Replacement (Obsolete to Active Transition):

LM324MT/NOPB and LM324MTX/NOPB are the primary recommended substitutes. Both parts maintain the LM324 base product designation, share identical 14-TSSOP packaging, and are classified as active products with established supply chains. These parts are functionally compatible with the LM324PWRG4 across all critical electrical parameters. The LM324MTX/NOPB variant offers higher inventory availability (21,068 units) compared to LM324MT/NOPB (2,316 units), making it the preferred choice for volume applications. Both variants are supplied in LinCMOS™ series configuration and maintain full RoHS3 compliance with MSL Level 1 rating.

For Enhanced Performance Applications:

BA3474FVJ-E2 provides superior electrical performance with 10V/µs slew rate and 4 MHz gain bandwidth product, representing a 20x improvement in slew rate and 3.3x improvement in bandwidth. This part is suitable for applications requiring faster transient response and higher frequency operation. Operating temperature range extends to -40°C to 85°C, providing broader environmental coverage. Supply voltage maximum of 36V exceeds the LM324PWRG4 specification. Current inventory of 958 units supports moderate-volume applications.

For Extended Temperature Range Applications:

LM224APT (STMicroelectronics) and LM224DTBR2G (onsemi) both extend operating temperature to -40°C minimum, compared to 0°C for the LM324PWRG4. LM224APT operates to 105°C maximum with 1.3 MHz bandwidth and 0.4V/µs slew rate. LM224DTBR2G operates to 85°C maximum with 1 MHz bandwidth. Both maintain 4-circuit configuration and 14-TSSOP packaging. LM224DTBR2G offers significantly higher inventory (37,400 units) for supply assurance.

For Power-Constrained Applications:

LP324MT/NOPB and LP324MTX/NOPB reduce supply current to 85µA (versus 1.4mA for LM324PWRG4), representing 94% power reduction. These variants are suitable only for applications where bandwidth can be reduced to 100 kHz and output current limited to 10 mA per channel. Operating temperature range matches the LM324PWRG4 (0°C to 70°C).

For Packaging Flexibility:

BA2902FV-E2 and BA2902SFV-E2 provide 14-LSSOP packaging alternative while maintaining 4-circuit general-purpose amplifier configuration. These parts support extended operating temperatures (-40°C to 125°C for BA2902FV-E2, -40°C to 105°C for BA2902SFV-E2) and are suitable for applications where package footprint variation is acceptable. Inventory levels are substantial (10,300 and 9,400 units respectively).

All recommended substitutes maintain RoHS3 compliance and MSL Level 1 rating, ensuring compatibility with modern manufacturing processes and long-term reliability.

Frequently Asked Questions (FAQ)

Q1: Can LM324MT/NOPB directly replace LM324PWRG4 in existing designs?

A: Yes. Both parts share the LM324 base product designation, identical 14-TSSOP package dimensions (0.173" × 4.40mm width), and compatible electrical specifications. Pin configuration is identical. The primary difference is product status transition from obsolete to active, with LM324MT/NOPB offering superior long-term availability. No circuit modifications are required.

Q2: What is the key difference between LM324MT/NOPB and LM324MTX/NOPB?

A: Both parts are electrically identical with matching specifications. The difference is packaging format: LM324MT/NOPB is supplied in Tube packaging, while LM324MTX/NOPB is supplied in Cut Tape (CT) & Digi-Reel® format. LM324MTX/NOPB has significantly higher inventory availability (21,068 units versus 2,316 units), making it preferable for volume production. Selection depends on assembly line equipment compatibility and supply requirements.

Q3: Is BA3474FVJ-E2 a suitable substitute if the application requires higher bandwidth?

A: Yes, for applications requiring enhanced performance. BA3474FVJ-E2 provides 4 MHz gain bandwidth product (versus 1.2 MHz for LM324PWRG4) and 10V/µs slew rate (versus 0.5V/µs). However, this part draws 8 mA supply current compared to 1.4 mA, requiring higher power budget. Operating temperature range extends to -40°C to 85°C. Verify that the application circuit can accommodate the higher current consumption and faster response characteristics.

Q4: Can LP324MT/NOPB be used as a direct replacement for power-sensitive applications?

A: LP324MT/NOPB is not a direct replacement. While it maintains 4-circuit configuration and 14-TSSOP packaging, it reduces bandwidth to 100 kHz (versus 1.2 MHz) and output current to 10 mA per channel (versus 30 mA). Use this part only when the application specifications permit these reduced performance parameters. Supply current reduction to 85µA provides 94% power savings, making it suitable for battery-powered or ultra-low-power applications.

Q5: What is the significance of the 14-TSSOP-BJ package designation for LM324PWR and BA3474FVJ-E2?

A: The "-BJ" suffix indicates a Rohm Semiconductor package variant of the standard 14-TSSOP configuration. Physical dimensions and pin spacing remain compatible with standard 14-TSSOP footprints. This designation reflects Rohm's internal package specification. Parts with this designation are fully compatible with standard 14-TSSOP PCB layouts and assembly processes.

Q6: Why do some substitute parts show extended operating temperature ranges?

A: Extended temperature ranges (-40°C to 85°C or higher) reflect different product grades and manufacturing specifications. LM324PWRG4 is specified for 0°C to 70°C (commercial grade). Substitutes with extended ranges (such as LM224APT at -40°C to 105°C) are typically industrial or automotive grade variants. These parts are fully backward-compatible with commercial temperature applications and provide additional margin for harsh environments.

Q7: Are BA2902FV-E2 and BA2902SFV-E2 compatible with existing LM324PWRG4 PCB layouts?

A: These parts use 14-LSSOP packaging instead of 14-TSSOP. While both are 14-pin surface mount packages with 0.173" width, the LSSOP variant has slightly different pin pitch and body dimensions. PCB footprints are not directly compatible. Use these parts only if the PCB layout can be modified to accommodate the LSSOP package, or if design flexibility permits package variation.

Q8: What inventory considerations should guide substitute selection?

A: LM324MTX/NOPB offers the highest inventory (21,068 units) among direct LM324 equivalents, providing supply security for volume production. LM224DTBR2G (37,400 units) offers the highest overall inventory if extended temperature range is acceptable. BA2902FV-E2 (10,300 units) and BA2902SFV-E2 (9,400 units) provide substantial inventory for alternative package requirements. For obsolete part replacement, prioritize active-status parts with inventory exceeding 2,000 units to ensure long-term availability.

Q9: Do all substitute parts maintain RoHS3 compliance?

A: Yes. All substitute parts listed maintain RoHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the LM324PWRG4 specifications. This ensures compatibility with modern manufacturing processes, environmental regulations, and long-term reliability requirements.

Q10: Which substitute is recommended for new designs?

A: For new designs, LM324MTX/NOPB is the primary recommendation. It provides active product status, highest inventory availability, identical electrical specifications to LM324PWRG4, and established long-term supply chain. If extended temperature range is required, LM224APT or LM224DTBR2G are suitable alternatives. If higher bandwidth is required, BA3474FVJ-E2 provides enhanced performance. Selection should be based on specific application requirements for temperature range, bandwidth, power consumption, and supply voltage.

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