AS324GTR-E1 Equivalent & Substitute Parts

Part Overview

The AS324GTR-E1 is a general-purpose operational amplifier integrated circuit manufactured by Diodes Incorporated. This 4-circuit linear amplifier is housed in a 14-TSSOP surface-mount package and operates across a wide supply voltage range of 3V to 36V. The device is currently in active product status with 8200 units in stock.

Substitute parts are necessary when the AS324GTR-E1 becomes unavailable, when alternative packaging formats are required, or when design specifications demand enhanced performance characteristics such as improved slew rate, lower input bias current, or extended temperature operating ranges.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Current - Input Bias	20	nA
Voltage - Input Offset	2	mV
Current - Supply (x4 Channels)	1	mA
Current - Output / Channel	40	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	-40 to 85	°C
Package / Case	14-TSSOP (0.173", 4.40mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	3 (168 Hours)	—

Substitute Part Grouping Explanation

Substitution of the AS324GTR-E1 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Number of circuits: 4 (all substitutes must contain 4 operational amplifier circuits)
Package type: 14-TSSOP surface-mount package with 0.173" width and 4.40mm width specification
Supply voltage range: Minimum 3V and maximum at least 36V
Operating temperature range: Must encompass -40°C to 85°C or provide extended range

Performance Parameters Affecting Substitution:

Current - Input Bias: 20 nA baseline; lower values indicate improved performance
Voltage - Input Offset: 2 mV baseline; lower values indicate improved precision
Current - Supply: 1 mA baseline per 4 channels; lower values indicate reduced power consumption
Current - Output / Channel: 40 mA baseline; equal or higher values maintain compatibility

Substitute parts are grouped into two categories: direct functional equivalents (general-purpose amplifiers with identical electrical specifications) and enhanced-performance alternatives (J-FET amplifiers or parts with superior slew rate and bandwidth characteristics).

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Input Bias (nA)	Input Offset (mV)	Supply Current (mA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Product Status
AS324GTR-E1	Diodes Incorporated	General Purpose	20	2	1	40	3	36	-40 to 85	Active
AD8684ARUZ	Analog Devices Inc.	J-FET	0.006	0.35	0.21	12	9	36	-40 to 85	Active
LM2902KAVMPWREP	Texas Instruments	General Purpose	20	3	1.4	60	3	32	-55 to 125	Active
LM324MT/NOPB	Texas Instruments	General Purpose	45	2	1.5	40	3	32	0 to 70	Active
LM324MTX/NOPB	Texas Instruments	General Purpose	45	2	1.5	40	3	32	0 to 70	Active
LM324PT	Rohm Semiconductor	General Purpose	20	1	1	30	3	32	-40 to 85	Obsolete
LM324PWRG3	Texas Instruments	General Purpose	20	3	1.4	30	3	30	0 to 70	Obsolete
LP2902PW	Texas Instruments	General Purpose	2	2	0.085	10	3	32	-40 to 85	Last Time Buy
LP324PW	Texas Instruments	General Purpose	2	2	0.085	10	3	32	0 to 70	Last Time Buy
LP324PWR	Texas Instruments	General Purpose	2	2	0.085	10	3	32	0 to 70	Active
MC33074DTBR2G	onsemi	General Purpose	100	1	1.9	30	3	44	-40 to 85	Active

Engineering Selection Recommendations

For Direct Functional Replacement (Active Status):

LM2902KAVMPWREP and LM324MTX/NOPB are suitable direct replacements when the AS324GTR-E1 becomes unavailable. Both devices maintain the 4-circuit configuration in 14-TSSOP packaging and operate within compatible supply voltage ranges. LM2902KAVMPWREP offers extended operating temperature range (-55°C to 125°C) and higher output current capability (60 mA per channel). LM324MTX/NOPB provides the largest inventory availability (21,068 units) and maintains identical input offset voltage specification (2 mV).

For Enhanced Performance Applications:

AD8684ARUZ provides superior performance characteristics with J-FET input architecture, delivering significantly lower input bias current (6 pA versus 20 nA) and reduced input offset voltage (350 µV versus 2 mV). This device is suitable for applications requiring precision signal conditioning. However, the minimum supply voltage requirement of 9V restricts use in 3V to 9V applications.

For Low-Power Applications:

LP324PWR is an active-status device offering ultra-low supply current consumption (85 µA per 4 channels versus 1 mA), making it suitable for battery-powered or energy-constrained designs. This device maintains the -40°C to 85°C operating temperature range of the AS324GTR-E1.

For Extended Supply Voltage Range:

MC33074DTBR2G supports the highest maximum supply voltage (44V versus 36V) and is suitable for applications requiring operation beyond 36V. This device maintains active product status and ROHS3 compliance.

Devices to Avoid for New Designs:

LM324PT, LM324PWRG3, LP324PW, and LP2902PW carry obsolete or last-time-buy status and should not be selected for new product development.

Frequently Asked Questions (FAQ)

Q: Can the AD8684ARUZ replace the AS324GTR-E1 in all applications?

A: The AD8684ARUZ is electrically compatible in 14-TSSOP packaging and maintains the 4-circuit configuration. However, the minimum supply voltage of 9V restricts its use in applications operating below 9V. The AS324GTR-E1 operates from 3V minimum. Verify supply voltage requirements before substitution.

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

A: Both devices are identical in electrical specifications and packaging. The primary 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).

Q: Why do LP324PWR and LP2902PW have lower supply current specifications?

A: These devices employ low-power design architecture with reduced output current capability (10 mA per channel versus 40 mA). They are suitable only for applications where output current requirements do not exceed 10 mA per channel. Applications requiring 40 mA output current cannot use these devices.

Q: Is the AS324GTR-E1 compatible with the MC33074DTBR2G in terms of pin configuration?

A: Both devices use the 14-TSSOP package with identical pinout. Pin-for-pin substitution is possible. However, MC33074DTBR2G has higher input bias current (100 nA versus 20 nA) and higher supply current (1.9 mA versus 1 mA), which may affect circuit performance in precision applications.

Q: What is the significance of the MSL (Moisture Sensitivity Level) rating?

A: The AS324GTR-E1 carries MSL 3 (168 Hours), indicating it requires controlled moisture exposure during storage and handling. Substitute parts with MSL 1 (Unlimited) such as LM324MTX/NOPB and LP324PWR have no moisture sensitivity restrictions and offer simplified storage and handling requirements.

Q: Can the LM2902KAVMPWREP operate at the full 36V maximum supply voltage of the AS324GTR-E1?

A: No. LM2902KAVMPWREP has a maximum supply voltage rating of 32V, which is 4V lower than the AS324GTR-E1 specification of 36V. Applications requiring operation at 33V to 36V must use the AS324GTR-E1 or MC33074DTBR2G (44V maximum).

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance certification, matching the AS324GTR-E1 environmental compliance status.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message