MAX4274BAEUA Equivalent & Substitute Parts

Part Overview

The MAX4274BAEUA is a general purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, featuring dual circuits in an 8-uMAX-EP package with rail-to-rail output capability. This device is classified as Obsolete product status, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.

The MAX4274BAEUA operates across a 2.5V to 5.5V supply range with a gain bandwidth product of 2 MHz and slew rate of 0.7V/µs. Its primary applications include general purpose signal conditioning and low-power amplification in portable and battery-powered systems.

Due to obsolescence, active substitute parts with compatible electrical and mechanical characteristics are required for new designs and production continuity.

Key Parameters

Parameter	MAX4274BAEUA	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Gain Bandwidth Product	2	MHz
Slew Rate	0.7	V/µs
Voltage - Input Offset	500	µV
Current - Input Bias	50	pA
Current - Supply (x2 Channels)	330	µA
Current - Output / Channel	65	mA
Voltage - Supply Span (Min)	2.5	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 85	°C
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad	—
Mounting Type	Surface Mount	—
RoHS Status	RoHS non-compliant	—

Substitute Part Grouping Explanation

Substitute parts for the MAX4274BAEUA are selected based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

Dual-circuit configuration (2 circuits per package)
Rail-to-rail output capability
8-pin surface mount package (8-TSSOP or 8-MSOP variants)
Supply voltage range: 2.5V to 5.5V minimum overlap
Operating temperature range: -40°C to 85°C minimum overlap
General purpose or audio amplifier classification

Secondary Selection Factors:

Gain bandwidth product: 1 MHz to 6.25 MHz range
Slew rate: 0.3V/µs to 3.7V/µs range
Input offset voltage: 100 µV to 1 mV range
Output current capability: 10 mA to 350 mA per channel
RoHS3 compliance status for modern procurement requirements

Substitutes are grouped into three categories based on amplifier type and performance characteristics: General Purpose (BU7442 series, LMR358, LMV552, LMV772), CMOS (AZV832, BU7462 series), and Audio (LME49726).

Parameter Comparison

Parameter	MAX4274BAEUA	AZV832MMTR-G1	BU7442FVM-TR	BU7442SFVM-TR	BU7462FVM-TR	BU7462SFVM-TR	LME49726MYX/NOPB	LMR358FVJ-GE2	LMV552MM/NOPB	LMV552MMX/NOPB	LMV772MM/NOPB	Unit
Amplifier Type	General Purpose	CMOS	General Purpose	General Purpose	CMOS	CMOS	Audio	General Purpose	General Purpose	General Purpose	General Purpose	—
Number of Circuits	2	2	2	2	2	2	2	2	2	2	2	—
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	—	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Differential, Rail-to-Rail	—
Gain Bandwidth Product	2	1	0.6	0.6	1	1	6.25	3	3	3	3.5	MHz
Slew Rate	0.7	0.45	0.3	0.3	1	1	3.7	1	1	1	1.4	V/µs
Voltage - Input Offset	500	500	1000	1000	1000	1000	500	100	1000	1000	250	µV
Current - Input Bias	50	1	1	1	1	1	0.2	15	20	20	0.23	pA
Current - Supply (x2 Channels)	330	70	100	100	300	300	700	210	37	37	600	µA
Current - Output / Channel	65	185	10	10	12	12	350	60	25	25	75	mA
Voltage - Supply Span (Min)	2.5	1.6	1.7	1.7	1.7	1.7	2.5	2.7	2.7	2.7	2.7	V
Voltage - Supply Span (Max)	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	V
Operating Temperature (Min)	-40	-40	-40	-40	-40	-40	-40	-40	-40	-40	-40	°C
Operating Temperature (Max)	85	85	85	105	85	105	85	85	125	125	125	°C
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad	8-MSOP	8-VSSOP, 8-MSOP (0.110", 2.80mm Width)	8-VSSOP, 8-MSOP (0.110", 2.80mm Width)	8-VSSOP, 8-MSOP (0.110", 2.80mm Width)	8-VSSOP, 8-MSOP (0.110", 2.80mm Width)	8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	—
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	—
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active	—

Engineering Selection Recommendations

For RoHS3 Compliant Applications:

All substitute parts listed are ROHS3 compliant, whereas the MAX4274BAEUA is RoHS non-compliant. For new designs or procurement requiring regulatory compliance, any substitute part is acceptable from a compliance perspective.

For Extended Temperature Range Requirements:

The MAX4274BAEUA operates to 85°C maximum. Substitute parts offering extended temperature operation to 105°C or 125°C include:

BU7442SFVM-TR (105°C maximum)
BU7462SFVM-TR (105°C maximum)
LMV552MM/NOPB (125°C maximum)
LMV552MMX/NOPB (125°C maximum)
LMV772MM/NOPB (125°C maximum)

For Low Supply Voltage Applications:

The MAX4274BAEUA requires minimum 2.5V supply. Substitute parts supporting lower minimum supply voltages (1.6V to 1.7V) include:

AZV832MMTR-G1 (1.6V minimum)
BU7442FVM-TR (1.7V minimum)
BU7442SFVM-TR (1.7V minimum)
BU7462FVM-TR (1.7V minimum)
BU7462SFVM-TR (1.7V minimum)

For Low Power Supply Current Applications:

The MAX4274BAEUA draws 330µA total supply current. Substitute parts with significantly lower supply current include:

AZV832MMTR-G1 (70µA)
BU7442FVM-TR (100µA)
BU7442SFVM-TR (100µA)
LMV552MM/NOPB (37µA)
LMV552MMX/NOPB (37µA)

For High Output Current Applications:

The MAX4274BAEUA provides 65mA per channel output current. Substitute parts with higher output current capability include:

AZV832MMTR-G1 (185mA per channel)
LME49726MYX/NOPB (350mA per channel)
LMV772MM/NOPB (75mA per channel)

For Audio Applications:

The LME49726MYX/NOPB is classified as an audio amplifier with enhanced performance characteristics including 6.25 MHz gain bandwidth product and 3.7V/µs slew rate, suitable for audio signal conditioning applications.

For General Purpose Low-Frequency Applications:

The BU7442FVM-TR and BU7442SFVM-TR offer the lowest gain bandwidth product (600 kHz) and slew rate (0.3V/µs), suitable for low-frequency signal conditioning where bandwidth is not a primary requirement.

Frequently Asked Questions (FAQ)

Q: Can the LMV552MM/NOPB directly replace the MAX4274BAEUA in existing designs?

A: The LMV552MM/NOPB is electrically compatible with the MAX4274BAEUA in terms of dual-circuit configuration, rail-to-rail output, and 8-pin surface mount package. However, the LMV552MM/NOPB has a lower minimum supply voltage (2.7V vs. 2.5V) and lower output current per channel (25mA vs. 65mA). Verify that your application does not require operation below 2.7V or output currents exceeding 25mA per channel.

Q: What is the difference between the 8-TSSOP and 8-MSOP packages?

A: Both packages are 8-pin surface mount variants with similar pinouts. The 8-TSSOP has a body width of 0.118" (3.00mm), while the 8-MSOP has a body width of 0.110" (2.80mm). The MAX4274BAEUA uses the 8-TSSOP package. Substitute parts using 8-MSOP packages may require PCB layout adjustments due to the slightly narrower body width. Verify footprint compatibility before design implementation.

Q: Why are some substitute parts classified as CMOS amplifiers while others are general purpose?

A: CMOS amplifiers (AZV832, BU7462 series) feature extremely low input bias current (1 pA) due to CMOS input stage technology, making them suitable for high-impedance signal sources. General purpose amplifiers (BU7442, LMR358, LMV552, LMV772) use bipolar or other input stage technologies with higher input bias current but often lower input offset voltage. Select based on your application's input impedance and offset voltage requirements.

Q: Is the LME49726MYX/NOPB suitable for general purpose applications, or only audio?

A: The LME49726MYX/NOPB is classified as an audio amplifier but functions as a general purpose amplifier. Its higher gain bandwidth product (6.25 MHz) and slew rate (3.7V/µs) make it suitable for higher-frequency applications compared to the MAX4274BAEUA. However, its higher supply current (700µA) and output current (350mA) may be unnecessary for low-power general purpose applications.

Q: What does RoHS3 compliance mean for component selection?

A: RoHS3 compliance indicates the component meets Restriction of Hazardous Substances Directive requirements, restricting lead and other hazardous materials. All substitute parts listed are ROHS3 compliant, whereas the MAX4274BAEUA is RoHS non-compliant. For new designs or procurement in regulated markets, RoHS3 compliant substitutes are required.

Q: Can I use the BU7462SFVM-TR in place of the MAX4274BAEUA for a 3.3V single supply application?

A: Yes. The BU7462SFVM-TR operates across 1.7V to 5.5V supply range, supporting 3.3V single supply operation. It features dual CMOS circuits with rail-to-rail output, 1V/µs slew rate, and 1 MHz gain bandwidth product. Verify that the 1 MHz bandwidth and 1V/µs slew rate meet your application's frequency response requirements.

Q: What is the significance of the "Exposed Pad" designation in the MAX4274BAEUA package?

A: The exposed pad provides a thermal connection to ground, improving heat dissipation. The MAX4274BAEUA and LME49726MYX/NOPB both feature exposed pads. Most other substitute parts (BU7442, BU7462, LMR358, LMV552, LMV772 series) use standard 8-pin packages without exposed pads. For applications requiring enhanced thermal performance, the LME49726MYX/NOPB is the preferred substitute.

Q: Which substitute part offers the best balance of performance and power consumption?

A: The LMV552MM/NOPB or LMV552MMX/NOPB offer the lowest supply current (37µA total) while maintaining 3 MHz gain bandwidth product and 1V/µs slew rate. These parts are ideal for battery-powered applications where power consumption is critical. The extended operating temperature range to 125°C provides additional design margin for temperature-sensitive applications.

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