MAX4074BAESA Equivalent & Substitute Parts Reference

Part Overview

The MAX4074BAESA is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, housed in an 8-SOIC surface-mount package. This device is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and production continuity. The MAX4074BAESA operates as a single-circuit rail-to-rail amplifier suitable for general-purpose signal conditioning applications across a 2.5V to 5.5V supply range.

Due to its obsolete status, equivalent substitute parts must be selected based on matching electrical characteristics, mechanical compatibility, and operational parameters that preserve circuit functionality without requiring design modifications.

Key Parameters

Parameter	MAX4074BAESA	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Slew Rate	0.1	V/µs
-3dB Bandwidth	200	kHz
Current - Input Bias	0.8	pA
Voltage - Input Offset	200	µV
Current - Supply	37	µA
Current - Output / Channel	22	mA
Voltage - Supply Span (Min)	2.5	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 70	°C
Mounting Type	Surface Mount	—
RoHS Status	Non-compliant	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the MAX4074BAESA is determined by the following critical parameters:

Mechanical Compatibility: All substitute parts must use the 8-SOIC (0.154", 3.90mm Width) package to ensure direct pin-for-pin compatibility without PCB redesign.

Electrical Functionality: Substitute parts must maintain general-purpose amplifier operation with rail-to-rail output capability and single-circuit configuration.

Supply Voltage Range: The substitute must operate within or encompass the original 2.5V to 5.5V supply span. Parts with extended ranges (2.2V minimum or 6V maximum) remain compatible as they cover the original operating window.

Output Drive Capability: Current output per channel must meet or exceed 22 mA to support equivalent load conditions.

Thermal Operating Range: Substitutes operating at -40°C to 125°C exceed the original -40°C to 70°C range, providing enhanced temperature coverage suitable for replacement applications.

The identified substitute parts are grouped into two categories: Active General-Purpose Amplifiers (TSV911IDT, TSV911IYDT, OPA373AIDR, MCP6281T-E/SN, MCP6L71T-E/SN) and Active Zero-Drift Amplifiers (LMP2021MA/NOPB, LMP2021MAX/NOPB). All substitutes are currently active products with RoHS3 compliance, addressing the obsolescence and compliance limitations of the original part.

Parameter Comparison

Parameter	MAX4074BAESA	LMP2021MA/NOPB	LMP2021MAX/NOPB	MCP6281T-E/SN	MCP6L71T-E/SN	OPA373AIDR	TSV911IDT	TSV911IYDT	Unit
Amplifier Type	General Purpose	Zero-Drift	Zero-Drift	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	—
Number of Circuits	1	1	1	1	1	1	1	1	—
Output Type	Rail-to-Rail	—	—	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	—
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	—
Slew Rate	0.1	2.6	2.6	2.5	0.9	5	4.5	4.5	V/µs
Gain Bandwidth Product	—	5	5	5	2	6.5	8	8	MHz
Current - Input Bias	0.8	25	25	1	1	0.5	1	1	pA
Voltage - Input Offset	200	0.4	0.4	3	1	1	100	100	µV
Current - Supply	37	1100	1100	450	150	585	820	820	µA
Current - Output / Channel	22	50	50	25	—	—	35	35	mA
Voltage - Supply Span (Min)	2.5	2.2	2.2	2.2	2	2.3	2.5	2.5	V
Voltage - Supply Span (Max)	5.5	5.5	5.5	6	6	5.5	5.5	5.5	V
Operating Temperature	-40 to 70	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	—
RoHS Status	Non-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	—

Engineering Selection Recommendations

For Direct Replacement with Enhanced Performance:

The TSV911IDT and TSV911IYDT (STMicroelectronics) provide the most direct functional replacement. Both maintain identical 8-SOIC packaging, rail-to-rail output, and supply voltage compatibility (2.5V to 5.5V). These parts exceed the original slew rate (4.5V/µs vs. 0.1V/µs) and bandwidth (8 MHz gain-bandwidth product), offering improved dynamic performance. The TSV911IYDT includes AEC-Q100 automotive qualification, suitable for applications requiring automotive-grade reliability. Both are RoHS3 compliant and currently in active production with substantial inventory availability.

For Low-Power Applications:

The MCP6L71T-E/SN (Microchip Technology) is optimal for power-constrained designs, consuming only 150µA supply current compared to the original 37µA. This part maintains rail-to-rail output and 8-SOIC packaging with extended supply range (2V to 6V). The trade-off is reduced slew rate (0.9V/µs) and bandwidth (2 MHz), suitable for low-frequency signal conditioning where power efficiency is prioritized.

For Precision Applications:

The LMP2021MA/NOPB and LMP2021MAX/NOPB (Texas Instruments) are zero-drift amplifiers offering exceptional input offset voltage (0.4µV vs. 200µV original). These parts are suitable for precision measurement and instrumentation where offset drift compensation is critical. Both are RoHS3 compliant and active products. The LMP2021MAX/NOPB is supplied in Tape & Reel packaging for high-volume production.

For Balanced Performance:

The MCP6281T-E/SN (Microchip Technology) and OPA373AIDR (Texas Instruments) provide balanced performance across slew rate, bandwidth, and supply current. Both maintain rail-to-rail output and 8-SOIC packaging with extended operating temperature (-40°C to 125°C). The OPA373AIDR offers higher slew rate (5V/µs) and bandwidth (6.5 MHz), while the MCP6281T-E/SN provides moderate performance with 450µA supply current. Both are RoHS3 compliant and actively produced.

Compliance Consideration:

All identified substitutes are RoHS3 compliant, addressing the non-compliant status of the obsolete MAX4074BAESA. This compliance upgrade is mandatory for new designs and production continuity in regulated markets.

Frequently Asked Questions (FAQ)

Q: Can the TSV911IDT directly replace the MAX4074BAESA without PCB modifications?

A: Yes. Both devices use identical 8-SOIC (0.154", 3.90mm Width) packaging with the same pin configuration. The TSV911IDT is pin-compatible and requires no PCB layout changes. However, the improved slew rate (4.5V/µs vs. 0.1V/µs) and bandwidth (8 MHz vs. 200 kHz) may affect circuit behavior in high-frequency applications; circuit simulation is recommended to confirm performance equivalence.

Q: What is the difference between LMP2021MA/NOPB and LMP2021MAX/NOPB?

A: Both parts are electrically identical zero-drift amplifiers with matching electrical specifications. The primary difference is packaging: LMP2021MA/NOPB is supplied in Tube packaging, while LMP2021MAX/NOPB is supplied in Tape & Reel (TR) format. Selection depends on production volume and assembly line requirements. Tape & Reel is standard for automated pick-and-place assembly.

Q: Is the MCP6L71T-E/SN suitable for high-speed applications?

A: No. The MCP6L71T-E/SN has a slew rate of 0.9V/µs and 2 MHz gain-bandwidth product, making it suitable only for low-frequency signal conditioning below 100 kHz. For applications requiring faster response, select TSV911IDT (4.5V/µs, 8 MHz), OPA373AIDR (5V/µs, 6.5 MHz), or MCP6281T-E/SN (2.5V/µs, 5 MHz).

Q: Why do substitute parts have higher supply current than the original MAX4074BAESA?

A: The MAX4074BAESA operates at exceptionally low supply current (37µA), which is characteristic of older general-purpose amplifier designs with limited performance. Modern substitutes trade increased quiescent current for improved slew rate, bandwidth, input offset voltage, and temperature stability. The MCP6L71T-E/SN (150µA) offers the lowest modern alternative, while TSV911IDT (820µA) provides the highest performance.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts carry RoHS3 compliance certification. The original MAX4074BAESA is RoHS non-compliant. Substitution with any listed part upgrades compliance status, which is required for new production and designs targeting regulated markets.

Q: What is the operating temperature difference, and does it matter?

A: The MAX4074BAESA operates from -40°C to 70°C, while all substitutes operate from -40°C to 125°C. The extended upper temperature limit (125°C vs. 70°C) provides additional thermal margin and is beneficial for applications in high-temperature environments or with limited thermal management. This does not create compatibility issues; the substitute simply provides enhanced temperature coverage.

Q: Can I use the LMP2021 series in place of general-purpose amplifiers?

A: Yes, with consideration. The LMP2021 series are zero-drift amplifiers, a specialized category offering superior input offset voltage (0.4µV vs. 200µV or higher in general-purpose types). They are functionally compatible as general-purpose amplifiers but are optimized for precision measurement applications. Use LMP2021 when offset drift minimization is a design requirement; otherwise, general-purpose alternatives (TSV911, OPA373, MCP6281) are more cost-effective.

Q: What is the significance of the TSV911IYDT automotive qualification?

A: The TSV911IYDT carries AEC-Q100 automotive qualification, indicating compliance with automotive reliability and environmental stress testing standards. This qualification is required for automotive applications but is not necessary for industrial or consumer electronics. Both TSV911IDT (standard) and TSV911IYDT (automotive) are electrically identical; selection depends on application requirements.

Q: Which substitute offers the best input offset voltage performance?

A: The LMP2021MA/NOPB and LMP2021MAX/NOPB offer the lowest input offset voltage at 0.4µV, compared to 200µV for the original MAX4074BAESA. For general-purpose substitutes, the OPA373AIDR provides 1µV offset voltage, followed by MCP6L71T-E/SN at 1µV and TSV911 series at 100µV. Selection depends on precision requirements of the application.

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