MAX4074ADEUK-T Equivalent & Substitute Parts

Part Overview

The MAX4074ADEUK-T is a general purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, housed in a SOT-23-5 surface mount package. This device features rail-to-rail output capability and is designed for single-circuit amplification applications. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The MAX4074ADEUK-T operates across a supply voltage range of 2.5 V to 5.5 V with an operating temperature range of -40°C to 70°C.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
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
Package / Case	SC-74A, SOT-753	—
Supplier Device Package	SOT-23-5	—
Mounting Type	Surface Mount	—
RoHS Status	RoHS non-compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the MAX4074ADEUK-T is determined by the following critical parameters:

Package Compatibility: All substitute parts must use SOT-23-5 surface mount packaging to ensure direct board-level compatibility without layout modifications.

Electrical Characteristics: Substitute parts must maintain general purpose amplifier functionality with rail-to-rail output capability. Supply voltage range must encompass or exceed the original 2.5 V to 5.5 V specification to ensure operation across the same power supply conditions.

Performance Parameters: While the MAX4074ADEUK-T operates at 0.1 V/µs slew rate and 200 kHz bandwidth, substitute parts with higher performance metrics remain functionally compatible in applications where the original specifications are met or exceeded.

Temperature Range: Substitute parts operating across -40°C to 70°C or wider temperature ranges maintain compatibility with the original operating conditions.

Compliance Status: Given the obsolete status of the MAX4074ADEUK-T and its RoHS non-compliant classification, active substitute parts with RoHS3 compliance are preferred for new designs and long-term availability.

Parameter Comparison

Parameter	MAX4074ADEUK-T	LMP2021MF/NOPB	LMP2021MFX/NOPB	LMV321LILT	LMV710M5/NOPB	LMV721IDBVR	MCP6271T-E/OT	MCP6L71RT-E/OT
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
Slew Rate (V/µs)	0.1	2.6	2.6	0.7	5	5.25	0.9	0.9
Gain Bandwidth Product (MHz)	—	5	5	1.3	5	10	2	2
Current - Input Bias (pA)	0.8	25	25	27000	4	260000	1	1
Voltage - Input Offset (µV)	200	0.4	0.4	1000	400	80	3000	1000
Current - Supply (mA)	0.037	1.1	1.1	0.13	1.17	1.03	0.17	0.15
Current - Output / Channel (mA)	22	50	50	70	40	—	25	—
Voltage - Supply Span Min (V)	2.5	2.2	2.2	2.7	2.7	2.2	2	2
Voltage - Supply Span Max (V)	5.5	5.5	5.5	5.5	5.5	5	6	6
Operating Temperature (°C)	-40 to 70	-40 to 125	-40 to 125	-40 to 125	-40 to 85	-40 to 105	-40 to 125	-40 to 125
Package / Case	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753
Supplier Device Package	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	RoHS 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

Primary Substitutes for Direct Replacement:

The LMP2021MF/NOPB, LMP2021MFX/NOPB, and LMP2021MFE/NOPB from Texas Instruments represent the closest functional equivalents. These zero-drift amplifiers maintain SOT-23-5 packaging and supply voltage compatibility (2.2 V to 5.5 V). All three variants are active products with ROHS3 compliance, providing long-term availability and regulatory alignment. The zero-drift architecture delivers superior input offset voltage performance (0.4 µV versus 200 µV) and extended operating temperature range (-40°C to 125°C).

General Purpose Alternatives with Enhanced Performance:

The LMV321LILT from STMicroelectronics, LMV710M5/NOPB from Texas Instruments, and LMV721IDBVR from Texas Instruments offer general purpose amplification with rail-to-rail output in SOT-23-5 packaging. These devices provide higher slew rates (0.7 V/µs to 5.25 V/µs) and extended temperature ranges. All are active products with ROHS3 compliance. The LMV321LILT offers the highest output current capability (70 mA) among general purpose alternatives.

Low-Power Alternatives:

The MCP6271T-E/OT and MCP6L71RT-E/OT from Microchip Technology provide general purpose amplification with supply voltage range extending to 6 V maximum. Both maintain SOT-23-5 packaging and are active products with ROHS3 compliance. The MCP6L71RT-E/OT demonstrates lower supply current (150 µA) and improved input offset voltage (1 mV) compared to the MCP6271T-E/OT variant.

Compliance Consideration:

All recommended substitute parts carry ROHS3 compliance status, addressing the RoHS non-compliant classification of the obsolete MAX4074ADEUK-T. This compliance status is essential for new designs and procurement in regulated markets.

Frequently Asked Questions (FAQ)

Q: Can the LMP2021 series directly replace the MAX4074ADEUK-T without circuit modifications?

A: The LMP2021MF/NOPB, LMP2021MFX/NOPB, and LMP2021MFE/NOPB are pin-compatible substitutes in SOT-23-5 packaging. Both devices operate within the 2.5 V to 5.5 V supply range of the original part. However, the zero-drift architecture and superior performance characteristics (2.6 V/µs slew rate, 0.4 µV input offset) differ from the original specification. Circuit validation is required to confirm performance adequacy for specific applications.

Q: What is the key difference between zero-drift amplifiers (LMP2021 series) and general purpose amplifiers (LMV series)?

A: Zero-drift amplifiers employ chopper-stabilization techniques to achieve extremely low input offset voltage (0.4 µV) and superior long-term stability. General purpose amplifiers prioritize cost and power efficiency. The LMP2021 series consumes higher supply current (1.1 mA) but delivers offset voltage performance approximately 500 times better than the MAX4074ADEUK-T. Selection depends on application sensitivity to offset voltage and power budget constraints.

Q: Are all substitute parts available in the same packaging as the MAX4074ADEUK-T?

A: All listed substitute parts are available in SOT-23-5 surface mount packaging, matching the original MAX4074ADEUK-T package designation. This ensures direct board-level compatibility without PCB layout modifications. The LMV721IDCKR variant uses SC-70-5 packaging and is not recommended for direct substitution without layout redesign.

Q: Which substitute part offers the best supply current efficiency?

A: The MCP6L71RT-E/OT from Microchip Technology operates at 150 µA supply current, representing the lowest power consumption among listed substitutes. The LMV321LILT operates at 130 µA. Both are significantly higher than the original MAX4074ADEUK-T (37 µA), reflecting modern amplifier design trade-offs between performance and power efficiency.

Q: What is the temperature range consideration for substitute selection?

A: The MAX4074ADEUK-T operates from -40°C to 70°C. Most substitute parts extend this range to -40°C to 125°C or -40°C to 105°C, providing broader operational capability. The LMV710M5/NOPB operates to -40°C to 85°C, which covers the original specification. Applications requiring operation above 70°C benefit from extended-range substitutes.

Q: Are there any supply voltage compatibility issues with the substitute parts?

A: The MAX4074ADEUK-T operates from 2.5 V to 5.5 V. All listed substitutes operate from 2.0 V to 2.2 V minimum, providing compatibility with lower supply voltages. The MCP6271T-E/OT and MCP6L71RT-E/OT extend maximum supply voltage to 6 V. Designs operating at exactly 2.5 V minimum should verify substitute part performance at this boundary condition.

Q: What is the significance of RoHS3 compliance for substitute selection?

A: The MAX4074ADEUK-T is RoHS non-compliant, reflecting its obsolete status and older manufacturing standards. All recommended substitutes carry ROHS3 compliance, indicating conformance to current environmental and hazardous substance restrictions. This compliance is mandatory for new designs in regulated markets and ensures long-term supply chain viability.

Q: Which substitute offers the highest output current capability?

A: The LMV321LILT from STMicroelectronics provides 70 mA output current per channel, the highest among listed substitutes. The LMP2021 series delivers 50 mA, while the LMV710M5/NOPB provides 40 mA. Applications requiring high output current should prioritize the LMV321LILT or verify that lower-current alternatives meet load requirements.

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