MAX4174ADEUK-T Equivalent & Substitute Parts

Part Overview

The MAX4174ADEUK-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 currently classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing design support and procurement.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Package / Case	SC-74A, SOT-753	—
Slew Rate	0.7	V/µs
-3dB Bandwidth	1.7	MHz
Current - Input Bias	50	pA
Voltage - Input Offset	500	µV
Current - Supply	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
Mounting Type	Surface Mount	—
RoHS Status	Non-compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the MAX4174ADEUK-T is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Package / Case: SC-74A, SOT-753 (SOT-23-5 supplier device package)
Amplifier Type: General Purpose
Number of Circuits: 1
Output Type: Rail-to-Rail
Mounting Type: Surface Mount
Operating Temperature Range: Minimum -40°C, Maximum ≥85°C
Voltage Supply Span: Minimum ≤2.5V, Maximum ≥5.5V

Functional Compatibility Parameters:

Slew Rate: ≥0.7 V/µs
Gain Bandwidth Product or -3dB Bandwidth: ≥1.7 MHz
Current - Input Bias: ≤50 pA
Voltage - Input Offset: ≤500 µV
Current - Supply: ≤330 µA
Current - Output / Channel: ≥65 mA

Substitute parts must satisfy all critical matching parameters and maintain functional compatibility within the specified electrical ranges. Parts are grouped by manufacturer and product status (active vs. obsolete).

Parameter Comparison

Part Number	Manufacturer	Product Status	Slew Rate (V/µs)	GBW / BW (MHz)	Input Bias (pA)	Input Offset (µV)	Supply Current (µA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	RoHS Status
MAX4174ADEUK-T	Analog Devices / Maxim	Obsolete	0.7	1.7	50	500	330	65	2.5	5.5	-40 to 85	Non-compliant
AZV831KTR-G1	Diodes Incorporated	Active	0.45	1	1	500	70	185	1.6	5.5	-40 to 85	ROHS3 Compliant
MCP601RT-I/OT	Microchip Technology	Active	2.3	2.8	1	700	230	22	2.7	6	-40 to 85	ROHS3 Compliant
MCP601T-E/OT	Microchip Technology	Active	2.3	2.8	1	700	230	22	2.7	6	-40 to 125	ROHS3 Compliant
MCP601T-I/OT	Microchip Technology	Active	2.3	2.8	1	700	230	22	2.7	6	-40 to 85	ROHS3 Compliant
MCP6271T-E/OT	Microchip Technology	Active	0.9	2	1	3000	170	25	2	6	-40 to 125	ROHS3 Compliant
MCP6286T-E/OT	Microchip Technology	Active	2	3.5	1	1500	540	Not specified	2.2	5.5	-40 to 125	ROHS3 Compliant
MCP6471T-E/OT	Microchip Technology	Active	1.1	2	1	1500	100	Not specified	2	5.5	-40 to 125	ROHS3 Compliant
MCP6L1T-E/OT	Microchip Technology	Active	2.3	2.8	1	1000	200	Not specified	2.7	6	-40 to 125	ROHS3 Compliant
MCP6L71T-E/OT	Microchip Technology	Active	0.9	2	1	1000	150	Not specified	2	6	-40 to 125	ROHS3 Compliant
OPA313IDBVR	Texas Instruments	Active	0.5	1	0.2	500	50	15	1.8	5.5	-40 to 125	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: AZV831KTR-G1

The AZV831KTR-G1 from Diodes Incorporated is the manufacturer-recommended primary substitute. This part maintains identical package specifications (SOT-23-5), operating temperature range (-40°C to 85°C), and supply voltage span (1.6V to 5.5V). The device achieves ROHS3 compliance, addressing the non-compliance status of the obsolete MAX4174ADEUK-T. While slew rate and gain bandwidth product are lower than the original part, the AZV831KTR-G1 satisfies functional compatibility requirements for general-purpose amplification applications.

Secondary Recommendations: Microchip MCP601 Series

The MCP601RT-I/OT, MCP601T-E/OT, and MCP601T-I/OT variants from Microchip Technology provide active alternatives with enhanced performance characteristics. These parts feature higher slew rate (2.3 V/µs) and gain bandwidth product (2.8 MHz), supporting applications requiring improved frequency response. The MCP601T-E/OT variant extends operating temperature to 125°C, providing broader thermal coverage. All MCP601 variants are ROHS3 compliant and maintain SOT-23-5 packaging.

Alternative Options: Microchip MCP6L Series

The MCP6L1T-E/OT and MCP6L71T-E/OT represent low-power alternatives with reduced supply current consumption (200 µA and 150 µA respectively). These parts maintain rail-to-rail output capability and SOT-23-5 packaging while offering extended operating temperature ranges to 125°C. Selection of MCP6L variants is appropriate for power-constrained applications.

Low-Power Alternative: Texas Instruments OPA313IDBVR

The OPA313IDBVR from Texas Instruments provides the lowest supply current (50 µA) and input bias current (0.2 pA) among available substitutes. This part is suitable for ultra-low-power applications and maintains SOT-23-5 packaging with extended temperature range (-40°C to 125°C). ROHS3 compliance is achieved. Output current capability (15 mA) is lower than the original part and must be verified for application requirements.

Selection Criteria:

For direct replacement with compliance upgrade: AZV831KTR-G1
For enhanced performance and thermal range: MCP601T-E/OT
For power-constrained designs: MCP6L71T-E/OT
For ultra-low-power applications: OPA313IDBVR

All recommended substitutes maintain critical package compatibility (SOT-23-5), single-circuit general-purpose amplifier topology, and rail-to-rail output configuration. Verify application-specific requirements for slew rate, bandwidth, output current, and supply voltage before final selection.

Frequently Asked Questions (FAQ)

Q1: Why is the MAX4174ADEUK-T obsolete, and what does this mean for my design?

The MAX4174ADEUK-T is classified as obsolete by the manufacturer, indicating that production has been discontinued and future availability cannot be guaranteed. Existing inventory may be available from authorized distributors, but long-term procurement is not assured. Designs currently using this part should transition to active alternatives to ensure supply chain continuity and compliance with current regulatory standards.

Q2: What are the critical parameters that determine if a substitute part is compatible?

Compatibility is determined by: (1) identical package type (SOT-23-5 / SC-74A), (2) single-circuit general-purpose amplifier topology, (3) rail-to-rail output capability, (4) surface mount mounting type, (5) operating temperature range covering at least -40°C to 85°C, and (6) supply voltage span accommodating 2.5V minimum to 5.5V maximum. All substitute parts listed meet these critical requirements.

Q3: Can I use a substitute part with lower slew rate or bandwidth than the MAX4174ADEUK-T?

Substitution with lower slew rate or bandwidth is application-dependent. The MAX4174ADEUK-T specifies 0.7 V/µs slew rate and 1.7 MHz bandwidth. Parts such as AZV831KTR-G1 (0.45 V/µs, 1 MHz) and OPA313IDBVR (0.5 V/µs, 1 MHz) have reduced performance. These are suitable for low-frequency signal conditioning and general-purpose amplification but may not support high-speed transient applications. Verify application bandwidth and slew rate requirements before selection.

Q4: What is the difference between the MCP601 variants (RT-I/OT, T-E/OT, T-I/OT)?

The MCP601 variants differ in temperature rating and packaging designation. MCP601RT-I/OT and MCP601T-I/OT both operate from -40°C to 85°C, matching the original MAX4174ADEUK-T temperature range. MCP601T-E/OT extends the upper temperature limit to 125°C, providing enhanced thermal performance for high-temperature environments. All three variants share identical electrical specifications (2.3 V/µs slew rate, 2.8 MHz bandwidth, 230 µA supply current).

Q5: Are all substitute parts RoHS compliant?

All listed substitute parts are ROHS3 compliant, addressing the non-compliance status of the obsolete MAX4174ADEUK-T. ROHS3 compliance ensures restriction of hazardous substances (lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers) in accordance with current regulatory requirements. This compliance is mandatory for many applications and markets.

Q6: Which substitute offers the best power efficiency?

The OPA313IDBVR provides the lowest supply current at 50 µA, followed by the MCP6471T-E/OT at 100 µA and MCP6L71T-E/OT at 150 µA. For battery-powered or energy-constrained applications, these low-power alternatives are preferred. However, verify that output current capability (OPA313IDBVR: 15 mA) meets load requirements, as this parameter is reduced compared to the original part (65 mA).

Q7: Can I use the MCP6286T-E/OT as a substitute?

The MCP6286T-E/OT is listed as a substitute option and provides the highest gain bandwidth product (3.5 MHz) among available alternatives. However, this part exhibits elevated supply current (540 µA) and input offset voltage (1.5 mV), which may not be suitable for all applications. Selection is appropriate for high-frequency applications where bandwidth performance is critical and power consumption is not a constraint.

Q8: What is the moisture sensitivity level, and does it affect handling?

All listed parts, including the original MAX4174ADEUK-T and all substitutes, are classified as Moisture Sensitivity Level 1 (MSL 1 - Unlimited). This classification indicates that the components have unlimited shelf life and do not require special moisture-control handling procedures during storage or assembly. Standard ESD precautions remain applicable.

Q9: Are there any supply voltage compatibility issues between the original part and substitutes?

The MAX4174ADEUK-T operates from 2.5V to 5.5V. Most substitutes maintain this range or extend it. AZV831KTR-G1 operates from 1.6V to 5.5V (lower minimum). MCP601 variants operate from 2.7V to 6V (higher minimum and maximum). MCP6271T-E/OT and MCP6L71T-E/OT operate from 2V to 6V. Verify that the selected substitute's supply voltage range encompasses your application's power supply specifications.

Q10: Which substitute should I select for a new design?

For new designs, the MCP601T-E/OT is recommended as the primary choice. This part offers: (1) active product status with long-term availability, (2) ROHS3 compliance, (3) extended operating temperature range (-40°C to 125°C), (4) enhanced performance (2.3 V/µs slew rate, 2.8 MHz bandwidth), (5) established design support and documentation from Microchip Technology, and (6) compatibility with the original MAX4174ADEUK-T package and pinout. For power-constrained designs, consider MCP6L71T-E/OT. For ultra-low-power applications, evaluate OPA313IDBVR.

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