MAX4281ESA-T Equivalent & Substitute Parts

Part Overview

The MAX4281ESA-T is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, housed in an 8-SOIC surface mount package. This device is part of the GainAmp™ series and is classified as obsolete. The MAX4281ESA-T features rail-to-rail output capability with a 1-circuit configuration, making it suitable for general-purpose amplification applications requiring low-power operation across a 2.5V to 5.5V supply range.

Due to its obsolete product status, locating replacement units from original inventory becomes increasingly difficult. Identifying equivalent and substitute parts ensures design continuity and maintains supply chain reliability for applications currently utilizing this component.

Key Parameters

Parameter	MAX4281ESA-T
Amplifier Type	General Purpose
Number of Circuits	1
Output Type	Rail-to-Rail
Slew Rate	0.7 V/µs
Gain Bandwidth Product	2 MHz
Current - Input Bias	50 pA
Voltage - Input Offset	500 µV
Current - Supply	320 µA
Current - Output / Channel	65 mA
Voltage - Supply Span (Min)	2.5 V
Voltage - Supply Span (Max)	5.5 V
Operating Temperature	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MAX4281ESA-T is determined by strict adherence to the following critical parameters:

Package Compatibility: All substitute parts must use the 8-SOIC (0.154", 3.90mm Width) surface mount package to ensure mechanical and electrical compatibility with existing PCB layouts.

Functional Equivalence: Substitute parts must be general-purpose operational amplifiers with single-circuit (1 circuit) configuration and rail-to-rail output capability.

Electrical Operating Range: The substitute part's supply voltage range must encompass or exceed the original 2.5V to 5.5V specification. Parts with minimum supply voltages of 2.7V or lower and maximum supply voltages of 6V or higher satisfy this requirement.

Performance Characteristics: Substitute parts are grouped based on whether their slew rate, gain bandwidth product, input bias current, and input offset voltage meet or exceed the original specifications. Parts with superior performance characteristics (higher slew rate, higher gain bandwidth product, lower input bias current, lower input offset voltage) are acceptable substitutes.

Environmental and Compliance Requirements: All substitute parts must maintain ROHS3 compliance and MSL 1 rating to ensure compatibility with modern manufacturing processes and long-term reliability.

The substitute parts identified fall into two primary groups: Texas Instruments TLC4501 series variants (superior performance) and Texas Instruments TLV2471 series variants (comparable performance with automotive qualification available).

Parameter Comparison

Parameter	MAX4281ESA-T	TLC4501ACD	TLC4501AID	TLC4501AIDR	TLC4501CD	TLC4501ID	TLC4501IDR	TLV2471AQDRG4Q1	TLV2471IDR	TS1871IDT
Manufacturer	Analog Devices Inc./Maxim Integrated	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	STMicroelectronics
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	1	1	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	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	0.7	2.5	2.5	2.5	2.5	2.5	2.5	1.5	1.5	0.6
Gain Bandwidth Product (MHz)	2	4.7	4.7	4.7	4.7	4.7	4.7	2.8	2.8	1.8
Current - Input Bias (pA)	50	1	1	1	1	1	1	2.5	2.5	70 nA
Voltage - Input Offset (µV)	500	10	10	10	10	10	10	250	250	100
Current - Supply (µA)	320	1000	1000	1000	1000	1000	1000	600	600	500
Current - Output / Channel (mA)	65	50	50	50	50	50	50	35	35	80
Voltage - Supply Span (Min)	2.5 V	4 V	4 V	4 V	4 V	4 V	4 V	2.7 V	2.7 V	1.8 V
Voltage - Supply Span (Max)	5.5 V	6 V	6 V	6 V	6 V	6 V	6 V	6 V	6 V	6 V
Operating Temperature	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 125°C	-40°C ~ 125°C	0°C ~ 70°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Last Time Buy	Active	Active	Last Time Buy	Last Time Buy	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Substitutes - Texas Instruments TLC4501 Series (Active Status):

The TLC4501AID, TLC4501AIDR, and TLC4501IDR represent the preferred substitutes for the MAX4281ESA-T. These parts maintain active product status, ensuring long-term availability and manufacturing support. All three variants feature identical electrical specifications with superior performance characteristics: 2.5V/µs slew rate (3.6× improvement), 4.7 MHz gain bandwidth product (2.35× improvement), and significantly reduced input bias current (1 pA versus 50 pA). The TLC4501AIDR and TLC4501IDR support the full industrial temperature range (-40°C to 125°C), extending beyond the original part's 85°C maximum. All TLC4501 variants are ROHS3 compliant with MSL 1 rating.

Secondary Substitutes - Texas Instruments TLC4501 Series (Last Time Buy Status):

The TLC4501ACD and TLC4501CD are available as secondary options with identical electrical specifications to the active variants. These parts carry Last Time Buy status, indicating limited remaining inventory. The TLC4501ACD supports the full industrial temperature range (-40°C to 125°C), while the TLC4501CD operates within 0°C to 70°C. Selection of these variants should account for their limited availability window.

Tertiary Substitutes - Texas Instruments TLV2471 Series:

The TLV2471AQDRG4Q1 and TLV2471IDR provide alternative substitution paths with comparable performance. These parts feature 1.5V/µs slew rate and 2.8 MHz gain bandwidth product, representing moderate performance improvements over the original MAX4281ESA-T. The TLV2471AQDRG4Q1 includes automotive-grade qualification (AEC-Q100) and is suitable for applications requiring automotive reliability standards. Both variants support -40°C to 125°C operating temperature and maintain ROHS3 compliance with MSL 1 rating. The minimum supply voltage of 2.7V accommodates the original 2.5V specification with minimal margin.

Alternative Substitute - STMicroelectronics TS1871IDT:

The TS1871IDT from STMicroelectronics offers an alternative with extended supply voltage range (1.8V to 6V), providing greater flexibility for low-voltage applications. This part features 0.6V/µs slew rate and 1.8 MHz gain bandwidth product, representing performance characteristics closest to the original MAX4281ESA-T. The TS1871IDT supports -40°C to 125°C operating temperature and maintains ROHS3 compliance with MSL 1 rating. This substitute is suitable for applications where performance parity with the original part is prioritized over performance enhancement.

Recommendation Priority:

For new designs and immediate replacement requirements, select TLC4501AIDR or TLC4501IDR (active status, superior performance, full temperature range). For applications requiring automotive qualification, select TLV2471AQDRG4Q1. For applications requiring extended low-voltage operation, select TS1871IDT.

Frequently Asked Questions (FAQ)

Q: Can I directly replace MAX4281ESA-T with TLC4501AIDR without PCB modifications?

A: Yes. Both parts use identical 8-SOIC (0.154", 3.90mm Width) surface mount packages with the same pinout configuration. No PCB layout modifications are required. The TLC4501AIDR is a direct mechanical and electrical substitute.

Q: What is the significance of "Last Time Buy" status for TLC4501ACD and TLC4501CD?

A: Last Time Buy status indicates that the manufacturer has announced end-of-life for these parts. Existing inventory is available for purchase, but no new production will occur after the specified cutoff date. For long-term supply chain planning, active-status alternatives (TLC4501AID, TLC4501AIDR, TLC4501IDR) are recommended.

Q: The TLC4501 series requires a minimum 4V supply, but my application uses 2.5V. What are my options?

A: The TLC4501 series minimum supply voltage of 4V exceeds your 2.5V requirement. Select either TLV2471IDR (2.7V minimum) or TS1871IDT (1.8V minimum). The TS1871IDT provides the greatest margin for 2.5V operation. Verify that your actual supply voltage remains above the selected part's minimum specification under all operating conditions.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts (TLC4501 series, TLV2471 series, and TS1871IDT) maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with modern manufacturing processes and environmental regulations.

Q: What is the difference between TLC4501AIDR and TLC4501IDR?

A: Both parts feature identical electrical specifications and support -40°C to 125°C operating temperature. The primary difference is packaging: TLC4501AIDR is supplied in Tape & Reel format, while TLC4501IDR is also supplied in Tape & Reel format. Consult supplier documentation for specific packaging and quantity requirements.

Q: Can I use TLV2471AQDRG4Q1 in non-automotive applications?

A: Yes. The TLV2471AQDRG4Q1 is automotive-qualified but suitable for any application. Automotive qualification represents an additional quality assurance level and does not restrict use in non-automotive designs. This part is a valid substitute for general-purpose amplifier applications.

Q: How do I verify that a substitute part will function correctly in my existing circuit?

A: Verify the following parameters match or exceed your original design requirements: (1) supply voltage range encompasses your operating voltage, (2) output current capability meets your load requirements, (3) operating temperature range covers your application environment, (4) package type matches your PCB layout. All identified substitutes satisfy these criteria for the MAX4281ESA-T.

Q: What is the inventory status for each substitute part?

A: Current inventory levels are: TLC4501AID (2049 pcs), TLC4501IDR (1432 pcs), TLC4501AIDR (1350 pcs), TLC4501ID (1245 pcs), TLC4501CD (840 pcs), TLC4501ACD (1155 pcs), TLV2471IDR (959 pcs), TLV2471AQDRG4Q1 (674 pcs), TS1871IDT (10250 pcs). Inventory levels are subject to change; verify current availability with your supplier.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message