MAX4281ESA Equivalent & Substitute Parts

Part Overview

The MAX4281ESA is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, designed for rail-to-rail applications in 8-SOIC surface mount packaging. This device is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The MAX4281ESA operates across a 2.5V to 5.5V supply range with a 0.7V/µs slew rate and 2MHz gain bandwidth product, making it suitable for low-speed analog signal conditioning applications.

Key Parameters

Parameter	Value	Unit
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 to 85	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the MAX4281ESA is determined by strict adherence to the following electrical and mechanical parameters:

Primary Compatibility Criteria:

Package type: 8-SOIC (0.154", 3.90mm Width) surface mount
Amplifier configuration: Single general-purpose operational amplifier
Output architecture: Rail-to-rail output capability
Supply voltage range: Minimum 2.5V operation required
Mounting type: Surface mount

Secondary Electrical Parameters:

Slew rate: 0.7V/µs or greater
Gain bandwidth product: 2MHz or greater
Input bias current: 50pA or lower
Input offset voltage: 500µV or lower
Supply current: 320µA or lower
Output current capability: 65mA or greater
Operating temperature range: Must encompass -40°C to 85°C minimum

All identified substitute parts meet the 8-SOIC package requirement and rail-to-rail output specification. Substitutes are grouped by their ability to operate within the MAX4281ESA's supply voltage window while maintaining or exceeding the specified electrical performance metrics.

Parameter Comparison

Parameter	MAX4281ESA	MCP601-E/SN	TLC4501AID	TLC4501AIDR	TLV2471ID	TS1871IDT
Manufacturer	Analog Devices	Microchip	Texas Instruments	Texas Instruments	Texas Instruments	STMicroelectronics
Slew Rate (V/µs)	0.7	2.3	2.5	2.5	1.5	0.6
Gain Bandwidth Product (MHz)	2	2.8	4.7	4.7	2.8	1.8
Input Bias Current (pA)	50	1	1	1	2.5	70000
Input Offset Voltage (µV)	500	700	10	10	250	100
Supply Current (µA)	320	230	1000	1000	600	500
Output Current / Channel (mA)	65	22	50	50	35	80
Supply Voltage Min (V)	2.5	2.7	4	4	2.7	1.8
Supply Voltage Max (V)	5.5	6	6	6	6	6
Operating Temperature (°C)	-40 to 85	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

The TLC4501AID and TLC4501AIDR from Texas Instruments represent the most direct functional equivalents. Both devices maintain the 8-SOIC package format, rail-to-rail output architecture, and single-circuit configuration. The TLC4501AID operates across -40°C to 125°C, extending the temperature range beyond the MAX4281ESA. The TLC4501AIDR variant provides identical electrical specifications in tape-and-reel packaging for automated assembly. Both are classified as Active products, ensuring long-term availability and supply continuity.

Secondary Substitutes (Extended Operating Range):

The MCP601-E/SN from Microchip Technology and TLV2471ID from Texas Instruments provide functional substitution with extended temperature ranges (-40°C to 125°C). The MCP601-E/SN offers improved slew rate (2.3V/µs) and lower supply current (230µA) compared to the MAX4281ESA. The TLV2471ID maintains lower input offset voltage (250µV) and operates across the extended temperature range. Both devices are Active products with ROHS3 compliance.

Alternative Substitute (Marginal Compatibility):

The TS1871IDT from STMicroelectronics meets the 8-SOIC package and rail-to-rail output requirements. However, this device exhibits significantly higher input bias current (70nA versus 50pA) and lower gain bandwidth product (1.8MHz versus 2MHz), making it suitable only for applications where these parameter deviations are acceptable. The TS1871IDT is Active and ROHS3 compliant.

Product Status Consideration:

All identified substitutes are classified as Active products, providing superior long-term procurement reliability compared to the Obsolete MAX4281ESA. Selection should prioritize Active-status devices to ensure sustained component availability and manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can the TLC4501AID directly replace the MAX4281ESA in existing designs?

A: The TLC4501AID is mechanically and functionally compatible, sharing the 8-SOIC package and rail-to-rail output architecture. Electrical parameters are superior or equivalent across all specified metrics. Direct substitution is permissible without circuit modification, provided the application does not depend on the MAX4281ESA's specific slew rate or bandwidth characteristics.

Q: What is the primary difference between TLC4501AID and TLC4501AIDR?

A: Both devices are electrically identical. The TLC4501AID is supplied in tube packaging, while the TLC4501AIDR is supplied in tape-and-reel format. Selection depends on assembly methodology: tube packaging for manual or small-batch assembly; tape-and-reel for automated pick-and-place operations.

Q: Does the MCP601-E/SN require circuit redesign for substitution?

A: The MCP601-E/SN is pin-compatible and functionally equivalent. However, the minimum supply voltage is 2.7V versus 2.5V for the MAX4281ESA. Applications operating at 2.5V supply voltage cannot use the MCP601-E/SN without circuit modification. All other electrical parameters are compatible or superior.

Q: Why is the TS1871IDT listed as a substitute despite higher input bias current?

A: The TS1871IDT meets the primary mechanical and functional requirements (8-SOIC package, rail-to-rail output, single circuit). However, the 70nA input bias current significantly exceeds the MAX4281ESA specification (50pA). This device is suitable only for applications where input bias current is not a critical design parameter.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the MAX4281ESA compliance profile.

Q: What is the temperature range limitation for direct substitution?

A: The MAX4281ESA operates -40°C to 85°C. All identified substitutes extend the upper temperature limit to 125°C, providing enhanced thermal margin. Applications requiring operation above 85°C benefit from this extended range. Applications limited to 85°C maximum are unaffected by this specification difference.

Q: Can the TLC4501CD or TLC4501ID be used as substitutes?

A: Both devices are electrically equivalent to the TLC4501AID. However, both are classified as Last Time Buy, indicating discontinued or end-of-life status. Procurement of these variants is not recommended for new designs. The Active-status TLC4501AID or TLC4501AIDR are preferred alternatives.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message