MAX4166EPA Equivalent & Substitute Parts

Part Overview

The MAX4166EPA is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, packaged in 8-DIP through-hole configuration. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The MAX4166EPA features rail-to-rail output capability with a 5 MHz gain-bandwidth product, suitable for general-purpose amplification applications requiring low-power operation across 2.7 V to 6.5 V supply ranges.

Key Parameters

Parameter	MAX4166EPA
Amplifier Type	General Purpose
Number of Circuits	1
Output Type	Rail-to-Rail
Slew Rate	2 V/µs
Gain Bandwidth Product	5 MHz
Current - Input Bias	50 nA
Voltage - Input Offset	250 µV
Current - Supply	1.3 mA
Current - Output / Channel	125 mA
Voltage - Supply Span (Min)	2.7 V
Voltage - Supply Span (Max)	6.5 V
Operating Temperature	-40°C ~ 85°C
Package / Case	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the MAX4166EPA is determined by strict compatibility across the following critical parameters:

Mandatory Compatibility Criteria:

Amplifier Type: General Purpose
Number of Circuits: 1
Output Type: Rail-to-Rail
Package / Case: 8-DIP (0.300", 7.62mm)
Mounting Type: Through Hole

Electrical Performance Parameters:

Gain Bandwidth Product: 5 MHz (±1.4 MHz tolerance acceptable)
Slew Rate: ≥2 V/µs
Voltage - Supply Span (Min): ≤2.7 V
Voltage - Supply Span (Max): ≥6.5 V
Operating Temperature: Must support -40°C minimum

Substitute parts are grouped based on their ability to meet or exceed these parameters while maintaining identical pinout and package footprint. All identified substitutes maintain the 8-PDIP package configuration and single-circuit general-purpose amplifier topology.

Parameter Comparison

Parameter	MAX4166EPA	MCP6281-E/P	TLV2460AIP	TLV2460CP	TLV2460IP	TLV2770AIP	TLV2770CP	TLV2770IP
Amplifier Type	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
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
Slew Rate	2 V/µs	2.5 V/µs	1.6 V/µs	1.6 V/µs	1.6 V/µs	10.5 V/µs	10.5 V/µs	10.5 V/µs
Gain Bandwidth Product	5 MHz	5 MHz	6.4 MHz	6.4 MHz	6.4 MHz	5.1 MHz	5.1 MHz	5.1 MHz
Current - Input Bias	50 nA	1 pA	1.3 nA	1.3 nA	1.3 nA	2 pA	2 pA	2 pA
Voltage - Input Offset	250 µV	3 mV	500 µV	500 µV	500 µV	500 µV	500 µV	500 µV
Current - Supply	1.3 mA	450 µA	550 µA	550 µA	550 µA	1 mA	1 mA	1 mA
Current - Output / Channel	125 mA	25 mA	80 mA	80 mA	80 mA	50 mA	50 mA	50 mA
Voltage - Supply Span (Min)	2.7 V	2.2 V	2.7 V	2.7 V	2.7 V	2.5 V	2.5 V	2.5 V
Voltage - Supply Span (Max)	6.5 V	6 V	6 V	6 V	6 V	5.5 V	5.5 V	5.5 V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C	0°C ~ 70°C	-40°C ~ 125°C	-40°C ~ 125°C	0°C ~ 70°C	-40°C ~ 125°C
Package / Case	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Product Status	Obsolete	Active	Last Time Buy	Last Time Buy	Last Time Buy	Last Time Buy	Last Time Buy	Last Time Buy
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

MCP6281-E/P (Microchip Technology)

The MCP6281-E/P is the only substitute with Active product status, providing long-term availability and manufacturing support. This device meets all mandatory compatibility criteria and exceeds electrical performance specifications with improved slew rate (2.5 V/µs) and significantly lower input bias current (1 pA). The MCP6281-E/P operates across 2.2 V to 6 V, providing extended low-voltage capability. ROHS3 compliance and active production status make this the preferred choice for new designs and production continuity. Note: Maximum supply voltage is 6 V, which is 0.5 V below the MAX4166EPA specification.

TLV2460AIP and TLV2460IP (Texas Instruments)

Both TLV2460 variants from Texas Instruments maintain compatibility with the MAX4166EPA across all mandatory parameters. The TLV2460AIP supports the full -40°C to 125°C temperature range, matching extended industrial requirements. The TLV2460IP provides identical electrical performance with identical temperature range. Both devices feature higher gain-bandwidth product (6.4 MHz) and lower input bias current (1.3 nA). Maximum supply voltage is 6 V. ROHS3 compliance is confirmed. Last Time Buy status indicates limited future availability.

TLV2460CP (Texas Instruments)

The TLV2460CP is functionally identical to TLV2460AIP and TLV2460IP but operates within commercial temperature range (0°C to 70°C). This variant is suitable only for applications not requiring extended temperature operation. Last Time Buy status applies.

TLV2770AIP and TLV2770IP (Texas Instruments)

The TLV2770 series offers significantly enhanced slew rate performance (10.5 V/µs) compared to the MAX4166EPA (2 V/µs), making these devices suitable for applications requiring faster transient response. Both variants maintain 5.1 MHz gain-bandwidth product and support -40°C to 125°C operation. The TLV2770AIP and TLV2770IP are electrically interchangeable. Note: Maximum supply voltage is 5.5 V, which is 1 V below the MAX4166EPA specification. ROHS3 compliance is confirmed. Last Time Buy status applies.

TLV2770CP (Texas Instruments)

The TLV2770CP provides identical electrical performance to TLV2770AIP and TLV2770IP but operates within commercial temperature range (0°C to 70°C). This variant is suitable only for applications not requiring extended temperature operation. Last Time Buy status applies.

Frequently Asked Questions (FAQ)

Q: Can the MCP6281-E/P directly replace the MAX4166EPA in all applications?

A: The MCP6281-E/P is pin-compatible and functionally equivalent for most applications. However, the maximum supply voltage is 6 V compared to 6.5 V for the MAX4166EPA. Applications operating at 6.5 V supply must be re-evaluated. All other electrical parameters meet or exceed MAX4166EPA specifications.

Q: What is the difference between TLV2460AIP, TLV2460CP, and TLV2460IP?

A: All three variants are electrically identical with 6.4 MHz gain-bandwidth product and 1.6 V/µs slew rate. The primary difference is operating temperature range: TLV2460AIP and TLV2460IP support -40°C to 125°C (industrial range), while TLV2460CP supports 0°C to 70°C (commercial range). Select based on application temperature requirements.

Q: Why do TLV2770 devices have higher slew rate than the MAX4166EPA?

A: The TLV2770 series is designed with enhanced transient response capability (10.5 V/µs versus 2 V/µs). This parameter is provided in the device specifications and represents a performance enhancement. Applications sensitive to slew rate limitations may benefit from this improvement.

Q: Are all substitute parts RoHS compliant?

A: Yes. All identified substitute parts are ROHS3 compliant. The original MAX4166EPA is RoHS non-compliant. Designs requiring RoHS compliance must transition to one of the substitute parts.

Q: What is the significance of "Last Time Buy" product status?

A: Last Time Buy status indicates the manufacturer has announced end-of-life for the device. Customers may place final orders within a specified window before production ceases. The MCP6281-E/P with Active status is the only substitute offering indefinite availability.

Q: Can I use TLV2770 devices in applications designed for MAX4166EPA?

A: TLV2770 devices are pin-compatible and functionally compatible for most applications. However, verify that your application does not require supply voltages above 5.5 V, as this is the maximum for TLV2770 devices compared to 6.5 V for MAX4166EPA. The enhanced slew rate (10.5 V/µs) will not cause compatibility issues in standard general-purpose amplifier circuits.

Q: Which substitute offers the best long-term availability?

A: The MCP6281-E/P from Microchip Technology is the only substitute with Active product status, ensuring continued manufacturing and availability. All Texas Instruments substitutes carry Last Time Buy status, indicating limited future availability.

Q: Are there any output current limitations I should consider when substituting?

A: Yes. The MAX4166EPA provides 125 mA output current per channel. Substitute parts provide reduced output current: MCP6281-E/P (25 mA), TLV2460 series (80 mA), and TLV2770 series (50 mA). Applications requiring output currents exceeding these limits cannot use these substitutes.

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