MAX407EPA Equivalent & Substitute Parts

Part Overview

The MAX407EPA is a general-purpose operational amplifier featuring dual circuits with rail-to-rail output capability in an 8-DIP through-hole package. Manufactured by Analog Devices Inc./Maxim Integrated, this device operates across a 2.5V to 10V supply range with low input bias current and is designed for precision analog signal conditioning applications.

The MAX407EPA is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support legacy system maintenance where this component is specified in active production or field-deployed equipment.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Slew Rate	0.005	V/µs
Gain Bandwidth Product	8	kHz
Current - Input Bias	0.1	pA
Voltage - Input Offset	1	mV
Current - Supply (per Channel)	1	µA
Current - Output / Channel	600	µA
Voltage - Supply Span (Min)	2.5	V
Voltage - Supply Span (Max)	10	V
Operating Temperature	-40 to 85	°C
Package / Case	8-DIP (0.300", 7.62mm)	—
Mounting Type	Through Hole	—

Substitute Part Grouping Explanation

Substitution eligibility for the MAX407EPA is determined by strict alignment across the following critical parameters:

Mandatory Matching Criteria:

Amplifier Type: General Purpose
Number of Circuits: 2
Output Type: Rail-to-Rail
Package / Case: 8-DIP (0.300", 7.62mm)
Mounting Type: Through Hole
Operating Temperature Range: -40°C to 85°C minimum

Allowable Parameter Variance: Substitute parts may exhibit improvements or variations in the following parameters without compromising functional compatibility:

Slew Rate (higher values acceptable)
Gain Bandwidth Product (higher values acceptable)
Current - Input Bias (lower values acceptable)
Voltage - Input Offset (within ±0.5 mV acceptable)
Current - Supply (higher values acceptable within thermal constraints)
Current - Output / Channel (higher values acceptable)
Voltage - Supply Span (wider ranges acceptable if minimum ≥2.5V and maximum ≥10V)

Two substitute parts meet these criteria and are listed below.

Parameter Comparison

Parameter	MAX407EPA	MAX407EPA+	LMC6442IN/NOPB
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	National Semiconductor
Product Status	Obsolete	Active	Active
Amplifier Type	General Purpose	General Purpose	General Purpose
Number of Circuits	2	2	2
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	0.005	0.005	0.0041
Gain Bandwidth Product (kHz)	8	8	10.5
Current - Input Bias (pA)	0.1	0.1	0.005
Voltage - Input Offset (mV)	1	1	1.5
Current - Supply per Channel (µA)	1	1	1.9
Current - Output / Channel (µA)	600	600	2100
Voltage - Supply Span Min (V)	2.5	2.5	1.8
Voltage - Supply Span Max (V)	10	10	11
Operating Temperature (°C)	-40 to 85	-40 to 85	-40 to 85
Package / Case	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
RoHS Status	RoHS non-compliant	ROHS3 Compliant	Not specified

Engineering Selection Recommendations

MAX407EPA+ (Direct Manufacturer Upgrade)

The MAX407EPA+ is the direct successor to the MAX407EPA from the same manufacturer, Analog Devices Inc./Maxim Integrated. It maintains identical electrical specifications across all critical parameters while offering active product status and ROHS3 compliance. The MAX407EPA+ is packaged in tube format and represents the primary substitution path for obsolete MAX407EPA inventory. This part is recommended for new designs and legacy system updates where regulatory compliance is required.

LMC6442IN/NOPB (Cross-Manufacturer Alternative)

The LMC6442IN/NOPB, manufactured by National Semiconductor, qualifies as a functional substitute based on matching package, circuit count, output type, and operating temperature range. This device exhibits superior input bias current performance (0.005 pA vs. 0.1 pA) and higher output current capability (2.1 mA vs. 600 µA). The LMC6442IN/NOPB operates across a wider supply voltage range (1.8V to 11V) and delivers higher gain bandwidth product (10.5 kHz vs. 8 kHz). These enhancements make the LMC6442IN/NOPB suitable for applications requiring lower input bias current or higher output drive capability. The device is active and available in bulk packaging.

Selection Basis:

Both substitute parts satisfy the mandatory matching criteria for package type, circuit configuration, output topology, and temperature range. Selection between MAX407EPA+ and LMC6442IN/NOPB depends on supply chain availability, regulatory requirements (RoHS compliance), and application-specific performance needs. The MAX407EPA+ maintains exact electrical equivalence, while the LMC6442IN/NOPB offers enhanced performance characteristics within compatible operating parameters.

Frequently Asked Questions (FAQ)

Q: Can MAX407EPA+ be used as a direct replacement for MAX407EPA?

A: Yes. The MAX407EPA+ is electrically and mechanically identical to the MAX407EPA across all specified parameters. Both devices feature identical slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, output current, and supply voltage range. The primary differences are product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant). Pin configuration and package dimensions are identical.

Q: What are the key differences between MAX407EPA and LMC6442IN/NOPB?

A: Both devices share the same package type (8-DIP), circuit count (2), output type (rail-to-rail), and operating temperature range (-40°C to 85°C). The LMC6442IN/NOPB exhibits lower input bias current (0.005 pA vs. 0.1 pA), higher output current per channel (2.1 mA vs. 600 µA), higher gain bandwidth product (10.5 kHz vs. 8 kHz), and operates across a wider supply voltage range (1.8V to 11V vs. 2.5V to 10V). Input offset voltage is slightly higher (1.5 mV vs. 1 mV). These differences represent performance enhancements rather than incompatibilities.

Q: Are there any packaging differences between the substitute parts?

A: All three parts use identical 8-DIP through-hole packages with 0.300" (7.62mm) body width. Packaging format differs only in supplier presentation: MAX407EPA is supplied in standard packaging, MAX407EPA+ in tube format, and LMC6442IN/NOPB in bulk format. These differences do not affect electrical performance or mechanical compatibility in circuit board applications.

Q: Which substitute part should be selected for new designs?

A: Selection depends on specific application requirements. For designs requiring exact electrical equivalence and regulatory compliance, MAX407EPA+ is recommended. For applications benefiting from lower input bias current or higher output drive capability, LMC6442IN/NOPB is appropriate. Both parts are active products with established supply chains.

Q: Is the LMC6442IN/NOPB compatible with existing MAX407EPA circuit designs?

A: Yes, within the specified parameter ranges. The LMC6442IN/NOPB maintains identical pin configuration, package footprint, and operating temperature range. The device operates across a wider supply voltage range and delivers superior input bias current performance. Applications designed for MAX407EPA operation will function with LMC6442IN/NOPB without circuit modification, provided the application does not depend on the specific slew rate or gain bandwidth product values of the original device.

Q: What is the significance of RoHS compliance status?

A: MAX407EPA is RoHS non-compliant, while MAX407EPA+ is ROHS3 compliant. RoHS compliance indicates the device meets restrictions on hazardous substances in electrical and electronic equipment. For applications subject to regulatory requirements or customer specifications mandating RoHS compliance, MAX407EPA+ is the appropriate selection. The LMC6442IN/NOPB RoHS status is not specified in available documentation.

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