MAX271ENG+ Equivalent & Substitute Parts Reference

Part Overview

The MAX271ENG+ is a continuous low pass filter IC manufactured by Analog Devices Inc./Maxim Integrated. This device integrates a 2nd order low pass filter with a 25kHz cutoff frequency in a 24-pin DIP package, designed for analog signal conditioning applications requiring programmable filter characteristics. The product is classified as obsolete, making identification of equivalent and substitute parts essential for system redesign, legacy system maintenance, and component procurement planning.

Substiute Parts

MAX271ENG+

Analog Devices Inc./Maxim IntegratedIn Stock: 1214MAX271ENG+ Datasheet

Current PartRFQ

MAX271ENG+

Analog Devices Inc./Maxim IntegratedIn Stock: 1214MAX271ENG+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MAX271ENG+ is determined by the following critical parameters:

• Filter Topology: Continuous low pass filter architecture
• Filter Order: 2nd order response
• Cutoff Frequency: 25kHz nominal
• Number of Independent Filters: 2 channels
• Supply Voltage Range: 4.74V ~ 16V single supply or ±2.37V ~ 8V dual supply
• Package Type: 24-pin DIP form factor (0.300" spacing, 7.62mm)
• Mounting Technology: Through-hole PCB mounting

Alternative parts must match all electrical specifications and maintain the 24-DIP package footprint to ensure direct PCB compatibility without layout modifications.

Parameter Comparison

Engineering Selection Recommendations

The MAX271ENG+ is classified as an obsolete product. Component selection for replacement applications must prioritize:

1. Electrical Parameter Matching: Substitute parts must provide identical filter specifications (2nd order, 25kHz cutoff, dual-channel configuration) and supply voltage compatibility (4.74V ~ 16V or ±2.37V ~ 8V).

2. Package Compatibility: The 24-DIP through-hole package is mandatory for direct PCB substitution without layout redesign. Pin-to-pin compatibility ensures functional equivalence.

3. Compliance Requirements: ROHS3 compliance and REACH unaffected status are maintained across equivalent parts, supporting regulatory requirements for new designs and legacy system updates.

4. Availability Considerations: Obsolete product status necessitates early procurement planning and inventory assessment. Current stock availability should be verified before design finalization.

Frequently Asked Questions (FAQ)

Q: What makes a part a valid substitute for the MAX271ENG+?

A: A valid substitute must match all electrical parameters: 2nd order continuous low pass filter topology, 25kHz cutoff frequency, dual-channel configuration, and supply voltage range (4.74V ~ 16V or ±2.37V ~ 8V). The part must also be packaged in a 24-pin DIP form factor with through-hole mounting to ensure PCB compatibility.

Q: Can I use a different package type as a substitute?

A: No. The 24-DIP package is a critical specification for direct PCB substitution. Alternative package types (such as surface-mount variants) would require PCB layout modifications and are not considered direct equivalents.

Q: Why is the MAX271ENG+ classified as obsolete?

A: Obsolete status indicates the product is no longer manufactured by Analog Devices Inc./Maxim Integrated. This classification requires component procurement planning and consideration of alternative solutions for new designs.

Q: Are there compliance differences between the MAX271ENG+ and its equivalents?

A: No. All equivalent parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for both legacy system maintenance and new product development.

Q: What supply voltage options does the MAX271ENG+ support?

A: The device supports dual supply configurations: 4.74V ~ 16V for single supply operation or ±2.37V ~ 8V for split-rail operation. Circuit design must accommodate the selected supply configuration.