MAX268AENG Band Pass Filter IC Equivalent & Substitute Parts

Part Overview

The MAX268AENG is a 2nd order band pass filter IC manufactured by Analog Devices Inc./Maxim Integrated, designed for 140kHz center frequency applications. This component is classified as obsolete, which necessitates identification of active equivalent parts to maintain design continuity and ensure long-term component availability for new production runs and field replacements.

Substiute Parts

MAX268AENG

Analog Devices Inc./Maxim IntegratedIn Stock: 1098MAX268AENG Datasheet

Current PartRFQ

MAX268AENG+

Analog Devices Inc./Maxim IntegratedIn Stock: 942MAX268AENG+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX268AENG is determined by strict equivalence across the following critical parameters:

• Filter Topology: Band pass configuration with 2nd order response
• Center Frequency: 140kHz operation point
• Number of Filter Channels: Dual filter configuration
• Supply Voltage Range: 4.74V ~ 12.6V and ±2.37V ~ 6.3V dual supply capability
• Package Format: 24-PDIP through-hole mounting
• Electrical Performance: Identical frequency response and filter characteristics

The MAX268AENG+ qualifies as a direct substitute based on complete alignment with all electrical and mechanical parameters. The primary distinction is product lifecycle status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The MAX268AENG+ is the appropriate selection for new designs and production applications. This part maintains complete electrical and mechanical compatibility with the obsolete MAX268AENG while offering the following advantages:

• Active Product Status: Ensures ongoing availability and manufacturer support
• ROHS3 Compliance: Meets current environmental and regulatory requirements for commercial and industrial applications
• Identical Electrical Specifications: No circuit redesign or re-qualification required for direct substitution

For legacy systems currently using MAX268AENG, the MAX268AENG+ provides pin-for-pin and functional equivalence, enabling seamless replacement without PCB modifications or firmware changes.

Frequently Asked Questions (FAQ)

Q: Can MAX268AENG+ be used as a direct replacement for MAX268AENG in existing designs?

A: Yes. The MAX268AENG+ is electrically and mechanically identical to the MAX268AENG. Both parts feature identical 140kHz band pass filter characteristics, 2nd order response, dual filter configuration, and 24-PDIP package format. No circuit modifications are required.

Q: What is the primary reason to transition from MAX268AENG to MAX268AENG+?

A: The MAX268AENG is classified as obsolete, creating long-term supply risk. The MAX268AENG+ is an active product with confirmed manufacturer support and availability. Additionally, MAX268AENG+ achieves ROHS3 compliance, aligning with current regulatory standards.

Q: Are there any packaging differences between these parts?

A: Both parts use 24-PDIP through-hole packaging with identical 0.300" (7.62mm) pitch. The MAX268AENG+ is supplied in tube packaging, while the original part number does not specify packaging format. Pin configuration and PCB footprint are identical.

Q: Do supply voltage requirements differ between the two parts?

A: No. Both MAX268AENG and MAX268AENG+ operate with identical supply voltage ranges: 4.74V ~ 12.6V single supply or ±2.37V ~ 6.3V dual supply configuration.

Q: Is re-qualification required when substituting MAX268AENG with MAX268AENG+?

A: No re-qualification of electrical performance is required due to complete functional equivalence. However, compliance documentation updates may be necessary to reflect ROHS3 certification status in production records.