MAX291CSA Equivalent & Substitute Parts

Part Overview

The MAX291CSA is a Butterworth, Low Pass Switched Capacitor Filter IC manufactured by Analog Devices Inc./Maxim Integrated. This 8th order filter operates at a 25kHz cutoff frequency and is housed in an 8-SOIC surface mount package. The MAX291CSA is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations where this component is specified.

Substiute Parts

MAX291CSA

Analog Devices Inc./Maxim IntegratedIn Stock: 17041MAX291CSA Datasheet

Current PartRFQ

MAX291CSA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1716MAX291CSA+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX291CSA is determined by strict equivalence across the following electrical and mechanical parameters:

• Filter topology and order (Butterworth, 8th order)
• Cutoff frequency specification (25kHz)
• Supply voltage range compatibility (4.75V ~ 11V, ±2.375V ~ 5.5V)
• Package type and pin configuration (8-SOIC)
• Single filter channel configuration

The MAX291CSA+ qualifies as a direct substitute based on identical electrical specifications and package geometry. The primary distinction between these parts is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The MAX291CSA+ is the direct functional equivalent of the MAX291CSA. Both parts share identical electrical characteristics, filter specifications, and package geometry. Selection between these parts should be based on the following criteria:

For legacy system maintenance and repair applications where the original MAX291CSA is specified, the MAX291CSA+ provides pin-for-pin compatibility with improved product status and regulatory compliance. The MAX291CSA+ is currently in active production status, whereas the MAX291CSA is obsolete.

For new designs, the MAX291CSA+ is the appropriate selection due to its active product status and ROHS3 compliance certification. The MAX291CSA should not be selected for new applications.

Frequently Asked Questions (FAQ)

Q: Can the MAX291CSA+ be used as a direct replacement for the MAX291CSA?

A: Yes. The MAX291CSA+ is electrically and mechanically identical to the MAX291CSA. Both parts feature the same 8th order Butterworth low pass filter topology, 25kHz cutoff frequency, supply voltage range, and 8-SOIC package configuration. Pin-for-pin substitution is valid.

Q: What is the primary difference between the MAX291CSA and MAX291CSA+?

A: The MAX291CSA+ is the active production variant with ROHS3 compliance certification. The MAX291CSA is classified as obsolete. Both parts are functionally equivalent.

Q: Are there any package or pinout differences between these parts?

A: No. Both the MAX291CSA and MAX291CSA+ use the 8-SOIC package with identical pin configuration and mechanical dimensions (0.154" width, 3.90mm).

Q: What supply voltage range is supported by these filter ICs?

A: Both parts support dual supply configurations: 4.75V to 11V single supply, or ±2.375V to ±5.5V dual supply operation.

Q: Is the MAX291CSA+ suitable for new product designs?

A: Yes. The MAX291CSA+ is in active production status and carries ROHS3 compliance certification, making it appropriate for new designs. The obsolete MAX291CSA should not be selected for new applications.