MAX4238ASA-T Equivalent & Substitute Parts

Part Overview

The MAX4238ASA-T is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, designed for single-ended, rail-to-rail applications in 8-SOIC surface mount packaging. This device is classified as obsolete, which necessitates identification of active equivalent parts to ensure design continuity and procurement availability. The MAX4238ASA-T delivers 1 MHz gain-bandwidth product with low input offset voltage (0.1 µV) and minimal input bias current (1 pA), suitable for precision analog signal conditioning applications across industrial and consumer electronics.

Substiute Parts

MAX4238ASA-T

Analog Devices Inc./Maxim IntegratedIn Stock: 915MAX4238ASA-T Datasheet

Current PartRFQ

MAX4238ASA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 24746MAX4238ASA+T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX4238ASA-T is determined by electrical and mechanical parameter equivalence within the general-purpose operational amplifier category. The critical parameters governing substitution are:

Electrical Equivalence Criteria:

• Amplifier Type: General Purpose
• Number of Circuits: 1
• Output Type: Single Ended, Rail-to-Rail
• Slew Rate: 0.35 V/µs
• Gain Bandwidth Product: 1 MHz
• Input Bias Current: 1 pA
• Input Offset Voltage: 0.1 µV
• Supply Current: 600 µA
• Output Current per Channel: 40 mA
• Supply Voltage Range: 2.7 V to 5.5 V
• Operating Temperature: -40°C to 125°C

Mechanical Equivalence Criteria:

• Package Type: 8-SOIC surface mount
• Physical Dimensions: 0.154" width (3.90mm)
• Supplier Device Package: 8-SOIC

Compliance Equivalence Criteria:

• RoHS3 Compliance
• Moisture Sensitivity Level: 1 (Unlimited)
• REACH Status: REACH Unaffected

The MAX4238ASA+T meets all electrical, mechanical, and compliance requirements for direct substitution. The primary distinction is product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. standard packaging).

Parameter Comparison

Engineering Selection Recommendations

The MAX4238ASA+T is the direct functional equivalent of the MAX4238ASA-T. Selection of the substitute part is based on the following engineering factors:

Product Status Consideration: The MAX4238ASA-T is classified as obsolete, indicating discontinued manufacturing and limited procurement availability. The MAX4238ASA+T maintains active product status with Analog Devices Inc./Maxim Integrated, ensuring long-term supply chain reliability and technical support continuity.

Electrical Compatibility: All electrical parameters are identical between the main part and substitute, including gain-bandwidth product, slew rate, input offset voltage, input bias current, supply current, output current capability, and operating temperature range. No circuit redesign or performance degradation is introduced through substitution.

Mechanical Compatibility: Both parts utilize identical 8-SOIC surface mount packaging with matching physical dimensions (0.154" width, 3.90mm). PCB layout, footprint, and assembly processes require no modification.

Compliance and Certification: Both parts maintain ROHS3 compliance, identical moisture sensitivity level (MSL 1), and REACH unaffected status. No regulatory or environmental compliance issues arise from substitution.

Packaging Format Difference: The primary distinction is packaging format. The MAX4238ASA+T is supplied in Tape & Reel (TR) format, which is standard for high-volume surface mount assembly operations. If non-TR packaging is required, this must be addressed through supplier consultation or alternative sourcing channels.

Frequently Asked Questions (FAQ)

Q: Can MAX4238ASA+T be used as a direct replacement for MAX4238ASA-T in existing designs?

A: Yes. The MAX4238ASA+T is electrically and mechanically identical to the MAX4238ASA-T. All electrical parameters, package dimensions, and pin configurations match exactly. No circuit modifications are required.

Q: What is the difference between MAX4238ASA-T and MAX4238ASA+T?

A: The primary differences are product status and packaging format. MAX4238ASA-T is obsolete with standard packaging, while MAX4238ASA+T is active with Tape & Reel (TR) packaging. All electrical and mechanical specifications are identical.

Q: Why is the MAX4238ASA-T listed as obsolete?

A: Obsolete status indicates the part has been discontinued by the manufacturer. The MAX4238ASA+T represents the active equivalent, ensuring continued availability and manufacturer support.

Q: Is Tape & Reel packaging compatible with standard PCB assembly equipment?

A: Yes. Tape & Reel (TR) packaging is the standard format for automated surface mount assembly. It is compatible with all modern pick-and-place equipment and reflow soldering processes.

Q: Are there any performance differences between the two parts?

A: No. Both parts deliver identical electrical performance across all specified parameters: 1 MHz gain-bandwidth product, 0.35 V/µs slew rate, 0.1 µV input offset voltage, 1 pA input bias current, and 40 mA output current capability.

Q: What is the inventory status of these parts?

A: MAX4238ASA-T has 876 pieces in stock (obsolete status). MAX4238ASA+T has 24,692 pieces in stock (active status), providing significantly greater availability for new designs and production requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both MAX4238ASA-T and MAX4238ASA+T are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, meeting current environmental and regulatory requirements.

Q: Can I mix MAX4238ASA-T and MAX4238ASA+T in the same production batch?

A: Yes. Since all electrical and mechanical parameters are identical, both parts can be used interchangeably within the same design and assembly process without functional or compatibility issues.