MAX427EPA Equivalent & Substitute Parts

Part Overview

The MAX427EPA is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, packaged in 8-PDIP through-hole configuration. This device is classified as obsolete, indicating discontinued production and limited availability. The MAX427EPA contains a single amplifier circuit designed for general-purpose applications with moderate performance characteristics. Due to its obsolete status, identifying functionally compatible substitute parts is necessary for ongoing system support, design updates, and procurement continuity.

Substiute Parts

MAX427EPA

Analog Devices Inc./Maxim IntegratedIn Stock: 918MAX427EPA Datasheet

Current PartRFQ

AD847JNZ

Analog Devices Inc.In Stock: 3508AD847JNZ Datasheet

MFR RecommendedRFQ

AD848JNZ

Analog Devices Inc.In Stock: 1954AD848JNZ Datasheet

MFR RecommendedRFQ

OP07CPZ

Analog Devices Inc.In Stock: 17398OP07CPZ Datasheet

MFR RecommendedRFQ

OP07EPZ

Analog Devices Inc.In Stock: 1422OP07EPZ Datasheet

MFR RecommendedRFQ

OP27EPZ

Analog Devices Inc.In Stock: 2211OP27EPZ Datasheet

MFR RecommendedRFQ

OP27GPZ

Analog Devices Inc.In Stock: 17481OP27GPZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the MAX427EPA is determined by the following critical parameters:

Package Compatibility: All substitute parts must use 8-DIP (0.300", 7.62mm) through-hole packaging to ensure direct PCB footprint compatibility without layout modifications.

Electrical Performance Envelope: Substitute parts must operate within the functional range defined by slew rate, gain bandwidth product, input bias current, and input offset voltage. Parts with significantly higher performance specifications remain functionally compatible if they do not introduce signal integrity issues in the application circuit.

Operating Temperature Range: The MAX427EPA operates from -40°C to 85°C. Substitute parts with narrower temperature ranges (0°C to 70°C) are suitable for applications operating within that reduced range.

Supply Voltage Compatibility: The MAX427EPA operates with supply voltages within the range supported by substitute parts. Parts with wider supply voltage specifications provide greater design flexibility.

Compliance Status: Active product status and RoHS3 compliance of substitute parts indicate current manufacturing availability and regulatory alignment with modern procurement standards.

The following substitute parts meet these criteria through direct parameter alignment within the 8-DIP package family.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: OP27EPZ

The OP27EPZ provides the closest electrical performance match to the MAX427EPA. Both devices share identical slew rate (2.8 V/µs) and gain bandwidth product (8 MHz) specifications. The OP27EPZ maintains input bias current at 10 nA and input offset voltage at 10 µV, representing minimal deviation from the original part. The OP27EPZ is active product status with ROHS3 compliance, ensuring current manufacturing availability and regulatory alignment. Operating temperature range is 0°C to 70°C, suitable for applications not requiring the full -40°C to 85°C range of the original part. Supply voltage range of 8 V to 36 V accommodates most general-purpose amplifier applications.

Secondary Substitute: OP27GPZ

The OP27GPZ offers identical electrical performance to the MAX427EPA with matching slew rate (2.8 V/µs) and gain bandwidth product (8 MHz). Input bias current is 15 nA and input offset voltage is 30 µV, representing acceptable variance for general-purpose applications. The OP27GPZ maintains the full operating temperature range of -40°C to 85°C, matching the original part's thermal specifications. Active product status and ROHS3 compliance ensure procurement continuity. This part is preferred for applications requiring extended temperature operation.

Alternative Substitute: OP07CPZ

The OP07CPZ is suitable for applications where lower input bias current (1.8 nA) and lower input offset voltage (60 µV) are beneficial. Slew rate is reduced to 0.3 V/µs, appropriate for low-frequency signal conditioning applications. Operating temperature range of -40°C to 85°C matches the original part. Supply voltage range of 6 V to 36 V provides flexibility for lower-voltage designs. Active product status and ROHS3 compliance support modern procurement requirements.

Alternative Substitute: OP07EPZ

The OP07EPZ provides low input bias current (1.2 nA) and low input offset voltage (30 µV) with slew rate of 0.3 V/µs. Operating temperature range is 0°C to 70°C. This part is suitable for precision low-frequency applications within the reduced temperature range. Active product status and ROHS3 compliance ensure availability.

High-Performance Alternatives: AD847JNZ and AD848JNZ

The AD847JNZ and AD848JNZ represent higher-performance alternatives with significantly elevated slew rates (300 V/µs) and gain bandwidth products (50 MHz and 175 MHz respectively). These parts are suitable for applications requiring faster signal response and wider bandwidth. Input bias current increases to 3.3 µA and input offset voltage ranges from 200 µV to 500 µV. Operating temperature range is 0°C to 70°C. Supply voltage range of 9 V to 36 V is narrower than lower-performance alternatives. These parts are active product status with ROHS3 compliance.

Compliance Consideration:

All substitute parts listed are ROHS3 compliant, addressing regulatory requirements for new designs and procurement. The original MAX427EPA is RoHS non-compliant, making substitution necessary for applications subject to RoHS regulations.

Frequently Asked Questions (FAQ)

Q: Can the OP27EPZ directly replace the MAX427EPA without circuit modifications?

A: The OP27EPZ shares identical 8-DIP package configuration and pin assignment with the MAX427EPA, enabling direct PCB footprint compatibility. Electrical performance parameters (slew rate 2.8 V/µs, gain bandwidth product 8 MHz, input bias current 10 nA) are closely matched. Operating temperature range is reduced to 0°C to 70°C. No circuit modifications are required for applications operating within this temperature range and supply voltage specifications of 8 V to 36 V.

Q: What is the primary difference between OP27EPZ and OP27GPZ?

A: Both parts share identical electrical performance specifications (slew rate 2.8 V/µs, gain bandwidth product 8 MHz). The primary difference is operating temperature range: OP27EPZ operates 0°C to 70°C, while OP27GPZ operates -40°C to 85°C. Select OP27GPZ for applications requiring extended temperature operation matching the original MAX427EPA specification.

Q: Why are AD847JNZ and AD848JNZ listed as alternatives despite higher performance specifications?

A: AD847JNZ and AD848JNZ are functionally compatible substitutes within the 8-DIP package family. Higher slew rate (300 V/µs) and gain bandwidth product (50 MHz for AD847JNZ, 175 MHz for AD848JNZ) do not prevent substitution in applications designed for lower-performance devices. These parts are suitable for applications where enhanced performance is beneficial or where future performance upgrades are anticipated. Operating temperature range is 0°C to 70°C and supply voltage minimum is 9 V.

Q: What is the significance of RoHS3 compliance for substitute parts?

A: RoHS3 compliance indicates conformance to current environmental and regulatory standards for electronic components. All listed substitute parts are ROHS3 compliant, while the original MAX427EPA is RoHS non-compliant. For new designs and procurement subject to RoHS regulations, substitute parts provide regulatory alignment. Existing designs using the MAX427EPA may continue operation without modification, but new procurement should transition to compliant alternatives.

Q: Can OP07CPZ or OP07EPZ be used in applications requiring the full -40°C to 85°C temperature range?

A: OP07CPZ operates -40°C to 85°C and is suitable for extended temperature applications. OP07EPZ operates 0°C to 70°C and is not suitable for applications requiring temperatures below 0°C or above 70°C. Select OP07CPZ for full temperature range compatibility with the original MAX427EPA specification.

Q: What supply voltage range should be verified when selecting a substitute part?

A: The original MAX427EPA supply voltage range is not specified in available documentation. Substitute parts specify minimum supply voltages ranging from 6 V (OP07CPZ, OP07EPZ) to 9 V (AD847JNZ, AD848JNZ), and maximum supply voltage of 36 V across all alternatives. Verify the application circuit supply voltage falls within the selected substitute part's specified range. OP27EPZ and OP27GPZ specify 8 V minimum, accommodating most general-purpose amplifier applications.

Q: Are there pin-compatible alternatives outside the listed substitutes?

A: The substitute parts listed are those explicitly provided in the manufacturer reference data. All listed parts share 8-DIP package configuration with identical pin assignment, ensuring direct PCB compatibility. Additional alternatives may exist from other manufacturers, but selection should be based on equivalent electrical performance parameters and package specifications.