EL8401ISZ Equivalent & Substitute Parts

Part Overview

The EL8401ISZ is a general-purpose operational amplifier manufactured by Renesas Electronics Corporation, featuring four independent circuits in a 14-SOIC surface-mount package. This device is classified as obsolete, indicating discontinued production and limited availability for new designs. The EL8401ISZ operates across a 3V to 5V supply range with rail-to-rail output capability, making it suitable for low-voltage analog signal processing applications.

Due to its obsolete status, identifying functionally equivalent substitute components is necessary for design continuity, production support, and long-term component sourcing. Substitute parts must maintain compatibility across electrical performance parameters, package form factor, and operational specifications to ensure direct replacement capability.

Substiute Parts

EL8401ISZ

Renesas Electronics CorporationIn Stock: 24944EL8401ISZ Datasheet

Current PartRFQ

OPA4354AID

Texas InstrumentsIn Stock: 1530OPA4354AID Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the EL8401ISZ is determined by strict alignment across the following critical parameters:

Package Compatibility: The substitute part must use the 14-SOIC (0.154", 3.90mm Width) surface-mount package to ensure PCB layout compatibility and assembly process continuity.

Circuit Configuration: The substitute must contain exactly four independent amplifier circuits to maintain functional equivalence in multi-channel applications.

Output Architecture: Rail-to-rail output capability is required to preserve signal swing characteristics across the specified supply voltage range.

Supply Voltage Range: The substitute must operate within or encompass the 3V to 5V supply span. Substitutes with extended supply ranges (such as 2.5V to 5.5V) remain compatible as they include the original operating window.

Electrical Performance: The substitute must demonstrate comparable gain-bandwidth product, slew rate, and output current specifications to ensure functional performance in existing circuit designs.

Compliance & Status: The substitute part must maintain ROHS3 compliance and preferably possess an active product status to ensure long-term availability and manufacturing support.

The OPA4354AID from Texas Instruments satisfies all substitution criteria and is classified as an active product with extended availability.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: The OPA4354AID is the qualified substitute for the EL8401ISZ based on matching package geometry, circuit count, output architecture, and gain-bandwidth product specification.

Availability Advantage: The OPA4354AID maintains active product status with Texas Instruments, ensuring continued manufacturing support, documented availability, and supply chain reliability. The EL8401ISZ, classified as obsolete, presents sourcing constraints for new production and long-term support.

Compliance Alignment: Both components maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for electronic component procurement.

Extended Operating Range: The OPA4354AID provides an extended supply voltage range (2.5V to 5.5V) and operating temperature range (-40°C to 125°C) compared to the EL8401ISZ, offering design flexibility for applications requiring broader environmental specifications.

Performance Trade-offs: The OPA4354AID exhibits higher output current capability (100 mA versus 65 mA per channel) and lower input bias current (3 pA versus 1.6 µA), beneficial for precision and high-current applications. The EL8401ISZ maintains a higher slew rate (200 V/µs versus 150 V/µs), which may be critical for high-speed signal processing requirements.

Supply Current Consideration: The OPA4354AID draws increased supply current (4.9 mA versus 2 mA across four channels), requiring power budget evaluation in battery-powered or low-power applications.

Frequently Asked Questions (FAQ)

Q: Can the OPA4354AID directly replace the EL8401ISZ without PCB modifications?

A: Yes. Both components use identical 14-SOIC package geometry with matching pin assignments for four-circuit operational amplifier configurations. Direct PCB substitution is possible without layout changes.

Q: What are the primary electrical differences between these parts?

A: The OPA4354AID features lower input bias current (3 pA versus 1.6 µA), higher output current per channel (100 mA versus 65 mA), and extended supply voltage range (2.5V to 5.5V versus 3V to 5V). The EL8401ISZ maintains higher slew rate (200 V/µs versus 150 V/µs). Both share identical gain-bandwidth product (100 MHz) and rail-to-rail output capability.

Q: Is the OPA4354AID suitable for low-power applications?

A: The OPA4354AID draws 4.9 mA total supply current across four channels, compared to 2 mA for the EL8401ISZ. Applications with strict power consumption limits should evaluate this increased current draw against performance requirements.

Q: Does the OPA4354AID support the same supply voltage range as the EL8401ISZ?

A: The OPA4354AID supports an extended range (2.5V to 5.5V) that fully encompasses the EL8401ISZ operating window (3V to 5V). Designs operating within the original 3V to 5V range experience no compatibility issues.

Q: What is the significance of the obsolete status for the EL8401ISZ?

A: Obsolete classification indicates discontinued production by Renesas Electronics Corporation. This status restricts component availability to existing inventory and secondary market sources, creating supply chain risk for new production runs and long-term product support.

Q: Are both components RoHS compliant?

A: Yes. Both the EL8401ISZ and OPA4354AID maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements for electronic component procurement.

Q: Which part is better for high-speed signal processing?

A: The EL8401ISZ provides higher slew rate (200 V/µs versus 150 V/µs), making it preferable for applications requiring rapid signal transitions. The OPA4354AID remains suitable for most general-purpose applications within the 100 MHz gain-bandwidth specification.

Q: Can I use the OPA4354AID in applications originally designed for the EL8401ISZ?

A: Yes, provided the application does not depend on the specific slew rate advantage of the EL8401ISZ or require operation below 2.5V supply voltage. The OPA4354AID's higher output current and lower input bias current often provide performance improvements in precision and high-current applications.